Analysis of data files G22-201 R79_10 and R79_24 - attachments 1-2

Observe HIGH deadtime for FEE64 aida11 (attachment 1) and aida16 (attachment 2) associated with *very* high pause/resume/HEC/disc data item rates.

R79_10

deadtime aida11 99.4%
pause/resume ~ 720Hz
HEC ~ 2800Hz
disc ~ 250kHz


R79_24

deadtime aida16 18.7%
pause/resume ~ 140hZ
HEC ~ 540Hx
disc ~ 50kHz

Offline analysis data file G22-201/R89_0 to R89_13 (c. 6h40m data)

DSSSD#1 & 3 36.54mm -> ~ 2.3-8.6 deg 
DSSSD#2 & 4 64.60mm -> ~ 4.1-10.4 deg 


Beam ~1.06MeV/u 15N5+


Sort program variables https://elog.ph.ed.ac.uk/CARME/240530_180659/variables.dat

ADC data corrected for ADC offset but not gain (assume 0.7keV/LSB)

per DSSSD m_p verus m_n - attachments 1-2

For spectra below events must satisfy condition 0 < m_p < 4 *and* 0 < m_n < 4
 gated w(1)=50 & w(2)=-50
 20keV/channel nominal

per DSSSD p+n junction strip versus n+n Ohmic strip - attachment 3
 note - x/y channel ordering to be checked

per DSSSD E_p versus E_n - attachments 4 & 6
 check whether vertical structures (correct E_n but low E_p) are associated with specific strips or edge of DSSSD?

per DSSSD E_p versus E_n - attachment 5 & 7
 expanded view high energy events 

DSSSD #1 E_p + DSSSD#4  E_p - attachment 8
DSSSD #2 E_p + DSSSD#3  E_p - attachment 8

DSSSD #1 E_p versus DSSSD#4  E_p - attachment 9
DSSSD #2 E_p versus DSSSD#3  E_p - attachment 9
 note clusters of events at asymmetric energies but only for one combination of detectors - random events?


______________________________________________________________________________________________________________________________

               Reaction: 1H(15N,4He)12C

                      A:           1         15          4         12
                      Z:           1          7          2          6
              Mass(amu):    1.007825  15.000109   4.002603  12.000000
             Error(keV):       0.000      0.001      0.001      0.000
                 Origin:
                 Status:

                  Q(gs):    4.9655 +/-   0.0001 MeV

  Projectile lab energy:   15.900 MeV
              CM energy:    1.001 MeV
      Excitation energy:    0.000 MeV
       Reaction Q-value:    4.965 MeV
     Reaction threshold:    0.000 MeV

                 Particle 3                               Particle 4                           Non-relativistic Jacobians
           ( scattered/ejectile )                         ( recoil )                                           Ejectile Ejectile
                                                                                               Ejectile Recoil dOmega/  dOmega/
  Lab    CM       Lab   Lab     Lab    dOmega      Lab    CM       Lab   Lab     Lab    dOmega  dOmega  dOmega Recoil   Recoil
 Angle  Angle   Energy  Beta    ToF    Lab/CM     Angle  Angle   Energy  Beta    ToF    Lab/CM  Lab/CM  Lab/CM dOmega   dOmega
 (deg)  (deg)    (MeV)        (ns/cm)  ratio      (deg)  (deg)    (MeV)        (ns/cm)  ratio                  Lab/Lab  CM/Lab

  0.00 NaN      16.372 0.0934   0.357 NaN          0.00 NaN       4.494 0.0283   1.177 NaN     NaN     NaN     NaN     NaN
  1.00   1.91   16.367 0.0934   0.357  0.2729      1.10 178.09    4.498 0.0284   1.176 -0.3314  0.2729 -0.3314 -0.8233 -3.0175
  2.00   3.83   16.354 0.0934   0.357  0.2730      2.20 176.17    4.512 0.0284   1.174 -0.3290  0.2730 -0.3290 -0.8296 -3.0393
  3.00   5.74   16.331 0.0933   0.358  0.2732      3.29 174.26    4.535 0.0285   1.171 -0.3251  0.2732 -0.3251 -0.8403 -3.0759
  4.00   7.66   16.299 0.0932   0.358  0.2735      4.37 172.34    4.566 0.0286   1.167 -0.3197  0.2735 -0.3197 -0.8553 -3.1277
  5.00   9.57   16.258 0.0931   0.358  0.2739      5.43 170.43    4.607 0.0287   1.162 -0.3129  0.2738 -0.3130 -0.8750 -3.1954
  6.00  11.49   16.208 0.0929   0.359  0.2743      6.47 168.51    4.657 0.0289   1.156 -0.3049  0.2743 -0.3049 -0.8996 -3.2796
  7.00  13.40   16.150 0.0928   0.360  0.2749      7.49 166.60    4.716 0.0290   1.149 -0.2957  0.2749 -0.2957 -0.9294 -3.3815
  8.00  15.31   16.082 0.0926   0.360  0.2755      8.48 164.69    4.784 0.0292   1.141 -0.2855  0.2755 -0.2855 -0.9648 -3.5023
  9.00  17.23   16.006 0.0924   0.361  0.2762      9.45 162.77    4.860 0.0295   1.132 -0.2745  0.2762 -0.2745 -1.0063 -3.6434
 10.00  19.14   15.921 0.0921   0.362  0.2770     10.38 160.86    4.945 0.0297   1.122 -0.2627  0.2770 -0.2627 -1.0545 -3.8067
 11.00  21.05   15.827 0.0918   0.363  0.2779     11.27 158.95    5.039 0.0300   1.111 -0.2503  0.2779 -0.2503 -1.1100 -3.9944
 12.00  22.96   15.725 0.0916   0.364  0.2789     12.13 157.04    5.141 0.0303   1.100 -0.2376  0.2789 -0.2376 -1.1738 -4.2091
 13.00  24.87   15.614 0.0912   0.366  0.2800     12.96 155.13    5.251 0.0306   1.089 -0.2245  0.2800 -0.2245 -1.2469 -4.4539
 14.00  26.78   15.496 0.0909   0.367  0.2812     13.74 153.22    5.370 0.0310   1.077 -0.2113  0.2811 -0.2113 -1.3305 -4.7326
 15.00  28.69   15.369 0.0905   0.369  0.2824     14.49 151.31    5.496 0.0313   1.064 -0.1980  0.2824 -0.1980 -1.4260 -5.0496

______________________________________________________________________________________________________________________________

 Options available:
    (r)eaction   e(x)citation energy   (e)nergy   (a)ngles   (p)rint   (q)uit

 Enter option: x

 Enter excitation energy (MeV): 4.44

 Enter projectile lab energy (MeV): /

 Enter lab scattering angles [start,stop,step] (deg): /

______________________________________________________________________________________________________________________________

               Reaction: 1H(15N,4He)12C

                      A:           1         15          4         12
                      Z:           1          7          2          6
              Mass(amu):    1.007825  15.000109   4.002603  12.000000
             Error(keV):       0.000      0.001      0.001      0.000
                 Origin:
                 Status:

                  Q(gs):    4.9655 +/-   0.0001 MeV

  Projectile lab energy:   15.900 MeV
              CM energy:    1.001 MeV
      Excitation energy:    4.440 MeV
       Reaction Q-value:    0.525 MeV
     Reaction threshold:    0.000 MeV

                 Particle 3                               Particle 4                           Non-relativistic Jacobians
           ( scattered/ejectile )                         ( recoil )                                           Ejectile Ejectile
                                                                                               Ejectile Recoil dOmega/  dOmega/
  Lab    CM       Lab   Lab     Lab    dOmega      Lab    CM       Lab   Lab     Lab    dOmega  dOmega  dOmega Recoil   Recoil
 Angle  Angle   Energy  Beta    ToF    Lab/CM     Angle  Angle   Energy  Beta    ToF    Lab/CM  Lab/CM  Lab/CM dOmega   dOmega
 (deg)  (deg)    (MeV)        (ns/cm)  ratio      (deg)  (deg)    (MeV)        (ns/cm)  ratio                  Lab/Lab  CM/Lab

  0.00   0.00    9.002 0.0694   0.481  0.0000      0.00 180.00    7.423 0.0364   0.916  0.0000  0.0000  0.0000 NaN     NaN
       180.00    0.740 0.0199   1.675  0.0000      0.00   0.00   15.686 0.0529   0.630  0.0000  0.0000  0.0000 NaN     NaN
  1.00   2.81    8.997 0.0693   0.481  0.1270      0.64 177.19    7.428 0.0364   0.915 -0.0513  0.1270 -0.0513 -2.4762 *******
       179.20    0.740 0.0199   1.674  1.5463      0.13   0.80   15.685 0.0529   0.630  0.0243 -1.5463  0.0243 ******* 41.1048
  2.00   5.61    8.983 0.0693   0.481  0.1271      1.27 174.39    7.443 0.0365   0.915 -0.0509  0.1271 -0.0509 -2.4951 *******
       178.39    0.741 0.0199   1.673  1.5414      0.25   1.61   15.684 0.0529   0.630  0.0243 -1.5414  0.0243 ******* 41.1102
  3.00   8.42    8.958 0.0692   0.482  0.1271      1.90 171.58    7.468 0.0365   0.913 -0.0503  0.1271 -0.0503 -2.5269 *******
       177.58    0.743 0.0200   1.671  1.5334      0.38   2.42   15.682 0.0529   0.630  0.0243 -1.5334  0.0243 ******* 41.1194
  4.00  11.24    8.923 0.0691   0.483  0.1271      2.52 168.76    7.502 0.0366   0.911 -0.0494  0.1271 -0.0494 -2.5722 *******
       176.77    0.746 0.0200   1.668  1.5221      0.50   3.23   15.679 0.0529   0.630  0.0243 -1.5221  0.0243 ******* 41.1323
  5.00  14.05    8.879 0.0689   0.484  0.1272      3.13 165.95    7.547 0.0367   0.908 -0.0483  0.1272 -0.0483 -2.6319 *******
       175.96    0.750 0.0201   1.663  1.5077      0.63   4.04   15.676 0.0529   0.631  0.0243 -1.5077  0.0243 ******* 41.1490
  6.00  16.88    8.824 0.0687   0.486  0.1273      3.73 163.12    7.601 0.0369   0.905 -0.0470  0.1273 -0.0470 -2.7072 *******
       175.13    0.754 0.0201   1.658  1.4901      0.76   4.87   15.671 0.0529   0.631  0.0243 -1.4901  0.0243 ******* 41.1697
  7.00  19.71    8.760 0.0684   0.487  0.1273      4.32 160.29    7.665 0.0370   0.901 -0.0455  0.1273 -0.0455 -2.7995 *******
       174.30    0.760 0.0202   1.652  1.4695      0.89   5.70   15.665 0.0529   0.631  0.0243 -1.4695  0.0243 ******* 41.1945
  8.00  22.55    8.686 0.0681   0.490  0.1274      4.89 157.45    7.739 0.0372   0.897 -0.0438  0.1274 -0.0438 -2.9108 *******
       173.46    0.766 0.0203   1.645  1.4458      1.02   6.54   15.659 0.0529   0.631  0.0243 -1.4458  0.0243 ******* 41.2236
  9.00  25.41    8.603 0.0678   0.492  0.1275      5.44 154.59    7.823 0.0374   0.892 -0.0419  0.1275 -0.0419 -3.0436 *******
       172.61    0.774 0.0204   1.637  1.4191      1.15   7.39   15.652 0.0529   0.631  0.0242 -1.4192  0.0242 ******* 41.2573
 10.00  28.27    8.509 0.0674   0.495  0.1276      5.97 151.73    7.916 0.0376   0.887 -0.0399  0.1276 -0.0399 -3.2011 *******
       171.75    0.782 0.0205   1.628  1.3896      1.28   8.25   15.643 0.0528   0.631  0.0242 -1.3896  0.0242 ******* 41.2958
 11.00  31.15    8.407 0.0670   0.498  0.1277      6.48 148.85    8.019 0.0379   0.881 -0.0377  0.1277 -0.0377 -3.3875 *******
       170.87    0.792 0.0206   1.619  1.3572      1.42   9.13   15.634 0.0528   0.631  0.0242 -1.3572  0.0242 ******* 41.3394
 12.00  34.05    8.294 0.0666   0.501  0.1278      6.97 145.95    8.131 0.0381   0.875 -0.0354  0.1278 -0.0354 -3.6080 *******
       169.97    0.803 0.0207   1.608  1.3221      1.56  10.03   15.623 0.0528   0.632  0.0242 -1.3221  0.0242 ******* 41.3886
 13.00  36.96    8.172 0.0661   0.505  0.1279      7.43 143.04    8.253 0.0384   0.868 -0.0330  0.1279 -0.0330 -3.8695 *******
       169.06    0.815 0.0209   1.596  1.2843      1.70  10.94   15.611 0.0528   0.632  0.0241 -1.2844  0.0241 ******* 41.4437
 14.00  39.90    8.040 0.0656   0.509  0.1280      7.87 140.10    8.385 0.0387   0.862 -0.0306  0.1280 -0.0306 -4.1814 *******
       168.13    0.828 0.0211   1.583  1.2440      1.84  11.87   15.598 0.0528   0.632  0.0241 -1.2441  0.0241 ******* 41.5053
 15.00  42.86    7.899 0.0650   0.513  0.1280      8.28 137.14    8.526 0.0390   0.855 -0.0281  0.1280 -0.0281 -4.5560 *******
       167.17    0.843 0.0213   1.569  1.2012      1.99  12.83   15.583 0.0527   0.632  0.0241 -1.2013  0.0241 ******* 41.5741

______________________________________________________________________________________________________________________________


Assume alphas of coincident events detected at 5 deg lab

1H(15N,4He)12C(gs)    E_alpha + E_12C = 16.528+4.607MeV = 20.865MeV - 0.9MeV 12C energy loss dead layer = 19.965MeV = ch 998


1H(15N,4He)12C(4.44)    forward CM E_alpha + E_12C = 0.750+15.676MeV = 16.426MeV - 0.8MeV 12C energy loss dead layer = 15.626MeV = ch 781
1H(15N,4He)12C(4.44)   backward CM E_alpha + E_12C = 8.879+7.547MeV = 16.426MeV - 0.9MeV 12C energy loss dead layer = 15.526MeV = ch 776

DSSD off

FEEs off

Motors out, pin inserted, compressed air closed, power removed from motors box.

Motors and temperature logs are in carme-gsi:logs/G22-200

Next experiment will install new setup attached to gas target. Some baking and vacuum operations required. Everything should stay off for safety until they are done.

Run 101: no target. See ELOG entry by TD.

Run 102: ??

Run 103: ??

Run 104: After experiment time is over, Gleb tests beam lifetime at "high energies". Some data acquired for 30 minutes.

Run 105: Quick pulser walkthrough. People are working near CARME. Positive polarity 1000-9000 amplitude.

10:21 June 17

New energy: 1.125 MeV/u

Target in. Run 98 started.

Run 99 overlap check.

Run 100 back to acquisition as run 98.

Run 96 - as run 89, while we wait for beam energy change at higher energies

Run stopped around 08:56 June 17

Run 97 - target out, beam optimisation for higher energies.

23.18 DSSSD bias & leakage current OK - attachment 1
      FEE64 temps OK - attachment 2
      ADC data item stats attachment 3
       aida01-aida04 c. 250k
      per FEE64 1.8.W spectra - 20us FSR - attachments 4-5
       large transients aida01-aida04
      per FEE64 Rate spectra - attachment 6
      Merger, TapeServer etc. - attachments 7-8
        data file R101_15
      DSSSD energy spectra (updating) - attachment 9
      DSSSD bias & leakage current log - attachment 10
        transients bottom & top left c. 02:00 18.6.24


      cycle slow comparator 0x32 -> 0x64 -> Check ASIC Control -> 0x32
        aida01 - aida04 rates return to normal

      ADC data item stats - attachment 11
      DSSSD energy spectra - attachment 12

23.40 cycle slow comparator 0x32 -> 0x64 -> Check ASIC Control -> 0x32
        aida01 - aida04 rates return to normal


00.10 cycle slow comparator 0x32 -> 0x64 -> Check ASIC Control -> 0x32
        aida01 - aida04 rates return to normal

01.43 ADC item stats OK - attachment 13
       FEE64 temps OK - attachment 14

04.43 ADC data items stats
       ADC data item stats - attachment 15
       FEE64 temps OK - attachment 16
       cycle slow comparator 0x32 -> 0x64 -> Check ASIC Control -> 0x32
        aida01 - aida04 rates return to normal
       ADC data item stats - attachment 17
       per FEE64 Rate spectra - attachment 18
       Merger, TapeServer etc. - attachment 19
        data file R101_51

07.00 FEE64 temps OK - attachment 21
      ADC data items OK - attachment 20
      Merger, Tape Server OK - attachment 22

      DSSSD bias & leakage current - attachment 23

      DAQ stop, close data file
      DSSSD bias OFF
      FEE64 power OFF
         

Gzip'ing all uncompressed data files

04:00 17 June

Moved the detectors back to the usual configuration (as per run 89).

Moved target away - background run.

Some issues with run numbers - see attached run name R93, but run 94 is written. See attached. 93 and 95 contain data. 94 does *not* exist.

No obvious differences wrt. target run, except Rutherford.

~ 2:00 17 June

Run 91

Attempted to move the detectors closer to the beam, and move them in sync with the injection.

Found best position was

Right arm: s by 5 mm, r p in (not moving). No benefits from moving. 10 mm + r p in on sync results in beam clipping during injection. 69.55 mm not moving.

Left arm: s by 5 mm, l p in (in sync with motion). Due to the short beam preparation time, only the trigger out was used as per screenshots below. 23.58 -- 67.90 moving.

Saw spike on leakage current for both detectors on the right arm. Unsure if this because they are being moved, or because they were hit with beam. Leakage current recovered.

Run 92 - acquired data as above.

Rutherford locus more clear on left arm detectors. No clear sign of nuclear reactions signals.

00:10

As run 89, detectors moved fully out.

01:20

TL detector noisy. Shook it. Fixed it.

Temps OK. Noise spike reported in Run 89 still there.

Target 6E11. Beam stable.

02:00

TL detector noisy. Shook it. Fixed it.

ELOG STOPPED WORKING

17:20

(Run 87 Junk and Run 88 does not exist)

Beam charge state set to 5+. Energy is ~1.06 MeV/u

Cooler voltage setpoint 590.3 V.

FC20 read value 589.07 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 3.5 mm (new overlap position with new beam)

vertical beam position  0.0 mm

Beam intensity 7.0e+6 particles.

Target density ~5e11 at/cm2

Beam is stored in the ring for ~20 seconds. From beam overlap tests ~ 75% of the beam is destroyed in this time.

Beam halo appears slightly reduced. This may be due to reduced intensity and reduced injection rate (20 s vs 5s previously)

18:00

FEE64 temperatures OK

ADC data item stats OK

per FEE64 Rate spectra OK

Beam intensity 1.17e+7 particles

Target density ~5.25E11 atoms/cm2

20:28

FEE64 temperatures OK

ADC data item stats OK

per FEE64 Rate spectra OK

Beam intensity 1.08e+7 particles

Target density ~3.84E11 atoms/cm2

23:58

Temps OK. Stats OK. Merger OK. Write to disk OK.

Waveforms attached.

Beam keeps going away due to "solenoid" issues.

On-line analysis screenshots attached.

Without beam, we see a clear noise spike in all detectors every 50-200 seconds randomly. This is *not* correlated with beam injection or dump.

Checkloaded - no effect. Beam back - no changes.

07:00

We are changing to 5+ beam so that we can access higher energies and possibly observe a higher lying, wider resonance.

Beam energy change to 1.06 MeV/u.

Detectors out

Target nozzle out

Pressure in E1 had reached 2e-1 mbar and turbo was spinning down to 810 Hz. Pressure reduced and E1 has reduced to 8.2e-2 mbar. We may require a pressure increase when we want the target back?

Run changed and out into no storage mode so we do not write rubbish to disk.

11:34

Beam tuning in the ring in progress

Merger OK. Not writing to disk.

Temps OK. Rates OK.

Leakage current OK.

Motors out. Target out.

13:31

Checks OK. Beam tuning near completion.

Some data acquired during beam tuning attached.

06:50

No sign of the resonance during night shift. New run started but when operators are avaiable we will likely move to higher energies to try and observe the (p,a) reaction.

Cooler voltage setpoint 247.8 V.

FC20 read value 247.25 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~5e11 at/cm2

05:00

Cooler voltage setpoint 247.45 V.

FC20 read value 246.9 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~5e11 at/cm2

Target temperature is 38.6 K. Values of E1 is 819 Hz, 2.7A, 1.85e-1 mbar

All checks OK

03:00

Cooler voltage setpoint 247.7 V.

FC20 read value 247.15 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~5e11 at/cm2

Target temperature is 38.6 K. Values of E1 is 820 Hz, 2.7A, 1.8e-1 mbar

All checks OK

03:34

Noise increase in top left dssd. Servo motor moved to resolve issue.

01:00

Cooler voltage setpoint 247.6 V.

FC20 read value 247.05 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~5e11 at/cm2

Target temperature is 38.6 K. Values of E1 is 820 Hz, 2.7A, 1.7e-1 mbar

All checks OK

02:50

Noise increase on dssd top left. Moved servo  motor to resolve issue.

23:38

Cooler voltage setpoint 247.5 V.

FC20 read value 246.95 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~5e11 at/cm2

Target temperature is 38.6 K. Values of E1 is 820 Hz, 2.7A, 1.7e-1 mbar

All checks OK

23:10

Beam set to bunched mode to observe beam lifetime. 

Electron cooler voltage setpoint kept at 246.8 V. Note this is 0.5 V lower than the previous test where the setpoint was 247.3 V

This corresponds to ~13.5 keV in the beam energy.

Attachment 1 shows target scan. Maximum still observed at a horizontal beam position of 1.0 mm.

Moving 0.5 V up or down does not impact the orbit enough to shift the beam position off the target.

Beam lifetime off target seems larger than previous, perhaps better vacuum conditions?

Back to coasting beam

20:00

Ecooler setpoint 246.8

Readout 246.25

Collector current 4.3

Target density ~5.3E11

Beam intensity 7E7 ions

14:51

Ecooler setpoint 246.9

Readout 246.35

Collector current 4.3

Target density 4.6E11

Beam intensity 8E7 ions

Shook left arm to fix it.

15:32

Right half on BL detector was not counting. Checkloaded. Fixed.

17:20

Moved left arm out/in to fix it.

Reduced temperature to 38.5 K in steps as the target density was declining.

E1: pressure: 1.57E-1 mbar, turbo frequency: 819  Hz

Target density: 1.5E11 atoms/cm2; Ion beam intensity: 6E7 particles (went down slightly, have not been able to get everything back)

DSSSD bias & leakage current OK 
FEE64 temperatures OK 
ADC data item stats OK 
per FEE64 Rate spectra OK 

19:50

E1: pressure: 1.61E-1 mbar, turbo frequency: 819  Hz

Target density: 1.5E11 atoms/cm2; Ion beam intensity: 7E7 particles (recovered slightly)

DSSSD bias & leakage current OK 
FEE64 temperatures OK 
ADC data item stats OK 
per FEE64 Rate spectra OK 

Target clogged?

Run 77 started at 06:48

Cooler voltage setpoint 247.0 V.

07:05

DSSSD bias & leakage current OK - attachments 1 & 2

FEE64 temperatures OK - attachment 3

ADC data item stats OK - attachment 4

per FEE64 Rate spectra OK - attachment 5

Beam intensity 8.45e+7 particles

Target density ~5.34E11 atoms/cm2

09:02

DSSSD bias & leakage current OK - attachments 6 & 7

FEE64 temperatures OK - attachment 8

ADC data item stats OK - attachment 9

per FEE64 Rate spectra OK - attachment 10

Beam intensity 7.85e+7 particles

Target density ~5.29E11 atoms/cm2

11:00

DSSSD bias & leakage current OK - attachments 11 & 12

FEE64 temperatures OK - attachment 13

ADC data item stats OK - attachment 14

per FEE64 Rate spectra OK - attachment 15

Beam intensity 8.5e+7 particles

Target density ~6.1E11 atoms/cm2

13:00

DSSSD bias & leakage current OK - attachments 16 & 17

FEE64 temperatures OK - attachment 18

ADC data item stats OK - attachment 19

per FEE64 Rate spectra OK - attachment 20

Beam intensity 8.2e+7 particles

Target density ~6.1E11 atoms/cm2

22:15

New run 76 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.1 V.

FC20 read value 246.55 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 7.5e+7 particles.

Target density ~6.2e11 at/cm2

Target temperature is 38.5 K. Values of E1 is 820 Hz, 2.6A, 1.85e-1 mbar

00:15

System and detector check is OK. E1 pressure is increasing slowly. target 4e+11/cm2

02:15

System and detector check is OK. E1 pressure is increasing slowly. P=2,2e-1 mbar Pump frequency is 807 Hz, 2.7A. Target 5e+11/cm2

03:15

System and detector check is OK. E1 pressure reaches 2,3e-1 mbar, thus flow is decrease a bit. Pump frequency is 800 Hz, 2.8A. Target 6e+11/cm2

04:15

System and detector check is OK. E1 pressure is stabilized. New values: 2.07e-1 mbar, 810 Hz, 2.8 A. Target 5e+11/cm2. Resonance peak not so visible- see attachment 1.

05:43

System and detector check is OK. E1 pressure is slowly increasing. New values: 2.13e-1 mbar, 807 Hz, 2.8 A. Target 5e+11/cm2. Beam intensity stable at 7e+7 particles.

14:30

New run 75 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.2 V.

FC20 read value 246.65 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 8.5e+7 particles.

Target density ~6e11 at/cm2

Target temperature is 36.6 K. Values of E1 is 820 Hz, 2.6A, 1.4e-1 mbar

16:00

Beam intensity 8.5e+7 particles.

Target density ~4e11 at/cm2

Target temperature is 36.6 K. Values of E1 is 820 Hz, 2.6A, 1.68e-1 mbar

DSSSD bias & leakage current OK - attachment 1

FEE64 temperatures OK - attachment 2

ADC data item stats OK - attachment 3

16:58

Pressure on E1 has risen to 1.74e-1 mbar. Target density ~4.5e11 at/cm2.

Turbo is decreased to 818-819 Hz. We will increase temperature sligtly to see if this helps.

17:11

Increase in noise on top left DSSD. Correlates with spike in the source seen on lassie. Moved servo motor out then in. Problem resolved. 

System checks OK

18:35

Tempature has been increase in small steps to 38.4 K. E1 appears to have stabalised at 1.71e-1 mbar. Turbo speed 818-819 Hz. 

Target density ~5.5e11 at/cm2. We will wait to see how it evolves over time.

18:47

Increase in noise on top left DSSD. Correlates with spike in the source seen on lassie. Moved servo motor out then in. Problem resolved. 

20:55

All checks OK

Tempature has been increase in small steps to 38.4 K. E1  1.81e-1 mbar. Turbo speed 818-819 Hz. 

21:48

System checks OK

22:14

Run stopped

7:00

Cooler voltage setpoint 247.4 V.

7:44

E1 Turbo at 808 Hz, 2.75 A

DSSSD bias & leakage current OK 

FEE64 temperatures OK 

ADC data item stats OK 

per FEE64 Rate spectra OK 

Beam intensity 7.5e+7 particles

Target density ~3E10 atoms/cm2

8:30

E1 pressure was too high (2.13E-1 mbar) and turbo frequency too low (807 Hz).

We increased T1 in steps of 0.2 K to 39.6 K, which improved in E1 (2E-1 mbar) and turbo freq. (813 Hz).

T1 was decreased again to 39.4 K.

After speaking to Nikos we slightly decreased the gas flow (~15 bar) as desribed in elog entry 631.

Values now: turbo (817 Hz), E1 pressure (1.78E-1 mbar) -> both improved

10:06

The gas flow was decreased in three steps, there is now change visible on the gauge (still ~15 bar).

The turbo frequency ist stable at 819 Hz and pressure at E1 is 1.45E-1 mbar.

The temperature is currently at 39.0 K and we will start decreasing it to try and bring the target density up.

DSSSD bias & leakage current

OK FEE64 temperatures OK

ADC data item stats OK

per FEE64 Rate spectra OK

Beam intensity 7.5e+7 particles

Target density ~2E10 atoms/cm2

11:50

All system checks OK

Target density is ~3e11 at/cm2.

Temoerature of the nozzle is curretnly 37.5K with E1=1.6e-1 mbar. Turbo running at 820 Hz

14:29

Run stopped

CRYRING hall temperature transient - evening of Friday 14 June

Cooling of recirculating water failed on a number of circuits within the GSI experimental hall including S4 and CRYRING
Subsequently repaired bu on-call maintenance engineer

Beam is back.New run started.

Cooler voltage setpoint 247.3 V.

23:18

DSSSD bias & leakage current OK 

FEE64 temperatures OK 

ADC data item stats OK 

per FEE64 Rate spectra OK 

Beam intensity 6e+7 particles

Target density ~4E10 atoms/cm2

01:01

DSSSD bias & leakage current OK - attachment 1 & 5

FEE64 temperatures OK - attachment 2

ADC data item stats OK - attachment 3

per FEE64 Rate spectra OK - attachment 4

Beam intensity 7e+7 particles

Target density ~5E11 atoms/cm2

03:03

DSSSD bias & leakage current OK - attachment 6 & 7

FEE64 temperatures OK - attachment 8

ADC data item stats OK - attachment 9

per FEE64 Rate spectra OK - attachment 10

Beam intensity 7e+7 particles

Target density ~4E11 atoms/cm2

05:00

DSSSD bias & leakage current OK - attachment 11 & 15

FEE64 temperatures OK - attachment 12

ADC data item stats OK - attachment 13

per FEE64 Rate spectra OK - attachment 14

Beam intensity 7.4e+7 particles

Target density ~5E11 atoms/cm2

05:15

Turbo frequency went below 810 Hz. Set temperature increased from 38.8 K to 39.0 K.

06:50

DSSSD bias & leakage current OK - attachment 16 & 17

FEE64 temperatures OK - attachment 18

ADC data item stats OK - attachment 19

per FEE64 Rate spectra OK - attachment 20

Beam intensity 7.5e+7 particles

Target density ~2.3E11 atoms/cm2

21:00

Target is lost. Background run is being collected.

New run 72 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.3 V.

FC20 read value 246.75 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm18:00

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 6e+7 particles.

Target density ~3e9 at/cm2

Target temperature is 90 K. Values of E1 is 820 Hz, 2.6A, 4.2e-2 mbar

Aida03 detector T is stable.SCreenshot is attached.

22:27

Cooling fixed. Temps OK.

The orbit of the beam in the ring was re-configured so that the beam position is more central.

With the target density at ~6e11 at/cm2 this allowed a target overlap scan using the beam lifetime to be performed. 

Beam put into bunched mode to allow the number of particles to be observed on Grafana.

The number of particles injected at the start of the cycle was then compared to the number of particles at the end of the cycle to gauge the % of the beam lost.

A flat top region was observed where >99% of the particles in the ring were lost. The centre of this flat top corresponds to a horizontal beam position of 1.0 mm

Attachment 1 - Grafana plot of beam intensity

Attachment 2 - Plot of overlap

ONLY FOLLOW THESE INSTRUCTIONS if E1 turbo is below 820 Hz, pressure in E1 is above 2.5E-1 mbar and experts (Nikos, Andreas) cannot be reached.

Go to the red cabinet under the stairs.

Open rightmost door. See first photo. Do not press the button on the handle or the door will lock!

Turn down pressure regulator indicated in second photo by approximately 1 degree. Read regulator to know which way to turn to decrease. No immediate change should be obvious on the pressure regulator.

Check E1 pressure for 5 minutes. If no effect, turn pressure down again until an effect appears.

15:45

New run 71 - beam on target with definite target overlap [coasting]

Cooler voltage setpoint 247.3 V.

FC20 read value 246.75 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm18:00

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~4e11 at/cm2

Target temperature is 36.6 K. Values of E1 is 820 Hz, 2.6A, 1.4e-1 mbar

16:36

No difference observed between bunched and coasting

See attached screenshots to compare to previous run

Saw an increase in the data rate to disk ~ 2000 kB/s. On spectrum browser we saw aida15 had HEC reading hot. ASIC check on aida 15 resolved issue

18:00

Beam intensity 6e+7 particles.

Target density ~6e11 at/cm2

Target temperature is 36.6 K. Values of E1 is  820 Hz, 2.7 A, 1.5e-1 mbar

Aida03 detector temperature is 66 degree.

20:00

Beam intensity 6e+7 particles.

Target density ~6e11 at/cm2

Target temperature is 36.6 K. Values of E1 is  820 Hz, 2.7 A, 1.6e-1 mbar

Aida03 detector temperature is 63 degree. Screenshot is attached.

21:00

arget densityis dropped drastically. A temperature is ncreased signifiantly.

Beam intensity 6e+7 particles.

Target density ~2.7e9 at/cm2

Target temperature is 9 K. Values of E1 is  820 Hz, 2.7 A, 4.2e-2mbar

Aida03 detector temperature is 63 degree. Screenshot is attached.

14:45

New run 70 - beam on target with definite target overlap

Cooler voltage setpoint 247.3 V.

FC20 read value 246.75 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

FakeMotion script running

horizontal beam position 1.0 mm (new beam target overlap)

vertical beam position  -5mm

Beam intensity 7.0e+7 particles.

Target density ~6.3e11 at/cm2

Target temperature is 36.6 K. Values of E1 is 820 Hz, 2.6A, 1.4e-1 mbar

All system checks OK, data rate is ~ 260 kB/s. Statistics attached.

xy and energy histograms following ~20 mins attached.

15:45

I realised we have been running in bunched mode not coasting as we have been previously.

See attached screenshots (4-7) of last 1 hour of running. We will move to coasting.

Frank has been tuning the beam since 08:00

detectors moved fully out

11:20

New run (R68) started at 11:20. Put into no storage mode as rates are high during beam tuning. Cut off the end of last nights run when analysing

System checks OK

13.20 DSSSD bias & leakage current OK - attachment 1

FEE64 temperatures OK - attachment 2

ADC data item stats - attachment 3

per FEE64 1.8.W spectra - attachments 4-5

per FEE64 Rate spectra - attachment 6

 aida16 producing HEC data - Chck ASIC load to fix

TapeServer - no storage mode

13.35 aida01-aida04 c. 250k ADC data items/s - will await completion of current beam/target scan to fix by cycing Left DSSSD motion

14.00 CB cycles Left DSSSD motion to fix aida01-aida04 rate issue

CRYRING vacuum & hall temprature - attachments 7-8

14.28 New run data file G22-201/R69

Beam/target overlap optimised - details to follow

Run 67

00:01

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats OK - attachment 3

      per FEE64 Rate spectra OK - attachment 4

           Beam intensity 5.7E7 particles

           Target density - 4.98E11 atoms/cm2

02:01

      DSSSD bias & leakage current OK - attachment 5

      FEE64 temperatures OK - attachment 6

      ADC data item stats OK - attachment 7

      per FEE64 Rate spectra OK - attachment 8

           Beam intensity 5.8E7 particles

           Target density - 4.39E11 atoms/cm2

04:00

      DSSSD bias & leakage current OK - attachment 9

      FEE64 temperatures OK - attachment 10

      ADC data item stats OK - attachment 11

      per FEE64 Rate spectra OK - attachment 12

           Beam intensity 4.1E7 particles

           Target density - 3.57E11 atoms/cm2

06:00

      DSSSD bias & leakage current OK - attachment 13

      FEE64 temperatures OK - attachment 14

      ADC data item stats OK - attachment 15

      per FEE64 Rate spectra OK - attachment 16

           Beam intensity 3.7E7 particles

           Target density - 3.89E11 atoms/cm2

08:00

          The orbit adjustments started. The detectors moved out. One of these showed rates of about 20kHz. but after moving it in and out again it returned to normal.

11:00

      DSSSD bias & leakage current OK - attachment 17

      FEE64 temperatures OK - attachment 18

      ADC data item stats OK - attachment 19

      per FEE64 Rate spectra OK - attachment 20

           Beam intensity 4.9E7 particles

           Target density - 5.27E11 atoms/cm2

22:05

The energy is changed to 247.4 V.

Read back value is 246.849 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

horizontal beam position 8.75 mm

vertical beam position  -5mm

Beam intensity 4.0e+7 particles.

Run is R67. Target temperature is 36..6 K.

Values of E1 is 820 Hz, 2.4A, 8.69e-2 mbar,  2.55e+11/cm2. The pressure is slowly increasing since this afternoon. The recent value is E1 is 820 Hz, 2.4A, 9.0e-2 mbar,  3.28e+11/cm2

Systen checks all OK

Attachments

13.39 DSSSD bias & leakage current OK

FEE64 temps OK

ADC data item stats OK

per FEE64 Rate spectra

Merger, TapeServer et

 data file R65_11

DSSSD bias & leakge current log

CARME DSSSD motion control

15.45 Start data file G22-201/R66 
      Beam/target overlap test

10:47

The energy is changed to 247.4 V.

Read back value is 246.849 V.

Right arm at 64.60 mm

Left arm IN at 36.54 mm

MBS working - hopefully

horizontal beam position 8.75 mm

vertical beam position  -5mm

Beam intensity 3.0e+7 particles.

e-cooler export controls before/after energy change - attachments 1 & 2

New run is R65. Target temperature is 37.6 K.

Values of E1 is 820 Hz, 2.12A, 6.01e-2 mbar,  2.8e+11/cm2

12:34

Systen checks all OK

Target density stable at ~1.5e11 at/cm2

E1 = 6e-2 mbar, turbo is fine

13,38 CB reboots RHS CRYRING control computer (atppc017) - appears to be a now unavoidable system update/reboot

13.39 DSSSD bias & leakage current OK - attachment 3

FEE64 temps OK - attachment 4

ADC data item stats OK - attachment 5

per FEE64 Rate spectra - attachment 6

Merger, TapeServer etc - attachments 7-8

 data file R65_11

DSSSD bias & leakge current log - attachment 12

CARME DSSSD motion control - attachment 13

13.42 E1 turbo 820Hz 2.2A 5.2e-2mbar

Target 3.45e+11/cm2 T1 36.6K

Beam c. 3e+7

15:20

Stats OK. Temps OK.

Merger OK. Write to disk OK.

07.22 E1 pump 799Hz, 2.8A, 2.6e-1 mbar, 4.8e+11/cm2

07.24 DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats OK - attachment 3

      per FEE64 Rate spectra - attachment 4

      per FEE64 1.8.L spectra - attachments 5-6

      per FEE64 1.8.W spectra - 20us FSR - attachments 7-8

      Merger, TapeServer etc - attachments 9-10
       data file G22-201/R64_11

      DSSSD bias & leakage current log - attachment 11

      CRYRING hall temperature log - attachment 12

      CARME DSSSD position controller - attachment 13

07.57 all histograms zero'd


07.58 E1 pump 794Hz, 2.8A, 2.6e-1 mbar, 3.1e+11/cm2
08.55 E1 pump 785Hz, 2.8A, 2.74e-1 mbar, 4.8e+11/cm2. Therefore, the temperature is changed from 38.8 K to 38.4 K. Values of E1 is changed to E1 pump 782Hz, 2.7A, 2.95e-1 mbar, 6e+11/cm2
09.15 The temperature is further changed from 38.4 K to 38.0 K.  
09.25 Values of E1 is changed to E1 pump  780 Hz,  2.79 A,  3.0 e-1 mbar,  5.87 e+11/cm2
09.35 Values of E1 is changed to E1 pump  779 Hz,  2.79 A,  3.1 e-1 mbar,  2.07 e+11/cm2
09.45 Values of E1 is changed to E1 pump  778 Hz,  2.75 A,  3.0 e-1 mbar,  4.6 e+11/cm2
10.00 Values of E1 is changed to E1 pump   776 Hz,   2.78 A,  3.05 e-1 mbar,  5 e+11/cm2

Intervention by Uli. Reduced H2 regulator to c. 12 bar. Briefly opened exhaust to hasten recovery.

10.13 E1 820Hz 2.3A 7.7e-2mbar c. 2e+11/cm2
10.34 E1 820Hz 2.1A 6.2e-2mbar c. 1.2e+11/cm2 38K
      Beam c. 4e+7. Cooler set 247.3V, read 246.751V.

01:50

Right arm at 64.60 mm

Left arm IN at 36.54 mm

MBS working - hopefully

Target ~3E11

Injection ca. 3E7

horizontal beam position 8.75 mm

vertical beam position  -5mm

Changed electron cooler set point to 247.3 V

Read value 246.75 V

Collector current 4.3A

Histograms and statistics zero'd. Code reset

Rates OK. Temps OK.

NOTE. Between 23:45 and 12:45 the electron cooler was off? We called HKR and they turned it back on. Are we using the same cooler settings? Is the cooler still definitely working properly? Ask Claude in the morning

02:30

The target density started to oscillate between 2e+10 and 3.5e+10. However, the pump speed seems to be stable.

03:50

The oscillations seems to deepend between 1e+10 and 6e+10. Additionally the E1 pump slowed down to 815. As Nikos suggested during the tuning, I tried to lower the temperature from 41K to 40.8K.

04:00 - 04:30

No major change was observed, thus I increased the temperature to 42.2K in order to try to get the pump to the nominal rotation. After 10 minutes, the pump slowed down to 810 and the pressure in E1 reached 2.2e-1. Since increasing the temperature seemed to have a negative effect, I slowly decresed the temperature with steps of 0.2 K, until reaching 40K. At this point, the E1 pump returned to 819/820, the pressure of E1 lowered to 1.6e-1 and the target density seems to be more stable with a value of 2.8e+11.

05:00

The target density started decreasing to 1.5e+10 and the pump speed slowed to 815. I've tried to lower the temperature to 39.8K, but the target density started to decrease. Thus I've set the temperature to 40.2K. The pump speed raised to 818 but the target density remaind at 1e+11 level with oscillations between 8.5e+10 and 1.5e+11. After some minutes, it started slowly increasing towards the 2e+11 region. The E1 pumping speed is stable at 818 and the pressure of E1 is 2.02e-1.

05:10

Electron cooler off, restarted 10 minutes after by calling HKK.

05:30

Target density at 1.5e+11, however, the E1 raised to 2.3e-1 and the pump speed decreased to 810. Since going down seemed to solve it, I decreased the temperature to 39.6K. After 5 minutes the E1 lowered to 1.9e-1 and the pump speed is going up (currently at 814). The target density is at the same level of 1.5e+11.

06:00

Again the target density started to go down, as well the speed of the E1 pump and the E1 pressure reached 2.3e-1. I lowered the temperature to 39.2K: the target density raised to approximately 3.8e+11 (and keeps going up), the E1 pressure lowered to 1.9e-1 and the E1 pump speed started increasing from 810 to 815.

06:30

The target density starting going down again, the E1 started increasing to 2.3e-1 and the E1 pump speed decreased to 810. I lowered the temperature to 38.8K, the density raised to 3.5e+11, the E1 pressure lowered to 1.9e-1 and the pumping speed starting increasing.

07:56 Gleb has taken the beam to try settings for the 5+ charge state. As soon as the target is ready, the 1+ charge state will be given back.

Detectors have been moved out for safety

08:10
      Run 63
   
      DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3

      per FEE64 Rate spectra - attachment 4

      
09:55 
      Run 63 

      DSSSD bias & leakage current OK 

      FEE64 temperatures OK  

      ADC data item stats OK

      per FEE64 Rate spectra OK

10:30

Data rate appeared very high c. 2000 kB/s instead of the usual 200 kB/s.

Rate on first two ASICs of aida02 was high (~2 kHz) but rest of aida01-04 looked fine.

ASIC check load reduced rate back to normal levels. Data rate reduced back to 200 kB/sec.

New ADC offsets loaded into the CARME_Sort code

Aida03 appears to be down. Check load does not resolve issue. Moving detector arm does not resolve issue. No spike in leakage current observed. System checks appear OK.  Zeroing ADC data item statistics keeps aida03 at 606023857 items and does not zero.

Issue resolved by resetting the data links for aida03

13:20

DSSSD bias & leakage current OK

FEE64 temperatures OK

ADC data item stats OK

per FEE64 Rate spectra OK

21:30

Waiting for the target.

Beam has been running, we have been running without storage.

See attachment showing beam stripe on the detectors.

Run 63 continued

22.06 DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3

      per FEE64 Rate spectra - attachments 4-5
       aida16 producing HEC data, ASIC check load to clear


23.56 DSSSD bias & leakage current OK - attachment 6

      FEE64 temperatures OK - attachment 7

      ADC data item stats - attachment 8

      per FEE64 Rate spectra - attachments 9

       aida01-aida04 high ADC data item rates - left DSSSD motion cycle required to reset


03.28 DSSSD bias & leakage current OK - attachment 10

      FEE64 temperatures OK - attachment 11

      ADC data item stats - attachment 12

      per FEE64 Rate spectra - attachments 13

       aida01-aida04 high ADC data item rates - left DSSSD motion cycle required to reset


07.50 DSSSD bias & leakage current OK - attachment 14

      FEE64 temperatures OK - attachment 15

      ADC data item stats - attachment 16

      per FEE64 Rate spectra - attachments 17

       aida01-aida04 high ADC data item rates (see above) appears to have resolved itself or has been resolved (but not logged)

21:00

Claude has achieved optimal cooling parameters for the beam

No target and internal work inside the cave tomorrow is required

Run 63 going - beam only background

Right arm at 64.60 mm

Left arm IN at 36.54 mm

MBS fakemotion script running

High rates on top left dssd again. Cycle left servo motor two times resolved issue

Rates OK. Temps OK.

Target has been moved out and H2 switched off. Changed to He.

Nikos will repair nozzle tomorrow morning. Remote checks until then.

Beam optimization and target change

New run 61

Right arm at 64.60 mm

Left arm IN at 36.54 mm

MBS working - hopefully

Target 4E11

Injection ca. 3E7

horizontal beam position 8.75 mm

vertical beam position  -5mm

Changed electron cooler set point to 244.95 V

Read value 244.4 V

Collector current 4.31A

Histograms and statistics zero'd. Code reset

Rates OK. Temps OK.

10:24

We lost the beam for 5 minutes. No counting spike observed when we got it back.

1L10

We lost the beam again for 5 minutes, but no counting spike obsevered when we got it back.

11:50


      DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3

      per FEE64 Rate spectra - attachment 4
      
      Beam intensity - ~ 3.3E7 pps

      Target density - 5.14E11 atoms/cm2

12:00 - 12:40

Large fluctuations in the target pressure, going down to 1e-9. We increased the temperature a little but it did not solve the problem.

Increased pressure 0.5 K more. Seems more stable

13:09

FEEs on det 2 stopped working. Checkloaded. Fixed.

No beam.

05:36

Run started.

Conditions as before, except left servo now really in.

06:24

Run continues OK, file R60_9

Temps OK. Stats OK. Merger OK. Write to disk OK.

System wide checks as usual.

07:30


      DSSSD bias & leakage current OK - attachment 4

      FEE64 temperatures OK - attachment 5

      ADC data item stats - attachment 6

      per FEE64 Rate spectra - attachment 7
      
      Beam intensity - ~ 4.8E7 pps

      Target density - 7.25E11 atoms/cm2
      

9:20


      DSSSD bias & leakage current OK - attachment 8

      FEE64 temperatures OK - attachment 9

      ADC data item stats - attachment 10

      per FEE64 Rate spectra - attachment 11
      
      Beam intensity - ~ 4E7 pps

      Target density - 7E11 atoms/cm2
      

21:32

New run 59

Right arm at 64.60 mm

Left arm IN at 36.54 mm

MBS working - hopefully

Target 4.7E11

Injection ca. 4E7

horizontal beam position 8.75 mm

vertical beam position  -5mm

Changed electron cooler set point to 244.85 V

Read value 244.3 V

Collector current 4.31A

Histograms and statistics zero'd. Code reset

Rates OK. Temps OK.

22:44

Screenshots of the above

23:00

Detector 0 shows usual strong noise. Shook twice. Fixed it. Beam loss in correspondence with this event.

Beam mostly recovered a few minutes later.

23:28

Detector 0 shows noise. Shook twice with servo. No result. Shook with pneumatic. Fixed. Some beam instabilities again.

01:00

Temps OK. Rates OK.

Merger OK. Write to disk OK (file 59_13)

01:36

Detector 0 shows usual strong noise. Shook it. Fixed it.

01:46

Detector 0 shows noise. Shook twice with servo. No result. Shook with pneumatic. Fixed.

The noise increase is definitely correlated with spikes in YRT1DT1MK current reading. Unclear what the reading is.

02:36

Target density has been consistentyl above 1E12 recently, very unstable and trending forward. Increased Lakeshore setpoint by 0.5 K.

Density decreases to high 1E11, and appear significantly more stable. E1 pressure reading also decreasing to 1E-1 mbar.

Temps OK. Stats OK. Merger OK. Write to disk OK.

03:58

Temps OK. Stats OK. Merger OK. Write to disk OK.

Target still unstable and now a bit too low density. Trying to slowly lower the temperature in 0.1 K steps.

04:55

Temps OK. Stats OK. Merger OK. Write to disk OK.

Target around 6E11 atoms/cm2, with Lakeshore temperature at 30.8 K. Waiting for it to stabilise.

05:34

Detector 0 noisy. Shook. Fixed it.

Realised I had not moved the detector back at 01:46 after shaking it. Most of this run has been taken with detector 0 fully out, i.e. 18.86 mm.

Moving in and moving to a new run.

Ion beam energy is calculated using Beamcalc (https://web-docs.gsi.de/~lestinsk/beamcalc/electron.php)

Electron current is set to 4.3 mA and can be taken from Grafana

Alpha factor is 50

Ion energy is then adjusted using the cooler voltage

The cooler voltage inserted into BeamCalc is taken from the FC20 voltage divider. However an offset from the space charge correction is required!

This correction is determined experimentally by changing the electron current and finding the cooler voltage which maintains the optimum cooling of the beam.

Attachment 1 shows this plot for 15N1+ at  ~0.426 MeV/u

Attachment 2 shows this same plot in comparison with BeamCalc

To obtain the correct energy we need to subtract 2V from the voltage used in BeamCalc

An example is shown in attachment 3

Here to obtain an ion energy of 426.6 keV/u requires a cooler voltage of 246.7 V. But, due to the space charge correction this value should be 244.7 V.

The cooler voltage setpoint should therefore be chosen so that the FC20 voltage divider reads 244.7 V.

The setpoint needs to be ~0.55 V higher than the desired value i.e setpoint of 245.25 V to obtain the required 244.7 V (at least this beamtime it does)

15:30

Merger OK, Tape server OK

ADC data item statistics OK

FEE temperatures look OK

System checks OK

20:20

Merger OK, Tape server OK

ADC data item statistics OK

FEE temperatures look OK

System checks OK

13:53

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3

      per FEE64 Rate spectra - attachment 4
      
      Beam intensity - ~ 5.0E7 pps

      Target density - off

08:26: There is no beam and Gleb is informed.

08:46: Beam is back.

06:45 New data file G22-201/R57

      Right arm at 64.60 mm

      Left arm IN at 36.54 mm

      horizontal beam position 8.75 mm

      vertical beam position -5mm
   
      Changed electron cooler set point to 244.4 V

      Read value 243.851 V

      Collector current 4.31A


      DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3

      per FEE64 Rate spectra - attachment 4
      
      Beam intensity - ~ 5.7E7 pps

      Target density - 2.91E11 atoms/cm2

8:35


      DSSSD bias & leakage current OK - attachment 5

      FEE64 temperatures OK - attachment 6

      ADC data item stats - attachment 7

      per FEE64 Rate spectra - attachment 8
      
      Beam intensity - ~ 4.8E7 pps

      Target density - 2.86E11 atoms/cm2
      
      There is no beam since 8:26 and Gleb is informed. 08:46: Beam is back.

10:49


      DSSSD bias & leakage current OK - attachment 9

      FEE64 temperatures OK - attachment 10

      ADC data item stats - attachment 11

      per FEE64 Rate spectra - attachment 12
      
      Beam intensity - ~ 4.0E7 pps

      Target density - 3.66E11 atoms/cm2


13:18


      DSSSD bias & leakage current OK - attachment 13

      FEE64 temperatures OK - attachment 14

      ADC data item stats - attachment 15

      per FEE64 Rate spectra - attachment 16
      
      Beam intensity - ~ 5.0E7 pps

      Target density - 5.67E11 atoms/cm2
      



     

23:15 New run 56 with

      Right arm at 64.60 mm

      Left arm IN at 36.54 mm

      MBS working - hopefully

      Target 4E11

      Injection ca. 4E7

      horizontal beam position 8.75 mm

      vertical beam position  -5mm
   
      Changed electron cooler set point to 244.3 V

      Read value 243.757 V

      Collector current 4.31A

      Rates OK. Temps OK

00.30 DAQ continues file G22-201/R56_9

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3

      per FEE64 Rate spectra - attachment 4

      Merger etc - attachment 5

      DSSSD bias & leakage current log, CRYRING hall ambient temperature log - attachments 6-7

01.30 Photographs of current CRYRING controls - attachments 8-14


01.30 DAQ continues file G22-201/R56_14

      DSSSD bias & leakage current OK - attachment 15

      FEE64 temperatures OK - attachment 16

      ADC data item stats - attachment 17

      per FEE64 Rate spectra
       aida16 asics # 1 & # 2 HEC data - attachment 18
       aida16 ASIC load check x2 restores normal operation - attachment 19

      target 5e+11 stable, beam 4e+7 stable 

02.45 beam off - reported to HKR

      DAQ continues file G22-201/R56_16

03.00 beam back

      beam 4e+7 stable, target 5e+11 stable

      DSSSD bias & leakage current OK - attachment 20

      FEE64 temperatures OK - attachment 21

      ADC data item stats - attachment 22

      per FEE64 Rate spectra - attachment 23


04.20 DAQ continues file G22-201/R56_21

      DSSSD bias & leakage current OK - attachment 24

      FEE64 temperatures OK - attachment 25

      ADC data item stats - attachment 26

      per FEE64 Rate spectra - attachments 27

      Cycle L DSSSDs per https://elog.ph.ed.ac.uk/CARME/603


06.04 DAQ continues file G22-201/R56_21

      DSSSD bias & leakage current OK - attachment 28

      FEE64 temperatures OK - attachment 29

      ADC data item stats - attachment 30

      per FEE64 Rate spectra - attachments 31

      beam 4e+7 stable, target 4e+11 stable

14:45

New run 55 with:

Right arm at 64.60 mm

Left arm IN at 36.54 mm

MBS working - hopefully

Target 7E11

Injection ca. 5E7

horizontal beam position 8.75 mm

vertical beam position  -5mm

Changed electron cooler set point to 244.2 V

Read value 243.66 V

Collector current 4.31A

Rates OK. Temps OK.

15:00

Detector 0 was noisy. Shook arm. Fixed it.

16:15

Detector 0 was noisy. Shook arm. Fixed it.

There is no beam in CRYRING since 16:05.

16:25

The beam is back but it is still a bit unstable and the operators are still trying optimize it.

17:20

We just did standard detector/electronics checks. Everthing looks OK.

17:50

Take screenshots.

20:50

Detector 0 was noisy. Shook arm. Fixed it.

But now detector 2 seems to have lost the Rutherford peak.

Screenshots taken and attached.

21:05

We did "Check ASIC Control" following Carlo's advise. This fixed the detector 2, but the detector 0 got noisy again. Another movement of the detector fixed the noise again.

22:15

Detector 0 was noisy. Shook arm. Fixed it.

23:05

This run has finished. The cooler voltage will be increased by 0.1V for the next run.

The latest spectra and detector/DAQ status are in the attachment.

Target density this morning had stabalised at 7e11 at/cm2

This is sufficient to test the beam/target overlap using the lifetime of the beam in the ring.

Previous attempt at this method was done at 1.5e11 at/cm2 where lifetime from residual gas and target are essentially the same.

Beam set to bunched. Beam position varied by 1mm and the number of particles in the ring taken from Grafana plots. Particles at injection compared with at dump.

Significantly more beam loss at > 8 mm beam position with highest value at 8.75 mm. This is the maximum we can move the beam.

Test repeated with no target. Same beam loss rate for all positions. We see a clear difference with the target only at positions > 8mm.

Test repeated with original electron cooler voltage Gleb tuned with last night. Same outcome -> cooler voltage has no significant impact on overlap (for 0.1V at least)

Overlap using count rate over 7.5 minutes also tested. DSSD 1 (top right) used as gauge as no beam stripe is seen in this detector. 

At horizontal position 4 mm (previous estimation of overlap) we saw a small increase in counts around 4.7 MeV with the target off compared to target on (76 vs 57)

At horizontal position 8.75 mm we saw a large decrease in counts around 4.7 MeV with target off compared to target on (95 vs 290)

It appears clear the overlap is at 8.75 mm. Future runs will use this as horizontal beam position.

09:30

New run 54 with:

Electron cooler setpoint 244.1 V

Electron cooler read 243.55 V

Collector current 4.3 uA

Right arm at 64.60 mm

Left arm IN at 36.54 mm

MBS working - hopefully

Target 7E11

Injection ca. 5E7

horizontal beam position changed to 8.75 mm

vertical beam position still -5mm

10:30

No beam

ADC stats increased to 250k again same time as beam lost

Detector shake resolved problem

System checks OK

10:35

Beam back

12:17

All system checks OK

12:29

DSSD top left noisy again. Detector shake resolves issuie

14:02

Running smoothly. Temps OK. Stats OK, but write to disk rate x10 usual for unclear reasons.

Target mostly stable. Beam OK, missing some injections occasionally.

14:25

Detector 0 noisy. Shook. Fixed it.

New run 52 with:

Electron cooler setpoint 244.2 V

Electron cooler read 243.66 V

Collector current 4.3 uA

Right arm at 64.60 mm

Left arm IN at 36.54 mm

Target 2E11 fluctuating

Injection ca. 5E7

22;00

Detectors moved out while HKR plays with the beam injection to improve its stability

22;56

All system checks good. Detectors still out. Stats in attachment 1

23:08

HKR still has to call, but I have put detectors back in since they are only operating on injection.

Noticed that from time to time the target density still sparks to E12, and this corresponds to when the temperature drops.

23:42

HKR called back, they found the problem and fixed it. Beam seems more stable, with injections at ca. 5E7

23:50

DSSD0 high stats, cycled the motors to clear them.

00:18

All system checks are fine. Attachment 2-3 with stats and a spectrum

00:38

Spikes in the target got more frequent. Increased temperature to 30.5K and monitor if it helps stabilizing it.

01:52

All checks OK. Target behaving, density 5-8E11.

Attachments 4-5

03:10

System checks OK.

Target consistent

Some beam outages which were quickly fixed by HKR

05:03

System checks OK.

Target consistent

07:00

Lost beam. Detectors moved out

Will likely end run once beam is back and change energy. Do not use data past 7 am

All system checks OK

Interactive Motion Program [workspace 6, display 2]

c                         stop current command(s)
l s by -20 mm             confirm y at prompt
l s by 20 mm              confirm y at prompt
read FakeMotion.dat       confirm y at prompt

15.40 DSSSD bias & leakage current OK - attachments 1-2
       log shows variations due to ambient temperature changes in CRYRING hall

      FEE64 temperatures OK - attachment 3

      WR timestamps OK - attachment 4

      System wide checks Ok *except* global clock (aida16) - attachments 5-6

      ADC data item stats OK - attachment 7

      per FEE64 Rate spectra - attachment 8

      per FEE64 1.8.L spectra - attachments 9-10
       have not been cleared in some time probably - will zero histograms & stats for later review

     per FEE64 1.8.W spectra - 20us FSR - attachments 11-12

     Merger, TapeServer etc - attachments 13-14
      data file G22-222/R51_15

     Motion control - attachment 15

16.01 all histograms & stats zero'd

16.43 online per DSSSD energy spectra - attachment 16

      photographs of CRYRING beam & target diagnostics - attachments 17-22

18.45 Left DSSSDs cycled to clear high rates (c. 250k/FEE64) aida01-aida04 per https://elog.ph.ed.ac.uk/CARME/603

18.49 DAQ continues data file G22-201/R51_27

      DSSSD bias & leakage current OK - attachment 23

      FEE64 temperatures OK - attachment 24

      ADC data item stats OK - attachment 25

      per FEE64 Rate spectra - attachment 26

      online per DSSSD energy spectra - attachment 27

19.00 Beam less stable but most cycles 5e+7 or higher
      Target peaking c. 1e12 dropping to c. 6e11

19.09 CRYRING hall temperature increasing, DSSSD leakage current increasing - attachments 28-29


20.06 Beam less stable most cycles 1-2e+7 or higher
      Target c. 1-2e12

20.15 JM/CB advise changing Lakeshore 336 Temp Controller set point from 29k to 29.5K - done
      Average pressure decreases but rapid variations still observed - see attachment 30


21.00 contacted HKR to improve beam stability - they were alreday working on it but did not know what was causing the problem - will contact on-call CRYRING expert

      cycled L DSSSD to reset rates
      
21,10 beam 0ff - DSSDs OUT

      Increased target temperature to 30K to solve instability that developed again up to E12 density range.


      


 

11:13

ML enabled ring signals remotely.

Used FakeMotion.dat (read FakeMotion.dat from InteractiveMotion.x).

Started run 50.

Cooler voltage moved up by 0.1 V. Did not refocus.

Setpoint = 244.4 V

Read = 243.85 V

Collector current = 4.3 mA

Target thickness 3.4E11 atoms/cm2 now stable

Injection 1-4E7 ions

Realised motors were not in.

Moved detectors in (36.54 / 64.60 mm)

Started run 51. Ignore run 50.

11:46

Realised the left half of DSSD BL was not counting. Checkloaded. Fixed it.

12:00

Fire alarm? Stopped later. EM thinks it is a test.

13:00

Run continues.

Rates OK. Merger OK. Writing to disk back to 200 kB/s. Nothing changed, reasons unclear.

FakeMotion.dat continues

System wide checks as before

Temperatures OK

13:36

Beam lost. Called HKR. Detectors out. Run continues. FakeMotion stopped

14:09

Beam is back. Detectors back in. FakeMotion.dat restarted.

15.10 High rates observed aida01-auida04 ( c. 250k/FEE64)

          Cycled Left Servo

         Rates normal

07:00

After putting the target back, we observe strong periodic (5 s) fluctuations going from 3E11 to 5E12. The reason is unclear. One may warm up the target to solve this, but will ask Nikos later instead.

The target may be a bit too thick for our purposes, and the luminosity will vary greatly depending on injection vs. target fluctuations timing.

Rates OK. Temperatures OK. Merger OK.

System wide checks as before.

07:30

Moved detectors fully out to check elastic and signal rate in this configuration.

Half of DSSD BR was missing. Checkloaded. Solved.

Moved to run 48. Target still unstable.

08:23

Beam issues. Called HKR. Target out.

09:00

Still no beam. Increased target temperature to 29K from 28.5K. It seems the fluctuations disappeared.

Rates as before.

10:22

Beam might be back but people are checking the steerer. Target in. Started run 49. Detectors still out.

10:13

Some beam. HKR is still working on it.

Data rate up to 2 MB/s. Merger events merged matches. However Stats do not seem to have increased. This is the second time I observe this.

RUN 46- started at 00:50

Horizontal beam position = 4.0 mm, vertical beam position = -5.0 mm.

Detectors are Left arm OUT = 36.64, right arm IN =  64.60 mm

Injection at ca. 6E7

Target density 6-7E9

-----

00:51

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachments 1-2

01:19

Attachments 3-4 waveforms. DSSD0 stats fine

01:33

DSSD0 stats fine

Attachments 5-6 spectra and xy, but I am not sure at which time these are cause I am stupid and apparently the AIDAsort code was not running....

01:56

Restarted the AIDAsort code and noted that stats in DSSD0 were bad again. Another shake. This time no change to the beam on my side.

2:43

All checks fine. Attachments 7-10 (also spectra)

4:01

Notice stats on DSSD0 went bad again. Attachment 11. Gave detector a shake.

Now all system checks OK (Attachements 12-14)

4:19

Just noticed target is oscillating a bit, hitting 1E10. I moved it further in X and Y. Seems to not go below 6E9 in any case.

NOTE: target was on at x=-19899 y=500.

5:17

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachments 15-18 (also waves)

5:53

Notice stats on DSSD0 went bad again. Gave detector a shake.

6:10

Stats ok in attachment 19, but

Noticed DSSD3 has started to get only a fate of 140 nstead of previous 5500is (similar to what DSSD2 has done earlier- see previous elog). Attachment 20 for the rates.

I have therefore made the Check ASIC control test from the ASIC control tab- attachment 21 with results.

DSSD3 back to normal operations - attachment 22

Tried to double check beam-target overlap by changing beam horizontal coordinate.

In the tablethe counts in the 4000-5200 keV region in each of the detectors are recorded. Counts were taken for a total time of 5 minutes per beam position. Attached are the xy plots.

I think the tests are inconclusive given that the beam in the first three points were not ideal, with many low intensity injections. Moreover, changing the beam often ends up causing the stats in DSSD0 to rise significantly (consequentely needing to shake the detector to go back to normal operation).

After fixing DSSD2, statsin DSSD0 went up again. Stopped the test after shaking again the detector.

----

I have put back the beam at 4mm horizontal. I switched off the target by moving it to x=-10000--->x=-5000 (previosuly X=-19800). Denisity went down to 5E9. However, I decided under Jordan's suggestion to make another test and I put the target back to x=-19800: interestingly the density went up to 5E12 and start oscillating for a while between 5E12 and 5E11.

I did a 10 minute check of counts in the 4000-5200 keV region with this configuration, then switched off the target and did another 10 minutes test. Results:

Re-increase in DSSSD leakage current c. 14-15.00 6.6.24 

There was a significant temperature spike in the CRYRING hall on the afternoon of 6.6.24 which has, partly, recovered - see attachment 1

15:35

Electron cooler voltage set point = 244.3 V

Electron cooler voltage readout = 243.75 V

Collector current = 4.29 mA

All system checks OK

Cycle time = 6 s

Detector positions: left = 36.54 mm, right = 64.60 mm

Target density = 2.5e11

Injection = 3 - 4 e7 pps

15:50

Injection intensity dropped to 1e7 pps

15:54

Injection intensity back to ~4e7 pps

17:30

All system checks OK

Target at 3.7e11

Beam dropped to 1e7 pps

17:34

Beam back to 3-4 e7 pps

19:10

Beam started varying between 1e7 and 4e7. The operators briefly closed the Faraday cup (~30 seconds), the beam is now back to ~5e7

19:25

All system checks OK

Target at 2.6e11

Beam at 5e7

21:25

All system checks OK

Target at 2.7e11

Beam at 4-5 e7

11:05

Confirmed overlap is at 4 mm under new settings.

For unclear reasons, the bottom-left detector is not seeing the halo anymore since around 10:00. Rutherford still visible and if the left arm is moved in the counts at 5 MeV become apparent.

l s by 20 mm, r p in -> 36.5 mm /  64.6 mm

Target thickness 3E11 atoms/cm2. Beam intensity few E7 at injection. Coasting beam mode.

Data rate x10 compared with earlier. Stats as before - the reason is unclear.

Temps & Merger OK. We should be able to tolerate these rates.

Moved detectors in/out to make sure we were not clipping the beam. A few seconds of data may be present in R41_9

11:30

Checkloaded. Detector 2 is now counting more.

Moved to run 42. No other changes.

13:00

Realised cooler voltage was being read via fault g35 divider. Beam stopped

15:00

Switched to F20. Beam back on. Moved to run 43

Electron cooler voltage = 243.155 V

Collector current = 4.29 mA

Beam energy was slightly off, will try again

Started run 39.

We have the 15N+ beam with 426 keV/nucleon. We see a peak in detector top left (mostly) and bottom right, at 4600 keV. We think it is the beam (nominally 6400 keV) after going through silicon dead layer, which however seems to be thicker than expected (expected 0.7 um, but given 1.4 MeV/um energy loss it seems to be > 1 um).

To understand what was going on we first played with detector and beam position.

At 17:28 detectors are fully out, while we are playing with the electron cooler to try to remove this beam halo hitting the detector.

Detector DSSD0 top left periodically seems to get noisier (statistics up to >2E5) and we need to move the detector in and out to go back to normal operations.

------------------

The beam halo in top left detector, as the detector gets moved in, gets elongated in the y direction instead of the x direction, as expected and previosuly observed.

Run 40 started.

18:36

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachments 1-4

19:43

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachments 5-8

21:15

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachments 9-11

00;25

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

-----------------------------------

Movements and observation in xy plot:

- Move right servo in by 20 mm and we see the halo in the top right moving accordingly (attachment 12)

-Move right pneumatic in, saw big increase on bottom right (attachment 13)

-moved beam position down vertical -6 mm and we see reduced beam spot on top left and more on bottom left

-----------------------------------

Beam - target overlap:

We have yet to obtain an overlap

We cannot do this using the beam lifetime as from beam calc the lifetime from the ring is comparable to the lifetime with a target of 1e11 at/cm2

We have tried using Rutherford. However, we will have to move the detectors IN further as the Rutherford peaks at ~3.8 deg.

Possibly we may require other overlap detections from the ring?

I also think the beam requires some optimisation, electron cooler voltage seems to be fluctuating a lot and we see some features on the detectors when moving the beam / detectors as mentioned above.

02:25

The beam intensity has decreased signficantly (by about a factor of five) since about an hour. Operators tried different things, also consulted with Frank Herfurth, but they could not solve the problem.

There is no device which indicates malfunction.

So, during the rest of the night shift we will continue searching for the overlap (of the beam with the target) with the available beam intensity.

03:30

The beam intensity has improved without any aparent intervention.

We have started a new search for the overlap with 20 minute runs per horiznotal beam position.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

03:40

After changing the horizontal beam position from 0 mm to 1 mm, the bottom right detector lost the Rutherford peak and its position spectrum looks to be half empty.

Moving it OUT and IN again did not change the situation.

There is no reason to think that this behavior has been caused by moving the beam by just 1 mm.

04:10

The beam intensity has dropped again without any apparent reason. So, at the moment we can not continue search for the overlap.

The bottom right detector seems to be counting normally again (also without any apparent reason). 

06:45

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

07:18

Lost beam again. Gleb is looking for it. Moved right detector out temporarily.

System wide checks as before.

Merger OK, Tape Server OK.

Temperatures OK.

Rates currently OK.

Leakage current decreasing.

10:10

Beam is back. Target is unusually thick at 3-5E11

Checking beam overlap.

Merger & tape server OK.

Temps OK.

Rates OK, a bit higher in 01 and 04.

06:45

All system checks OK

Target density 3.4e11

11:50

System checks OK.

No beam in the ring yet. Althoug some injection may be taking place at low intensities

Target density appears much more stable than before.

Density currently just above 1e11 at/cm2

Note maintanace is required to appc025 so anydesk is currently down.

13:13

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachments 1-5 (also waveforms)

15:00

Merger OK, Tape server OK

ADC data item statistics DO NOT looks as before. NOT OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachments 6-8

15:16

Notice the statistics for aida01-aida04 (DDSD 0, top left) were counting extremely high in the previous check (attachment 6). Previous rate was 0-1 counts.

We tried ASIC check load three times but not effect on the rate.

We then tried 'shaking the detectors' by moving the left pneumatic in and out again.

Rates go back to normal levels (0-1 counts)

14:20

Target nozzle currently being replaced. No beam

We have decided to switch to 15N beam from now on.

Beam energy for 15N is significantly higher than deuteron beam so we have increased the thresholds (slow comparator) slightly for all detectors to 500 keV (0x32).

ADC data item rates - attachment 1

Run 37 started. Alpha background

Data rate ~ 200 kb/sec

17:44

All system checks OK

20:00

All system checks OK

23:30

All system checks OK

01:25

All system checks OK

03:25

All system checks OK.

Target is stable at 3.5e11, with T1=29 K

05:30

All system checks OK

Target density has slowly drifted down, and is now 1.2e11

14:00

Access to the cave as Nikos and Andreas have begun work on the target.

Run 36 started - pulser walkthrough.

Pulser amplitudes of 8, 7, 6, 5, 4, 3, 2, 1

Attachment 1 - pn channels

Attachment 2 - nn channels

Attachment 3 - pn channels (zoom)

Attachment 4 - nn channels (zoom)

Best pn channel looks like AIDA09 - pulser width 63

Worst pn channel looks like AIDA14 - pulser width 148

Best nn channel looks like AIDA12 - pulser width 58

Worst nn channel looks like AIDA16 - pulser width 246

This is approximately the same as pulser widths before the beam time.

09:30

Target density has not improved despite efforts last night. Mid 10 - low 11 density range. We will try to change the nozzle.

Target nozzle moved to the out position.

HKR allowed access to the cave to turn the compressor off. Target nozzle now warming up.

Internal cave work on changing nozzle expected to start at ~11. In the meantime we will let Wolfgang experiment with the beam settings to try to improve injection intensity.

Detectors have been moved out to fully out position

Run 35 started.

1) STOP DAQ [workspace 2, display 1, browser tab 'Run Control']
   all FEE64s should change status from 'going' to 'stopped' *except* whichever FEE64(s) have a problem - typically their status is 'going' or 'error'

2) Restart Merger by selecting the Merger icon [workspace 3, display 2]
    terminal window showing the startup will popup

3) Setup Merger by selecting 'SETUP' [workspace 3, display 1, browser tab 'NewMerger Control']

4) Start Merger by selecting 'GO' [workspace 3, display 1, browser tab 'NewMerger Control']
     all data links will be inactive (red)

5)   Disable data transfer by selecting 'Data transfer Disable #1 all' [workspace 2, display 1, browser tab 'Run Control']

6) Start DAQ

    Start DAQ by selecting 'GO' [workspace 2, display 1, browser tab 'Run Control']
     check that DAQ is *actually* going - if not repeat 'GO'

7) Check WR timestamps by selecting 'Collect all timestamps' [workspace 2, display 1, browser tab 'GSI White Rabbit Control']
     readout times will be displayed for each FEE64
     check that the readout times are monotonically increasing as you read down the list of readout times - if not, contact expert support

8) Stop DAQ 

    Start DAQ by selecting 'STOP' [workspace 2, display 1, browser tab 'Run Control']
     check that DAQ has *actually* stopped - if not repeat 'STOP

9) Enable data transfer to Merger and TapeServer and start DAQ

    Enable data transfer by selecting 'Enable data transfer Enable #1 All' [workspace 2, display 1, browser tab 'Run Control']

    Start DAQ by selecting 'GO' [workspace 2, display 1, browser tab 'Run Control']
     check that DAQ is *actually* going - if not repeat 'GO'

10) Check data is being transferred to Merger and TapeServer

    Select 'Reload' [workspace 3, display 1, browser tab 'NewMerger Control']
     you should see a non-zero 'current merged data rate' and all links should show as green at least some of the time (requires observation over several reloads)

    Select 'Reload' [workspace 3, display 1, browser tab 'TapeServer']
     you should see 'Blocks written' and 'kb written' counters increase

11) Check AIDA data is being forwarded from the TapeServer to MBS [workspace 3, display 2, command terminal]

12) Restart should now have been successfully completed. Please inform the 'on shift' crew' that AIDA is forwarding data.

    If not, please request expert assistance.

19:08

Beam energy = 3 MeV.

Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm.

Target density ~ fluctuating

Beam intensity at inj ~ 1.7e7

Detectors are positioned IN. Left arm = 36.54, right arm =  64.60 mm

MBS signals saved from motors code

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 6 minutes.

Pressure in YR09 E target ~ 4.36e-11 mbar.

Merger error recovered

White rabbit time stamps

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

21:27

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

23:00

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Statistics attachment 5

Merger attachment 6

00:42

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Density is oscillating between E10 and low E11.

attachment 7 is statistics, attachment 8 is temperature, attachment 9 is merger, attachment 10 is spectrum browser.

02:20

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Density is oscillating between E10 and low E11. ( last 15 minutes below 2E10)

attachment 11 -13

From 2:00 target density falls below 2E10 and started decreasing to the E9 range. At 2:40 we started playing with x-y to get to higher density. At 3:30 we are at 5/6E10 and waiting to see if it stabilizesto that or if it needs more playing.

04:06

Target density being 1-2E11 since 5 minutes

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachment 14 statistics, attachment 15 merger

05;53

Target density 1E10, sometimes e11, before going down to low E10 and we need to play a bit with x-y to recover it

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Attachment 16-18

07:35

Target density 2.5E11, after changiny y position to 1000

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

09:00

Target density has not improved despite efforts last night. Mid 10 - low 11 density range. We have asked HKR to remove beam from the ring and allow access so Nikos can change the nozzle.

Beam off now, access granted. Will begin warming nozzle. Internal cave work on changing nozzle expected to start at 11

Run stopped.

Final monitoring code histogram attached

16:26

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Nicos came in to optimize target density.

18:39

aida02 in the MERGER aka aida03 elsewhere has a red background, but still appears to be transferring data. Rates are fine. Temps are fine. System wide checks unchanged.

See attachments. Checkloaded x2 - no difference. Unclear what the issue is.

15:15

Run 32 started - Beam, no target

Beam energy = 3 MeV.

Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm.

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN. Left arm = 36.54, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 5 minutes.

Pressure in YR09 E target ~ 4.5e-11 mbar.

Motors code crashed. Beam removed from ring to re-home detectors.

15:20

Beam in the ring again, detectors homed, no target

Detectors have been set up to send signals on injection / dump

15:35

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

8:13

Since 6:40 the target density dramatically dropped to 10^9 since then it has been unstable and did not recover. Currently it is around 8e8.

09:00

Target density has been increased to the high -10, very low -11 region. We will keep this run going unless the density is increased further.

10:21

Beam energy = 3 MeV.

Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm.

Target density ~ 1e9 at/cm2 (no target, get lost quite quckly)

Beam intensity at inj ~ 1.7e7

Detectors are positioned IN. Left arm = 36.54, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 6 minutes.

Pressure in YR09 E target ~ 4.36e-11 mbar.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

target density has been fluctuating between E9 to E12. We can very clearly see the increase in elastic counts on our detector during high density periods.

Attachment 1 - rate plots at 1E12 at/cm2

Attachment 2 - rate plots at 1E9 at/cm2

12:26

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

After reaching a density of > 10^12 a bit before 11:00, the valve got closed. When a valve is closed, can be observed a dramatic change in the plot and one of the three green ligths of atps7vaccrz1 (0,2,4) is turned off. Nikos opened it, and now it seems stable again around 1e11.

14:07

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

15:05

Run stopped as target density is rubbish. Might as well get beam background

Beam energy = 3 MeV

Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm.

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN. Left arm = 36.54, right arm =  64.60 mm

Cycle time ~ 6 minutes

01:05

Target density still very unstable

02:45

Target density has dropped to ~1e9 and has been at that level for 30 minutes. We will try to move the target a bit and see if we can get an increase. Target position is currently x=-12400, y=2900

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

04:15

We were able to recover some target, but it is still very unstable. The new position is x=-12800, y=2000

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

06:15

Target still unstable, fluctuating around the 5e10 region

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Beam energy = 3 MeV

Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN. Left arm = 36.54, right arm =  64.60 mm

22:52 (Attachments 1 -3)

Beam is very unstable

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

00:47

Beam is still very unstable.

We checked for beam-target overlap position and found a clear increase in counts at beam position 4.0 mm. We have left the beam at horizontal = 4.0 mm, vertical = 0.0

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

16:15

In the previous run while working on the target it was discovered that the valve was closed! Probaly this happened around 10 am, we are not sure.

The gas target inlet valve is open again, working on the target.

Beam energy = 3 MeV

Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN pneumatic only. Left arm = 62.71, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 7 minutes.

Pressure in YR09 E target ~ 4.5e-11 mbar.

18:03 ( Attchments 1 -4)

Still no target!

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

20:23

We have the target back. S1( grafana) 4.8e-8. The target thickness read by the system 5E11 atoms/cm2 but apparently the formula is wrong and the value should be almost e12 atoms/cm2.

. We have now proper beam and target and we

16:10

We start a new run after doing some test with the motor. Injection time is now a 6s, moving of the motors is working fine.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

No target

12:46 (attachments 1-4)

Run 27 started - Beam no target

Beam energy = 3 MeV

Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN pneumatic only. Left arm = 62.71, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 7 minutes.

Beam on BPM looks to be better than at previous energy.

Pressure in YR09 E target ~ 4.5e-11 mbar.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

13:45 (attachments 5-8)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

15:15(attachments 9-12)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Target density 1e10 atoms/cm2. Still working on the target.

09:44

Run 26 started - Beam no target

Beam energy is being increased from 1.5 to 3 MeV

Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.

Detectors are positioned fully OUT

Histograms and stats zero'd, monitoring code restarted.

Pressure in YR09 E target ~ 4.5e-11 mbar.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

10:48 (Attachements 1-4)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The detectors currently fully out for tuning.

11:57 (attachments 5-8)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The detectors currently fully out for tuning.

00:38

Run 25 started - Beam on target

Beam energy = 1.5 MeV.

Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.

Target density ~ 5e11 at/cm2 (Still Fluctuating, after temperature increase)

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN. Left arm = 62.71, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 5 minutes.

Pressure in YR09 E target ~ 5.2e-11 mbar.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

01:30 (Attachments 1 - 4)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density seems very unstable: fluctuations from 1e11 to 1e12 atoms/cm2 within 5min

02:37 (Attachments 5 - 8)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density is around 5e11  atoms/cm2 with small adjustments

03:32 (Attachments 9 - 12)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density is in average 5e11  atoms/cm2 with some small  adjustments. Max values up to 3e12 atoms/cm2

One of the injections at 03:43  was not ok and we lost beam for some min.  Target density 1e12 atoms/cm2.  On 04:00 the beam was back again without any operator intervention.

04:35 (Attachments 13 - 16)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density is in average 1e12  atoms/cm2.

05:43 (Attachments 17 - 20)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density decreased to 2e11 atoms/cm2 in the last 40 min

06:43 (Attachments 21 - 24)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density is fluctuating from 1e11 to 1e12 atoms/cm without any change....

07:53 (Attachments 25 - 28)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density is fluctuating from 1e11 to 1e12 atoms/cm without any change....

08:48 (Attachments 29 - 32)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

The target density is fluctuating from 1e11 to 1e12 atoms/cm without any change....

09:40 --> Run 25 stopped.

23:47

Run 24 started - Beam on target

Beam energy is 1.5 MeV.

Horizontal beam position = 7.0 mm, vertical beam position = -1.0 mm.

Target density ~ 1e11 at/cm2 (Still Fluctuating, after temperature increase)

Beam intensity at inj ~ 2.5e7

Detectors are positioned IN. Left arm = 62.71, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 10 minutes.

Pressure in YR09 E target ~ 5.2e-11 mbar.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

00:23

Target density ~4.65e11 atoms/cm2

Beam intensity at inj ~ 2.7e7

Beam intensity dropped to 2.1e7 in 10 minutes. Proportionall this is much greater than before. 

Run 24 stopped.

Offline analysis data file G22-201/R22_0 to R22_11

Sort program variables https://elog.ph.ed.ac.uk/CARME/240530_180659/variables.dat

ADC data corrected for ADC offset but not gain

per DSSSD m_p verus m_n - attachment 1

For spectra below events must satisfy condition 0 < m_p < 8 *and* 0 < m_n < 8

per DSSSD p+n junction strip versus n+n Ohmic strip - attachment 2
 note - x/y channel ordering to be checked

per DSSSD E_p versus E_n - attachment 3
 20keV/channel nominal

per DSSSD E_p versus E_n - attachment 4
 gated w(1) & w(2)
 20keV/channel nominal

per DSSSD projection of gated E_p versus E_n spectra - attachments 5-8
 20keV/channel nominal

14:05

Run 22 stopped. Run 23 started we will now adjust the vertical beam position to see if we observe the beam stripe seen in the last beamtime.

Current vertical beam position 0.0 mm. Horizontal beam position 7.0 mm. Coasting beam.

Beam D+, 1.5 MeV. Storage time ~ 20 minutes. Target ON. Density ~1e11 at/cm2.

XY plot from run 22 with the same settings - attachment 1

Beam stripe looks like it is just on bottom detectors (just )

14:10

New beam settings

Vertical Beam position 5.0mm, Horizontal unchanged. Storage time reduced to ~2 minute

No real change observed. Perhaps some thing more can be seen on top right detector but definitely not like in the Feb experiment.

14:15

New beam settings

Vertical Beam position 9.0mm, Horizontal unchanged.

No real change observed again.

14:20

New beam settings

Vertical Beam position -9.0mm, Horizontal unchanged.

More events observed on bottom left detector but nothing like the Feb measurements. I think we do not have stripe effects like previously.

14:40:50

New Beam settings to check beam lifetime.

Vertical beam position set back to 0.0 mm. Horizontal unchanged

In bunched mode to observed intensity over time. 

Injection into ring 2.2e7

15:15

Beam intensity dropped to 1.1e7. Beam lifetime 35 minutes.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

15:24

We removed the target. Beam intensity at 2.2E7

After 35 minutes, the beam intensity is 1.41e7. So target does have effect on beam lifetime! We would like more.

16:05

We will now bring target back in and try to increase density.

16:10

Some sort of GSI-wide failure, we have lost beam entirely. We don't see any effect on our system. Temperatures and leakage currents are stable

Detectors moved fully out for safety

17:15

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

19:15

Still no beam

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

21:15

Still no beam

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

21:40

Beam has returned!

22:00

Target at around 9e11 and appears stable

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

22:33

Beam back in the ring. Beam settings to be updated.

Rates in right hand detectors look slightly different to before - lower in bottom right, slightly higher in top left. Perhaps beam vertical position needs to be lowered slightly.

ASIC check load just to be sure. Rates in aida15 greatly reduced - only temporarily.

09:47

12 seconds pre acc

200x cycles

Detector pneumatics IN, not moving

Running in this configuration for the rest of the shift

Target is barely 1E11 atoms/cm2 and keeps decreasing

Temps OK, checks OK, Stats OK

Writing to disk rate OK

11:22

Targets gets thinner and thinner <1E11 atoms/cm2

Temps OK System wide checks OK Merger OK

Rates OK

13:02

Temps OK. Target around 1E11 atoms/cm2

Merger OK

Rates OK

07:41

Switching to bunched beam to check D vs H content.

8:24

Attach 1&2

ONE spill

Detectors fully out

Switched to bunched beam

12 seconds pre-acceleration

100x cycles (600 seconds) -

Loss over 600 seconds 3.97E7 ions to 3.40E7 ions, i.e. negligible.

Attach 3&4

Coasting beam

12 seconds pre-acc

100x cycles

Attch 5&6

Coasting beam

12 seconds pre-acc

100x cycles

Detectors pneumatics IN

Attach 7& 8

Coasting beam

6 seconds pre-acc

100x cycles

Detector pneumatics IN

Attach 8&9

Coasting beam

12 seconds pre acc

200x cycles

Detector pneumatics IN

Running in this configuration for the rest of the shift

Target is barely 1E11 atoms/cm2 and keeps decreasing

22:56

Run 20 started - beam on target

Beam energy is 1.5 MeV. Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.

Target density ~ 1e11 at/cm2

Beam intensity at inj ~ 4e7

Detectors are positioned IN. Left arm = 62.71, right arm =  64.60 mm

Histograms and stats zero'd, monitoring code restarted.

Beam in the ring ~ 3minutes.

Pressure in YR09 E target ~ 4.5e-11 mbar.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

01:15

Target density has increased slighty: ~ 4e11 at/cm2 (update: this only lasted about 5 min)

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

3:10

Target density has decresed slightly but will come back (hopefully) ~7e10 at/cm2.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

05:15

Target density has been somewhat unstable, between ~7E10 and ~3E12 at/cm2.

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

07:37

Run continues. Target density still fluctuating around 1E11 atoms/cm2.

Temperatures OK. Merger OK. Rates OK.

System wide checks as before.

Waveforms OK. See attachments.

Some screenshots from the online analysis. We do not see a peak at 1 MeV. We do however clearly see more D than H2+.

Stopping run to make some tests.

Offline analysis data file G22-201/R17

Sort program variables https://elog.ph.ed.ac.uk/CARME/240530_180659/variables.dat

ADC data corrected for ADC offset but not gain

per DSSSD m_p verus m_n - attachment 1
 DSSSD #2 spectrum is normal, DSSSD #1 and #3-4 display large multiplicities in p and/or n strips which are, presumably, non-physical events at DSSSD edge

For spectra below events must satisfy condition 0 < m_p < 8 *and* 0 < m_n < 8

per DSSSD p+n junction strip versus n+n Ohmic strip - attachment 2
 note - x/y channel ordering to be checked

per DSSSD E_p versus E_n - attachment 3
 20keV/channel nominal

per DSSSD E_p versus E_n - attachment 4
 gated w(1) & w(2)
 20keV/channel nominal

per DSSSD projection of gated E_p versus E_n spectra - attachments 5-8
 20keV/channel nominal
 log scale

Offline analysis data file APR24/R3 (alpha background)

Run started 11:04 26.4.24
Run ended   09:44 29.4.24

Sort program variables https://elog.ph.ed.ac.uk/CARME/240530_180659/variables.dat

ADC data corrected for ADC offset but not gain

per DSSSD m_p verus m_n - attachment 1

For spectra below events must satisfy condition 0 < m_p < 8 *and* 0 < m_n < 8

per DSSSD p+n junction strip versus n+n Ohmic strip - attachment 2
 note - x/y channel ordering to be checked

per DSSSD E_p versus E_n - attachment 3
 20keV/channel nominal

per DSSSD E_p versus E_n - attachment 4
 gated w(1) & w(2)
 20keV/channel nominal

per DSSSD projection of gated E_p versus E_n spectra - attachments 5-8
 20keV/channel nominal

2D spectra z contours/colour map - attachment 9

Morning shift

08:16 - as run 18, target off

9:00 Increased storage time to 5 minutes. Aquired data after initial beam loss. Attach 1 &2. Far less H2+ vs D.

Temps OK

Rates as before

10:00 beam being optimised to reduce 2H+ content

Rates in aida 13, 14 suddenly spike as during overnight. Checkloaded repeatedly. No effect. Increased thresholds in 13, 14 to 0x32 bringing them in line with 15,16.

12:50

We started test with beam

Test1 ( Attached 12-52-55)

Horiz. offset: 8mm

Max vuel on 1.5MeV =1480 counst

Test2

Horiz. offset: 7mm

Test3

Horiz. offset: 6mm

target density=2.4E11

Test4

Horiz. offset: 5mm

target density=from 1.7E11 to 2.5E11

Test5

Horiz. offset: 4mm

target density=from 5.6E11 to 1.1E11 several fluctuations

Test6

Horiz. offset: 3mm

target density=1.1E11 several fluctuations. Until now we do not see a clear  signel from the reaction!

Test7

Horiz. offset: 2mm

target density=1.1E11 several fluctuations.

Test8

 Beam back again. Coasting beam. Detectors IN

Horiz. offset: 8mm

xy and energy histograms - attachment 12 and 13.

Test9

Bunched beam Detectors IN

Horiz. offset: 8mm

xy and energy histograms - attachment 14 and 15.

Test10

Horiz. offset: 6mm

xy and energy histograms - attachment

target:1.6E11

xy and energy histograms - attachment 16 and 17.

Afternoon shift

From previous overlap tests we can see that moving the beam position does cause a change in the number of events observed in the detectors.

But the change in events appears to be due to beam halo hitting the detectors rather than elastic scattering. New approach required.

We have varied the beam position (horizontal) in 1mm steps from 0mm to 9mm (the maximum allowed). We do this with the target ON and then with the target OFF.

Integral of events ~1.5 MeV taken . Difference between the target and no target plotted to gauge overlap position.

Note we have moved left arm fully out as we were worried about beam hitting dssds on injection. Will check overlap with right dssds only as left dssds have very low rate at this position.

We have determined the overlap position is about 7.0mm horizontal

Attachment 18 shows initial scan.

Attachment 19 shows a second scan in the region we highlighted as possible overlap.

22:53

Run 15 started

Beam tests. We increased the storage time to 2min and switched to bunched beam so that we can see the beam lifetime over the cycle.

D+ Beam energy is set to 1.5 MeV.

Detectors are positioned in with servos only (left arm = 28.06mm, right arm = 29.23 mm)

No target

We observe a large peak at the start of the cycle at 750 keV. This seems to be molecular hydrogen circulating in the ring. We also see a much smaller peak at 1.5 MeV (D+)

After a period of time the 750 keV peak decreases significantly and we are left with the 1,5 MeV peak only. 

Total energy histogram after running for ~ 1 hour - attachment 1

Total xy plot after ~ 1 hour - attachment 2

We observe the large circular structure on the left hand detectors. Is this related to hydrogen or is it the beam type (bunched instead of coasting)?

In the GSI control plots for the number of ions in the ring we observe a large drop in ions circulating at the start of the cycle, and then remains fairly constant throughout the rest of the cycle. - attachment 3

This seems to confirm our hydrogen hypothesis.

23:54

Run 15 stopped, Run 16 started.

All setting the same and still no target, except beam is now coasting. We will compare to Run 15 after one hour of running.

We do not observe the circular distribution on the detector seen in the previous run. It seems this effect comes from the bunched beam. Reason?

We still observe the 750 keV peak at the start of the cycle.

Total energy histogram after running for ~ 1 hour - attachment 4

Total xy plot after ~ 1 hour - attachment 5

00:59

Run16 stopped. Run 17 started.

All settings the same except we have switched back to bunched beam.

Target now on. (X=-13700, Y=0). Target density ~ 1E11 at/cm2.

02:03

Run 17 continues

Target has increased in the average density to ~4e11 at/cm2, no changes made to nozzle position and fluctuates to 1e11 or 1e12 at/cm2.

Energy histograms and the xy plots appear similar to bunched beam with no target. The rates are slightly lower with the target for the left hand dssds, maybe target interactions destroy molecular hydrogen quicker?

Total energy histogram after running for ~ 1 hour - attachment 6

Total xy plot after ~ 1 hour - attachment 7

We will continue to run for another hour or so in this condition

Target density has decreased over the last minutes. We have tried to move the nozzle to maximise density but fluctuations make this difficult.

03:55

Increase in ADC data items statistics for aida 13 and 14 from ~20 kHz to 90 kHz

ASIC checkload has reduced the rates back to ~ 20 kHz

Total energy histogram after running for ~ 3 hour - attachment 8

Total xy plot after ~ 3 hour - attachment 9

Run 17 stopped. Run 18 started

Beam changed back to coasting. All other settings unchanged. Target on. 

04:55

Run 18 continues.

Energy histograms and the xy plots appear similar to bunched beam with no target. The rates are lower with the target than without.

Total energy histogram after running for ~ 1 hour - attachment 10

Total xy plot after ~ 1 hour - attachment 11

Note we observed fluctuations in the T2 temperature for the target. T2 is set to 80 K but rapid fluctuations were observed up to 100K. This occurred for only 5 minutes and I am not sure if it is a real effect.

07:20

Temperatures OK

System wide checks OK

Rates OK

Stats OK

Waveforms attached

Leakage current decreasing slightly.

No changes to beam or target.

22:03

Before this run we checked quickly  beam with the target on but it does not make sense with the current status of the beam.

We removed target and starte Run14

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

20:00

The beam is set at the correct energy, operators cross-checked it again. What we see  at 750 is due to the molecular beam.  The operotors are trying to optimize and get rid of this in the next 30min.

Temps and system checks OK

Leakage current OK

Merger and tape server OK

Potentiometer at 28.06 mm and 29.23 mm

20:30

Keep going with the beam tests. A new peak appears around 950 keV( See attached). Still try to understand what it is. The operators keep going

07:00

Run 12 started. D+ beam is incident on the target at 1.5 MeV

Beam intensity in the ring is ~4e7 particles

Target density shows some fluctuations but is ~1e11 atoms/cm2. Target temp 35K

Detectors are positioned fully out (Left arm 18.86mm and right arm 19.8 mm ) and are not moving

Ring pressure looks OK, YR09 E target sensor seems unaffected by the target currently reads ~5e-11 mbar.

Beam is in the ring for ~15s.

Temps and system checks OK

Leakage current OK

Merger and tape server OK

Horizontal beam position 8 mm and vertical beam position 0mm for overlap with target.

Statistics - attachment 1

Energy histogram - attachment 2

XY plot - attachment 3

We see high rate at 1.5 MeV in left dssds but very little in right dssds. XY plots also show counts are concerntrated in a very circular distribution.

07:15

Gleb has just called and requires access to the cave to check on a turbo pump in the source.

Ring vacuum looks good

Beam will be down for 10-15 minutes only hopefully. 

07:45

Beam is back in the ring but injection requires optimisation.

09:00

There are some issues with the source that require a few hours to resolve. Potentially until 7 or 8 pm tonight. We have about an hour before work starts.

We have done a quick test of the motors and moved the left and right arms in using the pnuematic only.

New position left arm = 62.71 mm , right arm = 64.6 mm.

We observed the rates in left detectors went up significantly. In the right detectors we observed little increase.

See attached xy plot - attachment 4

See attached energy histogram - attachment 5

Beam intensity has dropped significantly - below 1e6 particles so even at in positons we see few counts at the moment.

09:25

Source has degraded pretty rapidly so beam will be stopped for now.

Detectors moved back out.

Target nozzle moved from X= -13000, Y=2500 to X= -11000, Y=2500. S1 has dropped to 5e-10 mbar.

Note Gleb mentioned that last night it was likely a large proportion of the ions stored were molecular hydrogen not deuterium.

16:18

Temps and system checks OK

Leakage current OK

Merger and tape server OK

18:10

Temps and system checks OK

Leakage current OK

Merger and tape server OK

19:38

Operators are trying to optimize some beam. For now the beam is lower than it should be probably because is easy to work with the source like that.

Temps and system checks OK

Leakage current OK

Merger and tape server OK

14:30

Run 11 started. D+ beam in the ring at 1.5 MeV.

No target at the moment. Valves to the interaction chamber will soon be opened.

Stats and histograms zero'd, monitoring code reset.

All checks and temps OK

Leakage currents OK

ADC data items statistics - attachment 1

Beam in ring ~30s and manipulation ~2s

Beam intensity ~ 5.7E7

16:40

System check OK

Temperature OK

Statistics same as before

Merger and server OK

Leakage currents OK

Beam in the ring

Waiting for target , Hydrogen green

18:50

System OK

Temperature OK

Statistics same as before

Merger and server OK

Leakage currents OK

Beam ~4x10^7

Target tuning ongoing

22:05

System OK

Temperature OK

Statistics same as before

Merger and server OK

Leakage currents OK

Currently no beam -> asked operator to check source

Target tuning ongoing

23:22

System OK

Temperature OK

Statistics same as before

Merger and server OK

Leakage currents OK

Currently no beam -> operators are optimizing the intensity of the beam

Optimizing target density as well

00:55

The overlaping test started by moving the beam only in the y axis.

02:00

Overlap test is over and was found that the optimal position for the horizontal axis is 8mm. Beam on target.

Observation of an increase the 1.5 MeV peak in the CARME monitoring code when overlap with the target is found. Attachment 4.

Drop in the beam lifetime is also observed when overlapped with the target.

System OK

Temperature OK

Statistics same as before

Merger and server OK

Leakage currents OK

02:48

CRYRING measurement cycle has been made shorter (from 5 to 3 repetitions) to match it with the decreased beam life time due to optimed overlap with target.

04:37

System OK

Temperature OK

Statistics same as before

Merger and server OK

Leakage currents OK

10:30

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

10.48 FEE64 temperatures OK - attachment 1

WR timestamps OK - attachment 2

ADC data item stats - attachment 3

per FEE64 Rate spectra - attachment 4

 why do we observe HEC data in aida15 asic #1?

per FEE64 1.8.L spectra - attachments 5-6

 ADC to 20MeV FSR - not clear when these spwectra were last zero;d

 currently 750keV/u D + no target ?

10.53 All histograms & stats zero'd

Merger, Taper Server etc - attachments 7-8

  bind error 98 for NewMerger server - not clear when these messahes were generated - added some returns to monitor whether these, or other, messages are repeated

DSSSD bias & leakage current OK - attachment 9

11:30

We noticed some odd peak structure in the rate energy histograms for the right hand side detectors. We took away the beam but this structure persisted. 

This was not observed in the total energy histograms, the reason for this is the applied multiplicity cut to the total histograms. Removing this cut the peaks are clearly visible (attachment 10). Putting the cut back in we see the peaks removed (attachment 11). These events correspond to some noisy strips on the detectors on the right hand side (see attachment 12). Notice the much larger rate on the RHS. Current ADC data items statistics show FEE modules for the RHS also much larger (attachment 13). We did not observe this with no beam (https://elog.ph.ed.ac.uk/CARME/554) but did with beam last night (https://elog.ph.ed.ac.uk/CARME/558) so there nust be some effect of having beam in the ring increasing the number of events on the RHS. Note the detectors are fully out and the events are localised in these strips. 

Note we have moved the detectorsand removed beam from the ring in this time period to investigate these peaks.

12:50

Run 10 continues. Temps OK. System checks OK. Merger OK, Tape server OK.

Leakage current OK.

Notice the 'beam peak' at 1.5 MeV is larger in the left hand side (attachment 14)

14:26

We have started the new_optimeren.py on pi@gas-stepper to try and align the gas target. Valves to the interaction chamber are closed.

Setting the nozzle X=-13000, Y=1000 we observe an increase in E4 from 4E-10 mbar to 2E-9 mbar. Moving either side we observe a drop in E4. We take this as the gas target being aligned.

Anton will now open the valves to the gas target.

Run 10 stopped.         

09:34 - Moved to Run 9 in preparation of moving detectors. No target yet. Beam in the ring at 750 keV/A.

Temperatures OK (attach)

System wide checks OK except 16 fails clock and ADC calib

Rates OK (attach)

Writing to disk OK (attach)

Resetting the sorting script. Moving detectors.

Moved detectors in. See attached. Stripe / shadow quite clear. Some oddities on the top-right DSSD. May be due to ExEy cuts and multiplicity cuts.

Moved on tun run 9 to acquire some stats without motion.

10:13 Temperatures still OK. Rates OK. Leakage currents stable.

We were cutting the beam.

Increased repetition to x5.

Motors fully out - run 10 started.

The cave is closed and beam is back

The d intensity is about half of the intensity before the break

The gas target is prepared but the valvas cannot be opened. Anton is coming in at around 1 PM to open the gate valves.

Nikos needs to enter the cave to work on the target cooling.

ADC offsets using pulser walkthrough data from data file APR24/R2

ch = channel + ( module * 64 ) + ( range * 2048 )

adc_data( ch ) = INT( RSHIFT( ABS( adc_data( ch ) - 32768 ), 3 ) - offset( ch ) + 0.5 )




per FEE64 ADC spectra - attachments 1-16

Note common x & y-scales - peak height proxy for peak width

aida01 1.8.L (s7) pulser peak width 9 ch FWHM (~50keV FWHM)




ADC offset analysis

/home/td/Calibration/offsets /home/td/CARME/R2 50 2048 20 5

First pass sort variables NAMELIST I/O format ( ADC offsets, FEE64 configuration, LEC & HEC equal energy cuts ) - attachment 17

18:19 Start or run 7: In beam has been optimzed up to now by Zoran and Claude. ~7E7 particles at injection. From now on, only the injection beamline is optimized by Operators.

Detectors IN (left arm pot =18.86 mm, right arm pot = 19.80 mm)

No Target

Beam is in the ring for ~6 seconds and total cycle time between injections is ~8 seconds

Injection beamline is still in process of optimization by operators

21:30

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

23:30

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

01:30

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Beam and Electron Coller failure (~00:35); Beam back (~01:08); Cooler back (~01:20)

03:00

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

Beam and Electron Coller failure (~01:35); Beam back (~01:55); Cooler back (~01:55)

04:40

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

06:00

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

07:00

Merger OK, Tape server OK

ADC data item statistics looks as before. OK

FEE temperatures look OK

System checks OK

Leakage current stable

09:00

R4 alpha background continues, currently R4_12

Temps OK, system checks unchanged from previous status (OK, aida16 clock and ADC issue)

10:30

R4 stopped and moved to the next run R5.

Lithium 3+ beam is not feasible at sufficient densities so we are switching to D+ at a beam energy of 0.75 MeV/u. A measurement of d+p at this energy would produce 3He at energies of ~900 keV. 

The current threshold (slow comparator) has been 1 MeV (0x64). We lowered the thresholds in all FEE modules to 200 keV (0x14). ADC rates look fine in all FEEs (~tens of Hz) except in aida 15 and aida 16 which was ~several hundred kHz. Data rate to disk was 1.2 Mb/s

We increased the threshold in aida 15 and 16 only to 500 keV (0x32) and rates in aida 15 and 16 have dropped to <20 kHz. Data rate to disk now 220 kB/s.

11:00

R5 stopped. R6 started - background with reduced thresholds. 

Attachment 1 - ADC data items statistics

Attachment 2 - Histogram browser statistics

Attachment 3 - Tape server

Attachment 4 - New Merger

13:12

R6 continues R6_9

Edits to the CARME sort code have been made. EyEx energy cut for online monitoring reduced to 100 keV. Multiplicity cut applies to lowEnergyEy, lowEnergyEx and lowEnergyXY histograms. Multiplicity cut considers only single strip events.

15:00

D+ beam is now in the ring and is being optimised by the beam operators. The CARME detectors are currently fullt out, but we can see some effects of the beam on the online monitoring code.

09:00

R4 alpha background continues, currently R4_12

Temps OK, system checks unchanged from previous status (OK, aida16 clock and ADC issue)

R3 started

Pulser ON. Approx 2 kHZ.

1.8*w waveforms attachments 1+2

ADC data items statistics - attchment 3

1.8*L spectra - attachments 4+5

Pulser widths are larger than during testing prior to the Feb beamtime. Widths in Channels;

aida01 = 76

aida02 = 82

aida03 = will upate all later tonight..

R3 ended. Pulser OFF

17:15

R4 Started. Alpha background run.

13.35 FEE64 temperatures OK - attachment 1

      ADC data item rates OK - attachment 2
       overall rate dominated by 2x hot channels aida15

     per FEE64 Stat spectra - attachment 3
      spectra consistent with April alpha background test 
      note high HEC data stats for aida12 asic#2 - can probably be fixed by ASIC control check

     per 1.8.W spectra - 20us FSR - attachments 4-5
      note 100kHz ripple observed for some FEE64s cf. https://elog.ph.ed.ac.uk/CARME/544

Run stopped 15:15 

27/05/24

The carme-gsi computer has been moved from the server room into the shifter control room.

Startup of the DAQ looks OK. Settings loaded 2024Apr24

System wide checks OK. Aida16 clock status fails. Aida16 ADC calibration fails. Rest OK.

All FEEs look OK, we again see high rates in aida15 ~ 12k data items/sec, rate in other FEEs is 0.

Testing of the pulser widths has been done. Pulser widths will be uploaded soon.

Background run started. No beam, no target. File G22-201 and R2. Data being written is ~128 kb/s. Run will be left overnight, no night shift.

28/05/24

DAQ continues with alpha background run.

System wide checks OK. Aida16 clock status fails. Aida16 ADC calibration fails. Rest OK. Temps OK

Data can be seen in the spectrum browser on MIDAS. CARME monitoring code was started incorrectly yesterday. It has now be restarted and a small number of events are seen

22.00

Carsten Brandau stopping e-target experiment Unattended beam overnight. No operators watching.

10^5 (nominal) 20Ne7+ at 380keV/u beam available

Carsten reports beam is unstable, often disappearing, and in bunched mode.

4x MSL type TTT14 DSSSDs not moving, locked in out position

Starting CARME MIDAS DAQ ASIC settings 2024Apr24-14.14.03

slow comparator 0x64 E

G&G Ortec 448 Pulser OFF

DSSSD bias & leakage currents - attachment 1

FEE64 temperatures OK - attachment 2

All system wide checks OK, WR timestamps OK - attachment 3

ADC data item stats - attachment 4

Rates dominated by two hot channels aida15 per FEE64 Stat spectra - attachment 5

per FEE64 1.8.L spectra - attachments 6-7 no obvious beam energy peak, continuum of energies from below beam energy to threshold

per FEE64 1.8.W spectra - attachments 8-9

22.55 Start data file APR24/R5 Merger, TapeServer etc - attachments 10-12

270k data items/s

23:29 Activated CARMESort script. See attachments 13-15.

No obvious beam or signal of any kind. Temperatures OK.

00:13 DAQ continues OK. System-wide check OK. Temps OK. Still no clear sign of beam.

01:03 Daq continues OK. System wide checks OK, Temps OK.

Only low energies observed in the energy spectrum. Looks a bit like the low energy noise observed in our previous runs with no/very few counts above what would be beam energy (~7.6 MeV)

Note the xy plots are not all orientated correctly (strips are correct in the sort code but root axis need to be flipped - I can;t remember how atm). The part of the plots with counts are those closest to the beam. 

02:00 DAQ continues OK. System wide checks OK. Temps OK.

Spectra still looks the same. I have noticed the right hand side rate is higher than the left. EyEx cut spectrum also looks like much more counts outside of the cut.

03:40

DAQ continues. All checks and temps OK.

I can now see a small peak at 5 MeV in the bottom left dssd. This dssd also has the least number of counts in the low energy continuum.

I have logged back into grafana on x2go to get the number ions in the ring. Attachment 17

04:23 (05:23 EU)

DAQ stopped, merger stopped, tape server stopped. Bias OFF. FEEs turned OFF. Screen shots taken of the monitoring code plots - not yet uploaded.

Windows and servers remain up in case we want to do some more tests in the near future.

Attachment 18 shows beam intensity for total run time from Grafana

00.09 DAQ continues data file R3_21

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temps OK - attachment 2

      ADC data item stats OK - attachment 3

      per FEE64 Rate spectra - attachment 4

      Merger, TapeServer etc - attachments 5-7

04.50 DAQ continues data file R3_22

      DSSSD bias & leakage current OK - attachment 8

      FEE64 temps OK - attachment 9

      ADC data item stats OK - attachment 10

      per FEE64 Rate spectra - attachment 11

      Merger, TapeServer etc - attachments 12-14


09.41 DAQ continues data file R3_23

      DSSSD bias & leakage current OK - attachment 15

      FEE64 temps OK - attachment 16

      ADC data item stats OK - attachment 17

      per FEE64 Rate spectra - attachment 18

      Merger, TapeServer etc - attachments 19-21


09.43 DAQ stopped
      DSSSD bias OFF
      FEE64 power OFF

00.12 DAQ continues data file R3_15

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temps OK - attachment 2

      ADC data item stats OK - attachment 3

      per FEE64 Rate spectra - attachment 4

      Merger, TapeServer etc - attachments 5-7


05.32 DAQ continues data file R3_16

      DSSSD bias & leakage current OK - attachment 8

      FEE64 temps OK - attachment 9

      ADC data item stats OK - attachment 10

      per FEE64 Rate spectra - attachment 11

      Merger, TapeServer etc - attachments 12-14

11.27 DAQ continues data file R3_17

      DSSSD bias & leakage current OK - attachment 15

      FEE64 temps OK - attachment 16

      ADC data item stats OK - attachment 17

      per FEE64 Rate spectra - attachment 21

      Merger, TapeServer etc - attachments 18-20

11.33 aida16 asic #2 2x Check ASIC control
      aida16 asic #4 2x Check ASIC control


18.53 DAQ continues data file R3_19

      DSSSD bias & leakage current OK - attachment 22

      FEE64 temps OK - attachment 23

      ADC data item stats OK - attachment 24

      per FEE64 Rate spectra - attachment 25

      Merger, TapeServer etc - attachments 26-28

      per FEE64 1.8.H - attachments 29-30

      per FEE64 1.8.L - attachments 31-32

      per FEE64 1.8.W - 20us FSR - attachments 33-36

19.10 CRYRING ambient temperature per https://web-docs.gsi.de/~lestinsk/tempplot.php - attachment 37

00.34 DAQ continues data file R3_9

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temps OK - attachment 2

      ADC data item stats OK - attachment 3

      per FEE64 Rate spectra - attachment 4

      Merger, TapeServer etc - attachments 5-7

06.41 DAQ continues data file R3_10

      DSSSD bias & leakage current OK - attachment 8

      FEE64 temps OK - attachment 9

      ADC data item stats OK - attachment 10

      per FEE64 Rate spectra - attachment 11

      Merger, TapeServer etc - attachments 12-14


10.56 DAQ continues data file R3_11

      DSSSD bias & leakage current OK - attachment 15

      FEE64 temps OK - attachment 16

      ADC data item stats OK - attachment 17

      per FEE64 Rate spectra - attachment 18

      Merger, TapeServer etc - attachments 19-21

14.33 DAQ continues data file R3_12

      DSSSD bias & leakage current OK - attachment 22

      FEE64 temps OK - attachment 23

      ADC data item stats OK - attachment 24

      per FEE64 Rate spectra - attachment 25

      Merger, TapeServer etc - attachments 26-28

18.31 DAQ continues data file R3_13

      DSSSD bias & leakage current OK - attachment 29

      FEE64 temps OK - attachment 30

      ADC data item stats OK - attachment 31

      per FEE64 Rate spectra - attachment 32

      per FEE64 1.8.L spectra - attachments 33-34

      Merger, TapeServer etc - attachments 35-37

08.02 DAQ continues data file R1_14

      DSSSD bias & leakage current OK - attachment 1

      FEE64 temps OK - attachment 2

      ADC data item stats OK - attachment 3

      per FEE64 Rate spectra - attachment 4 

      Merger, TapeServer etc - attachments 5-7

10.40 Close file R1 and open file R2

      Switch on pulser (relay line 50Hz)

      per FEE64 Rate spectra - attachment 8

      Check ASIC load x2 for aida09, aida10, aida12, aida15  aida16

      per FEE64 Rate spectra - attachment 12
       status quo ante

      Pulser walkthrough 

      Pulser settings per https://elog.ph.ed.ac.uk/CARME/544
      Amplituides 70,000-10,000 @ 10,000 step

      per FEE64 1.8.L spectra - attachments 9-10
 
      per FEE64 Rate spectra - attachment 11

11.05 Pulser OFF
      Close file R2, open file R3

      zero all histograms  stats

      background alpha run continues


20.33 DAQ continues data file R3_8

      DSSSD bias & leakage current OK - attachment 13

      FEE64 temps OK - attachment 14

      ADC data item stats OK - attachment 15

      per FEE64 Rate spectra - attachment 16

      Merger, TapeServer etc - attachments 1-19


      CAEN data log stopped 00:21 Friday 26 April 

pi@nnrpi1:~/Programs/caenlogger $ caenlogger --config caenlogger_config_gsi.toml
2024-04-25 15:25:16.194 | INFO     | caenlogger.__main__:main:117 - Config file provided.
Traceback (most recent call last):
  File "/home/pi/.local/bin/caenlogger", line 10, in <module>
    sys.exit(main())
  File "/home/pi/.local/lib/python3.7/site-packages/caenlogger/__main__.py", line 135, in main
    curses.wrapper(process, config_dic)
  File "/usr/lib/python3.7/curses/__init__.py", line 94, in wrapper
    return func(stdscr, *args, **kwds)
  File "/home/pi/.local/lib/python3.7/site-packages/caenlogger/__main__.py", line 57, in process
    Vmon = [ f for f in HV[5].strip().split("  ") if f ]
IndexError: list index out of range

     Old log gzip'd and moved to directory ~/logs

[npg@carme-gsi ~]$ mv caen_current.dat.gz logs/0031260424-caen_current.dat.gz

20.45 Restarted logger program

03.27 DAQ continues - file APR24/R1_7

      DSSSD bias & leakage current OK - attachment 1
      ambient temperature 16.1 deg C

      FEE64 temperatures OK - attachment 2

      ADC data item stats OK - attachment 3

      per n+n FEE64 1.8.L spectra - attachment 4

      per FEE64 Stat spectra - attachment 5

      Merger, TapeServer etc - attachments 6-8


10.19 DAQ continues - file APR24/R1_8

      DSSSD bias & leakage current OK - attachment 9
      ambient temperature 16.2 deg C

      FEE64 temperatures OK - attachment 10

      ADC data item stats OK - attachment 11

      per FEE64 Stat spectra - attachment 12

      Merger, TapeServer etc - attachments 13-15

      NetVar merge variables - attachment 16


14.44 DAQ continues - file APR24/R1_10

      DSSSD bias & leakage current OK - attachment 17
      ambient temperature 16.5 deg C

      FEE64 temperatures OK - attachment 18

      ADC data item stats OK - attachment 19

      per FEE64 Stat spectra - attachment 20
       some HEC data has appeared

      Merger, TapeServer etc - attachments 21-23

19.12 DAQ continues - file APR24/R1_11

      DSSSD bias & leakage current OK - attachment 24
      ambient temperature 16.5 deg C

      FEE64 temperatures OK - attachment 25

      ADC data item stats OK - attachment 26

      per FEE64 Stat spectra - attachment 27

      per FEE64 1.8.L spectra - attachments 28-29

      Merger, TapeServer etc - attachments 30-32

23.14 DAQ continues - file APR24/R1_12

      DSSSD bias & leakage current OK - attachment 33
      ambient temperature 16.1 deg C

      FEE64 temperatures OK - attachment 34

      ADC data item stats OK - attachment 35

      per FEE64 Stat spectra - attachment 36

      Merger, TapeServer etc - attachments 37-39

Have observed some instances of poor CARME cable management/routing
Attachment 1 - SAES D-2000 ion pump HV cable (netal braid) transiting FEE64 cabling
Attachment 2 - CARME motor controller cable (grey plastic) transiting FEE64 cabling

General check and tidying up required.

      Replace AIDA ASIC mezzanine of aida01

13.43 DSSSD bias & leakage current OK - attachment 1
      ambient temperature 16.5 deg C

      FEE64 temperatures OK - attachment 2

      All system wide checks OK 

      WR timestamps OK - attachment 3

      ADC data item stats OK - attachment 4

      per FEE64 Rate spectra - attachment 5
       c. 10 strips (of 1024) not producing data
       most missing strips are from aida05 - misaligned or damaged adaptor PCB?

      per p+n FEE64 1.8.L spectra - attachment 6
       aida01 pulser peak width 75 ch FWHM
       common x/y scale => peak height proxy for peak width

      per n+n FEE64 1.8.L spectra - attachment 7
       aida01 pulser peak width 70 ch FWHM

      per FEE64 1.8.W spectra - 20us FSR - attachments 8-11

Summary

All FEE64s appear to be working (except aida05 which has c. 8 missing channels) with pulser - which 
validates the FEE64, ASICs and adaptor PCB.

Electronic noise c. 50keV FWHM for aida01 & aida03 - other FEE64s better/worse.

Preamplifier noise appears to be similar for all FEE64s which may suggest an issue with the test signal chain

Note
1) e-target is starting up
2) have identified some instances of poor CARME cable management/routing see https://elog.ph.ed.ac.uk/CARME/545



EG&G Ortec 448 Pulser
Amplitude 50,000
Normalise 5.00
x5 attenuator IN
t_r 100ns
tau_d 50us
Polarity +
Frequency relay line (50Hz)

Cooknell SA1 Summing Amplifier
inverted output to test - daisy chain

Current ASIC settings saved to 2024Apr24-14.14.03


14.48 Pulser OFF
 
      All histograms & stats zero'd

      LEC slow comparator 0x64 -> 0xff
      HEC fast comparator 0x2 -> 0x5

      background alpha run to validate signal path from DSSSD to FEE64 adaptor PCB

22.18 Start Merger & TapeServer - attachments 12-14

      DSSSD bias & leakage current OK - attachment 21
      ambient temperature 16.0 deg C


      FEE64 temperatures OK - attachment 15

      WR timestamps OK - attachment 16

      ADC data item stats OK - attachment 17

      per FEE64 Rate spectra - attachment 18

      per p+n FEE64 1.8.L spectra - attachments 19-20

18.43 ASIC settings 2024Feb08-15.59.09

aida06 pulser peak width 66 ch FWHM

03.45




10.01 




10.05 DSSSD bias OFF
      FEE64 power OFF

14.30 


       per FEE64 1.8.L spectra
        aida11 pulser peak width 52 ch FWHM



14.45 EG&G Ortec 448 Pulser OFF

      all stats & histograms zero'd
 
      alpha background


22.00 DSSSD bias and leakage current OK - attachment 10

      FEE64 temperatures OK - attachment 11

      ADC data item stats - attachment 12

      per FEE64 Stat spectra - attachment 13
       Comparison of attachment 9 (per FEE64 Rate spectra with pulser) indicates significant issues (downstream of adaptor PCB) for DSSSD #1
       Possible issues asics #3 aida01 and possible adaptor PCB misalignment aida05

Courtesy Nik Kurz, JG has installed a PEXARIA5 PCIe card adjacent to CARME - BuTIS single-mode fibre input
and HDMI output to root MACB input for distribution to the other MACBs and FEE64s.

The PEXARIA5 card provides equivalent functionality to the VETAR2 VME module that we have used to date. 

Further information https://www.gsi.de/fileadmin/EE/Module/EXPLODER/pexaria5_14.pdf 

Cooling water ON 

Via Anydesk startup MIDAS and FEE64s

Power ON
DSSSD HV OFF ( not required for WR test )

FEE64 temperatures OK - attachment 1

All system wide checks OK

Info code 4 & 5 stats OK - attachments 2 & 3

10:48:46 WR timestamps OK - attachment 4

         Timestamp (ns) converted to (s) corresponds to 09.49.22 GMT 6.3.24 which appears to be correct

11.00 Power OFF

10.54 23.2.24 Bias OFF

CARME DAQ shutdown. FEEs turned OFF and all MIDAS server windows closed.

Detector bias turned OFF.

Final leakage current plot - attachment 1

Doing afternoon check. Checked the leakage currents, all ok. Attachment 1

Temperatures ok, attchment 2

System wide check, all correct.

Statistics ok (as far as we can tell) attachment 3

Spectrum browser ok, attachment 4

Checked merger, spinner spinning...

Beam current is around 2.2 E7 and the target dencity is 6.3E11 cm2.

Doing morning check. Checked the leakage currents, all ok. Attachment 1

Temperatures ok, attchment 2

System wide check, all correct.

Statistics ok (as far as we can tell) attachment 3

Spectrum browser ok, attachment 4

Checked merger, spinner spinning...

Attachment 5 shows the BPM scope (i.e. induced signals from the ion buchnes) for the duration of injection, bunching, acceleration, debunching.

Beam current is around 2.5E7 and the target dencity is 6.3E11 cm2.

Run 48 started

We have mosty empty injections into CRYRING. Only sporadically the beam with good intensity is injected.

Michael Lestinsky is currently working on the problem.

DAQ restarted. Run46. All appears OK, aida01 shows high rates across ASIC 4 even with no beam which could not be resolved via ASIC control. May suggest some damge.

Merger is running and tape server is writing data to disk. Data rate is about 1300 kB/sec from 800 kb/sec due to increase in aida01 rate.

FEE temps OK

All system checks OK

Detectors moved to IN position (left arm pot = 36.5 mm, right arm =70.49 mm). Target ON.

Lost beam again.

Run 47 started.

09:43

Run 44 started cooled beam on target

Detectors IN (left arm pot =36.5 mm, right arm pot = 70.49 mm). Stationary. Same as previous runs

Electron cooler voltage 751.4 V this corresponds to 1.3436 MeV/u. This should be back on the peak of the resonance.

Target density is 5.2e11 at/cm2, ring pressure looks OK YR09 1.72e-10 mbar. Target density is not very stable and requires small corrections in the x position to maintain a target

Horizontal beam position is -7.5 mm, vertical beam position is 0.0 mm. Same as previous run

Beam is in the ring for 6 seconds and total cycle time between injections is 10 seconds. Notice this is different than previous runs. Aim is to have a few different cycle time configurations to see effect on halo

Statistics, merger statistics, histograms all zero'd

10:05

FEE temps OK

System checks OK

Merger OK, tape server OK

Leakage current plot attachment 1

ADC data items stats attachment 2

Monitoring code rates attachment 3

11:08

FEE temps OK

System checks OK

Merger OK, tape server OK

Leakage current OK

ADC data items stats OK

Online spectra OK

12:30

FEE temps OK

System checks OK

Merger OK, tape server OK

Leakage current OK

ADC data items stats OK

Online spectra OK

14:03

FEE temps OK

System checks OK

Merger OK, tape server OK

Leakage current OK

ADC data items stats OK

Online spectra OK

15:36

FEE temps OK, system checks OK, merger OK,

Screenshot 4: temperatures

Screenshot 5: statistics

Screenhot 6 - 9: spectra (there is a persistent peak in aida13 in Layout8)

Screenshot 10: leakage current (current 1 seems to be going up slowly but steadily)

Screenshot 11: spectrum

17:18

FEE temps OK, system checks OK, merger OK,

Screenshot 12: temperatures

Screenshot 13: statistics

Screenhot 14 - 17: spectra (we still see a peak in aida13 in Layout8, but not always)

Screenshot 18: leakage current (current 1 seems to be going up slowly but steadily)

Screenshot 19: spectrum

19:27

FEE temps OK, system checks OK, merger OK,

Screenshot 20: temperatures

Screenshot 21: statistics

Screenhot 22 - 25: spectra (we still see a peak in aida13 in Layout8, but not always)

Screenshot 26: leakage current (current 1 seems to be going up slowly but steadily)

Screenshot 27: spectrum

21:57

FEE temps OK, system checks OK, merger OK,

Screenshot 28: temperatures

Screenshot 29: statistics

Screenhot 30 - 33: spectra (we still see a peak in aida13 in Layout8, but not always)

Screenshot 34: leakage current

Screenshot 35: spectrum

07:00

Observed reduction in YR09 presure over last few hours in ML online plot. Beam intensity looks OK but target density was fluctuating quite a lot. Current value was 1.5e11.

Changed the nozzle position slightly which increased target density to 5.5e11. Pressure in YR09 looks OK.

I accidently scrolled slightly with the target code (only by 100 but am not sure). Target looks stable but I will not touch remotely again for fear of losing total target position.

Rates in ADC data items statistics and in the monitoring code look consistent with beam on target. 

08:56

Target density reduced again to 1.5e11. Changed the nozzle position slightly in X and recovered 5.5e11 at/cm2

Beam intensity looks OK

FEE temps OK

System checks OK

Merger and tape server OK

Statistics ADC data items and spectrum browser rates OK

Merger stats attachement 5

leakage current plot attachment 6

Online monitoring code rates OK

09:33

Run stopped to change beam energy

06.03 DAQ continues file G22-86/R42_32

      DSSSD bias & leakage current - attachments 1-2
       DSSSD #0 trending upwards , DSSSD #1-3 trending downwards with decreasing ambient temperature

      FEE64 temperatures OK - attachments 3-4

      ADC data item stats - attachment 5

      per FEE64 Rate spectra - attachments 6

      target density 5.27e+11/cm2
      beam stable for last 3 hours ( cannot read scale with X2Go )

23.03 DAQ continues file G22-86/R42_21

      ML CRYRING ambient temperature and vacuum - attachments 1 & 2

      DSSSD bias & leakage current - attachments 3 & 24
       DSSSD #0 trending upwards , DSSSD #1-3 trending downwards with decreasing ambient temperature

      FEE64 temperatures OK - attachments 4-5

23.07 All system wide checks OK

      WR timestamps OK - attachment 6

      ADC, DISC, PAUSE and correlation stats OK - attachments 7-10

      per FEE64 Rate spectra - attachments 11-12
      per FEE64 Stat spectra - attachments 13-14

      per FEE64 1.8.L, 1.8.H and 1.8.W 20us FSR spectra - attachments 15-20

      Merger, Merger stats and TapeServer OK - attachments 21-23

      online analysis spectra - attachments 25-30

23.28 all histograms, stats, Merger stats zero'd
      online analysis restarted

23.35 target density 5.83e+11/cm2
      beam no change in last 3 hours ( cannot read scale with X2Go )
      see attachments 31-33


00.58 DAQ continues file G22-86/R42_24

      DSSSD bias & leakage current - attachments 34-35
       DSSSD #0 trending upwards , DSSSD #1-3 trending downwards with decreasing ambient temperature

      FEE64 temperatures OK - attachments 36-37

      ADC data item stats - attachment 38

      per FEE64 Rate spectra - attachments 39

      target density 5.75e+11/cm2
      beam no change in last 3 hours ( cannot read scale with X2Go )


03.14 DAQ continues file G22-86/R42_28

      DSSSD bias & leakage current - attachments 40-41
       DSSSD #0 trending upwards , DSSSD #1-3 trending downwards with decreasing ambient temperature

      FEE64 temperatures OK - attachments 42-43

      ADC data item stats - attachment 44

      per FEE64 Rate spectra - attachments 45

      target density 5.91e+11/cm2
      beam decreased in last 3 hours ( cannot read scale with X2Go )
      see attachments 46-47

03:30 beam recovered
      online analysis rates DSSSD#0 recovered to values observed at start of shift

Run 42 - 15:00

Detectors IN (left arm pot =36.54 mm, right arm pot = 70.49 mm). Stationary. Same as run 40

Electron cooler voltage 751.89 V this corresponds to 1.3444 MeV/u. This should be on the right of the peak of the resonance.

Target density is 5.03e11 at/cm2, ring pressure looks OK YR09 2.36e-10 mbar.

Horizontal beam position is -7.5 mm, vertical beam position is 0.0 mm. Same as run 40.

Beam is in the ring for 4 seconds and total cycle time between injections is 8 seconds. Notice this is the samet as run 40, different to run 35.

Statistics, merger statistics, histograms all zero'd

System wide checks ok. Temperatures ok. Leakage current ok. Merger ok.

Attatchment 1: Stats

Attatchment 2: Temperatures

Attatchments 3-6: Waveforms

Attatchment 7:Leakage current

Attatchment 8: Monitoring code rates

15.35 DSSSD #0 leakage current trending somewhat upwards cf. somewhat downwards for DSSSD #1-3

          ML CRYRING hall ambient temprature c. 17.7. deg C and on downward trend.

         Probably indicates radiation damage/surface charging of DSSSD #0 - leave DSSSD #0 biased for 24-48h following run and monitor leakage current

15:46

Seeing some beam intensity drops occasionally. Small drop that instantamnously went back up around 15:20 and then stbale beam unitl around 15:44 and then two small-time beam drops within 2 minutes. See attatchment 9. Continuing to monitor. Target density remains stable at 5e11.

16:45

Beam dropping again and continuing to drop  (began at 16:35). Target density 4.7e11. Called HKR and they will try to increase the intensity. See attatchment 10.

17:00

System checks ok. Temperatures ok. Leakage current plot okay. Merger ok. Beam intensity still reduced to same amount as in attatchment 10). Target density approx 5e11.

Attatchment 1:1 Stats

Attatchment 12: Temperatures

Attatchments 13-16: Waveforms

Attatchment 17:Leakage current

Attatchment 18: Monitoring code rates

17:10

HKR cryring asked for target to be removed to check intensity. Target was removed.

17:17

Target back in, intensity back to around 2.5e7. Stable. Target desity 5e11.

18:42

All system checks and tempeatures ok. Beam stable. Target 2.3e11.

Leakage current: red line still trending upwards but slowly. See image 24.

10:30

Beam went down about 21:45. Called HKR and they were able to almost immediately restore the beam. Beam intensity ~2.5e7.

Target density 5.6e11 at/cm2, pressure in YR09 ~2.5e-10 mbar.

FEE temps and system check OK

Merger and tape server OK

Merger stats (attachment 25)

All rates in spectrum browser look OK

Monitoring code rates indicate beam on target.

DSSSD 0 aida01 1*L spectra, aida04 **L spectra

Double peak structure feature of aida04 ( n+n Ohmic side ) strips. Single ( albeit sometimes broad peak ) observed in aida01 ( p+n junction side ) strips.
Not currently observed by DSSSD 1-3. DSSSD 0 high energy peak rate far higher than DSSSD 1-3.

Data from last week did not display this double peak but DSSSDs and beam have been moved since.

Unclear whether this reflects radiation damage and/or wafer/active area edge effects on the n+n side.
Might also reflect beam characteristics throughout cycle.

Requires calibration and dE cut to investigate.

JM comment -> early time cut analysis indicates this is a beam effect. DSSD#0 has majority of halo on it so double peak is very pronounced. 
We observe double peak all DSSDs just to a much lower level. 

08:57 Doing morning check. Checked the leakage currents, all ok. Attachment 1

Tempritures of, attchment 2

System wide check, all correct.

Statistics ok, aida 4 was a little high, carlo oked it attachment 3 and 4 (hist)

Spectrum brozer, ok, attachment 5 and 6

Waveforem atachment 7 and 8

Checked merger, spinner spinning...

Attached screenshot of merger  9

11:15 Beam current is around 2.5E7 and the target dencity is 5.3E11 cm2, there was small isntability (dips) from the beam, reason unknown, all detectors stable.

Check leakage current, is stable,  attachment 1

Tempreture ok, attachment 2

System wide check, all pass

Statistics checked, attachment 3, aida 4 is still high, histograms attachment 4

Spectrum browser ok, attachment 5 and 6

Waveforms attachment 7 and 8

Checked merger, ok, spinner is spinning,

Attachment 9 is the merger info

12:21 Targer intencity started dropping quite dramatically. The beam position X value was adjusted to -11000, we got back above 4E11 /cm2

13:08 Beam current is around 2.5E7 pretty stable, target is working, 61E11 /cm2, stable

Checked leakage current, stable, attachment 1

Temp. stable, atatchment 2

System wide chack, all pass

Statistics checked, attachemnt 3, aida 4 should be checked, histogram of rates 4 attached

Spectrum browser, attached 5 and 6

Waveform attached 7 and 8

Merger ok, spinner is pinning,

Attached 9 merger info

01:17

Run 40 continues.

Beam intensity looks OK. Oscillates between just below 2.5e7 and just below 3e7. (attachment 1)

Target density 4.3e11, YR09 pressure 1.54e-10 mbar.

Rates in monitoring code show beam on target.

FEE temperatures all OK - plot over time (attachment 2)

System check OK

Leakage current OK -trending down (attachment 3)

Tape server and merger OK. Merger stats (attachment 4)

ADC data items looks OK, spectrum browser rates OK

Spectrum browser stat (attachment 7 LOG scale) - looks like some HEC were firing previously. Spec browser histograms zero'd to monitor

pn + nn waveforms (attachments 5+6)

Monitoring code energy histograms (attachment 8)

02:40

X2go screen size has decreased further -> cannot see target density but can view beam intensity. Will use ML vac plot to help gauge beam on target

Beam intensity has decreased over the last hour but has now stabilised and is now ~2e7 at injection. Pressure in YR09 has decreased slightly accordingly from ML online but not significantly (still >1e-10 mbar)

Monitoring code rate plots indicate beam on target

All daq checks OK

Will continue to monitor beam intensity

04:14

Ring intensity has increased and appears stable back at 2.5e7.

Target density has slightly decreased to 3e11, ring pressure YR09 stable at 1.5e-10 mbar. I am reluctant to try and move the nozzle while my x2go screen is not 100%.

FEE temps OK

System checks OK

Merger and tape server OK

Rates in all FEEs look OK

Spectrum browser stats (attchment 9) no HEC firing

Monitoring code rates look OK -> beam on target (attachment 10)

05:14

Beam intensity looks OK, Target density 3.11e11. Ring pressure YR09 2e-10 mbar.

All checks OK

Monitoring code rate looks OK -> beam on target

06:20

Beam intensity OK, Target density 3.1e11. Pressure YR09 1.9e-10 mbar.

FEE temps OK

System checks OK

Statistics and rates of all FEEs OK

Merger and Tape server OK

Monitoring code rates look OK -> beam on target

Merger statistics (attachment 11)

7:15

Beam intensity 2E7, target density getting bad 2eE11. WIll fix it from the lab.

FEE temps OK

System checks OK

Merger OK

Stats OK

15:27

Run 40 started cooled beam on target

Detectors IN (left arm pot =36.5 mm, right arm pot = 70.49 mm). Stationary. Same as run 35

Electron cooler voltage 751.095 this corresponds to 1.338 MeV/u. This should be on the left of the peak of the resonance.

Target density is 4e11 at/cm2, ring pressure looks OK YR09 1.43e-10 mbar.

Horizontal beam position is -7.5 mm, vertical beam position is 0.0 mm. Same as run 35.

Beam is in the ring for 4 seconds and total cycle time between injections is 8 seconds. Notice this is different than run 35.

Statistics, merger statistics, histograms all zero'd

15:39

System wide checks ok. Merger ok. Temperatures ok.

Attatchment 1: statistics

Attatchment 2: Temperatures

Attatchment 3-6: Waveforms. Layout 2 - (attach 4) had a strnageish waveform for aida11, stays after reload.It was the HEC firing so did an ASIC control and Zero'd histograms and all is okay.

Attatchment 7: Leakage current

17:04

System wide checks ok. Merger ok. Temperatures ok. The beam is on target and everything runs smoothly.

Attatchment 8: statistics

Attatchment 9: Temperatures

Attatchment 10-13: Waveforms. Everything looks ok.

Attatchment 14: Leakage current

18:55

System wide checks ok. Merger ok. Temperatures ok. The beam is on target and everything runs smoothly.

Beam transformer shows a small decrease in beam intensity, not drastic but small slow decrease, see attachment 22. Target density 4e11. Vacuum pressue ok.

Attatchment 15: Statistics

Attatchment 16: Temperatures

Attatchment 17-20: Waveforms

Attatchment 21: Leakage current

19:28

Run40 - Beam dropped intesntiy at 19:17, moved detectors out, called gleb. Beam intensity started increasing again - not sure whats happenig at present (see image 23). 

20:26

Around 19:50 beam decreased again and stayed down for a while. Beam not stable. Gleb was called, target turned off, beam restabilied - around 2.5e7 ish. Unsure if it will remain stable during the night (image 24).

20:35

detectors moved back in. Target back in, stable at 4e11.

Potentiometer Left: 36.54 mm

Potentiometer Right: 70.49 mm

Beam stable at the moment (image 25).

System checks 20:40

   
             Base         Current         Difference
aida03 fault      0x0 :      0x1 :      1  
aida04 fault      0x0 :      0x1 :      1  
aida05 fault      0x0 :      0x1 :      1  
aida06 fault      0x0 :      0x1 :      1  
aida07 fault      0x0 :      0x1 :      1  
aida08 fault      0xe :      0xf :      1  
aida09 fault      0xb :      0xc :      1  
aida10 fault      0x0 :      0x1 :      1  
aida13 fault      0x0 :      0x1 :      1  
aida14 fault      0x0 :      0x1 :      1  
FPGA Timestamp error counter test result: Passed 6, Failed 10
If any of these counts are reported as in error
The ASIC readout system has detected a timeslip.
That is the timestamp read from the time FIFO is not younger than the last

System wide checks ok except the FPGA timestamps - see error above - collected them and it went away. Merger ok. Temperatures ok. The beam is on target and everything runs smoothly for now.

Attatchment 26: Temperatures

Attatchment 27-30: Waveforms

Attatchment 31: Leakage current

21:50

FEE temperatures OK

System wide checks OK

Statistics and spectrum browser rate look OK

Merger and tape server OK

Monitoring code rates are consistent with beam on target

X2go seems to not be loading full screen for me - may be my laptop misbehaving?

Can see ring intensity has been stable for the last hour, target density is 4.33e11 and YR09 pressure is 1-2e-10 mbar.

23:22

Target density 4.3e11, beam intensity stable.

Monitoring code rates are consistent with beam on target

Fee temps all OK

System checks OK

Statistics and FEErates OK.

Merger and tape server OK

14:01

Run 36 started.

We put both detectors to the fully out position. Detectors then driven IN using the pnuematic motor only once the beam is ready and driven fully out before beam dumping.

We notice the right arm is significantly slower than the left arm and does not manage to go fully out before being told to go back in. This is not ideal.

Run stopped.

14:10

Run 37 started

Right arm is positioned at pot = 70.49 and remains stationary. The left arm is moved with the ring cycle. When IN left arm pot = 62.71 mm. When out left arm pot = 18.89 mm

Movement signals are being saved to jan MBS system and can be used to seperate out injection periods on other runs where both detectors will be stationary.

All beam and target settings are the same as for Run 35.

Spectrum browser rates for each FEE when left arm IN shown in (attachment 1). Rates dependent on beam cycle, when detectors move out, rates in left arm drop significantly as expected.

XY and energy histogram plots from monitoring code (attachments 2+3)

We see the Rutherford much more well defined on the bottom left detector now (it is further in and halo effect is reduced). Still some low energy counts (may be due to detector movement -> need to test without beam)

Top left detector energy histogram looks a lot different, still much halo effect.

we will collect some stats for 30 mins or so

14:57

Run 37 Stopped. Run 38 started.

Faraday cup to the ring closed. No beam in the ring. Left arm of the detectors still moving IN and out of the beam with the ring cycle.

Very little counts observed in energy spectra.

15:02

Run 38 stopped so Gleb can change the beam energy. Run 39 started.

07:10

FEE temperatures OK

System checks OK
Merger and tape server OK
Statistics look OK,
Rates in the detectors from the mointoring code indicate we have beam on target.

Detector leakge current appears to be following same pattern as yesterday -> temperature (attachment 1)

Merger stats (attachment 2) - quite a few more pause / resume statements than normal - noise last night?

Target density appears stable over the last 3 hours ~3.8e11 at/cm2, ring pressure stable YR09 ~1.5e-10 mbar

Beam injection looks stable over the last few hours.

09:08

FEE temperatures OK -aida03 and aida09 0.5 C over 65C warning.

system checks OK

ADC data item stats  OK

Spectrum browser rate (attachment 3)

Merger and Tape server OK

Monitoring  xy and energy histograms since zero'd last night (attachments 4+5)

Target density slight drop to ~3.5e11 at/cm2. Pressure in the ring stable. CB attempting to optimise target density and ring pressure.

Beam injection into the ring still good

11:04

FEE temperatures OK

System checks OK

ADC data items and spectrum browser rates OK

Target density ~4.6e11 at/cm2, ring pressure looks OK ~1e-10 mbar

Beam injection still good.

Merger and tape server OK

12:45

Beam injection over last 2 hours has been stable

Target density 4.75e11 and stable. ring pressures are stable.

FEE temperatures OK

System checks OK

ADC data items stats and spectrum browser rates look OK

Merger and tape server OK

14:01

We wish to test the beam ahlo on injection so are ending run

Run stopped.

22.51 DAQ continues file G22-86/R35_36

      DSSSD bias OK - attachments 1-2

      FEE64 temperatures - attachments 3-4
      CRYRING hall ambient temperature 20
      FEE64 temps tracking ambient temperature - aida01, aida03, aida09 and aida15 - all ( just ) over 65 deg C

      All system wide checks OK

      WR timestamps OK - attachment 5

      ADC, DISC and PAUSE data item stats - attachments 6-8
       hot channels aida01 ( 91k ), aida04 ( 12k ), aida15 ( 11k ) 

      per FEE64 Rate spectra - attachments 9-10
       aida04 & aida13 only FEE64s with significant rates and systematic rate variation with channel #

      per FEE64 1.8.L, 1.8.H and 1.8.W 20us FSR spectra - attachments 11-16

      Merger, Merger stats and TapeServer OK - attachments 17-19

23.16 All histograms, stats and merger stats zero'd

      Online analysis spectra - attachments 21-26
       only the inner quadrants of the 4x DSSSDs are correctly mapped - attachment 21
       observe double peak structure in DSSSD0 rate spectra - radiation damage most forward lab angle strips? - attachment 24

23.23 restart online analysis - zero spectra

23.30 YR12DTIC 2.5e7/s
      YR09 vacuum 7e-11 - 1.2e-10 mbar
      density 4e11/cm2
      See attachments 27-34



01.30 DAQ continues file G22-86/R35_39

      FEE64 temperatures - attachments 35-36

      ADC data item stats - attachment 37

      DSSSD leakage currents - attachment 38

      YR12DTIC 2.5e7/s
      YR09 vacuum 7e-11 - 1.2e-10 mbar
      density 4.1e11/cm2


03.05 YR12DTIC 2.2e7/s
      YR09 vacuum 7e-11 - 1.2e-10 mbar
      density 3.5e11/cm2

      DAQ continues file G22-86/R35_42

      DSSSD leakage currents - attachment 39

      FEE64 temperatures - attachments 40-41

      ADC data item stats - attachment 42

05.05 DAQ continues file G22-86/R35_47

      YR12DTIC 2.5e7/s
      density 3.8e11/cm2

      DAQ continues file G22-86/R35_42

      DSSSD leakage currents - attachment 43

      FEE64 temperatures - attachments 44-45

      ADC data item stats - attachment 46

      per FEE64 Rate spectra - attachments 47-48
       aida12 asic #1 and # 2 HEC activity 
       and following Check ASIC load aida12

      ADC data item stats - attachment 49


Shift Summary

Beam, target density and vacuum appear to have been stable overnight

FEE64 temperatures continue to cycle

Evidence of some radiation damage DSSSDD 0 presumably for most forward lab angle strips?

aida12 asic #1 and #2 high rate HEC activity - fixed by ASIC check load

11:01

Run 35 started cooled beam on target

Detectors IN (left arm pot =36.5 mm, right arm pot = 70.49 mm)

Electron cooler voltage 751.4 this corresponds to 1.3436 MeV/u. This should be on the peak of the resonance.

Target density is 3.75e11 at/cm2, ring pressure looks OK YR09 1.43e-10 mbar.

Horizontal beam position is -7.5 mm, vertical beam position is 0.0 mm. Same as run 33.

Beam is in the ring for 8 seconds and total cycle time between injections is 12 seconds. Same as run 33

Beam injection looks stable. ~2e7 injected and no missed injections so far.

Merger OK, Tape server OK

Merger statistics zero'd

All histograms and statistics zero'd, monitoring code reset.

ADC data item statistics looks as before, very few counts until injection into the ring. OK

FEE temperatures look OK

System checks OK

Leakage current trending upwards, same as previous elog.

13:33

FEE temperatures OK - all FEEs at least 1.5C below vertex warning

ADC data items statistics OK

Merger and Tape server OK

Target density 3.8e11 at/cm2, ring pressure stable.

Ring injections look very stable

Leakage current now decreasing (attachment 1)

Monitoring code xy and energy histograms (attachment 2+3)

15:03

System wide checks ok. Merger ok. Temperatures ok.

Attatchment 4: Stats

Attatchment 5: Temperatures

Attatchments 6-9: Waveforms.

Attatchment 10: Leakage current

Attatchment 11: lowenergyEytotal plots

17:09

System wide check ok. Merger ok. Temperature ok.

Attachment 12: Stats

Attachment 13: Temperatures

Attachment 14-18: Waveforms (Layout 7: strange behaviour in aida01, went to ASIC Control and did "Check ASIC control" three times, which resolved the problem)

Attachment 19: Leakage current

Attachment 20: lowenergyEytotal plots

Gas pressure was going up a little bit: changed Y position of the nozzle from 1000 to 950.

17:55

The gas jet target pressure started to fall sharply at 17:34 and went down to zero within 2 minutes.

It came back while it we were changing the nozzle position but at 17:49 fell to zero again.

Currently waiting for Nikos to came and have look at it.

18:10

Target back in place and has a density of 4.04e11. Beam transformer looks similar to pre plummeting target density.

18.55 Check ASIC load FEE64 aida16 asic#3 HEC channels active

 Following check load merger rate decreased significantly.

19:14

Gas density remains stable around 4e11 after the incident at 17:34 and the beam transformer singal looks ok too. Gas pressure ok.

Merger: All aidas turn green but the merger has decreased significantly (too about 306 000 items/sec) as mentioned above.

System wide check ok. Temperature ok.

Attachment 21: Stats

Attachment 22: Temperatures

Attachment 23-26: Waveforms

Attachment 27: Leakage current

22:27

Run 33 started cooled beam on target.

Detectors IN (left arm pot =36.5 mm, right arm pot = 70.49 mm)

Electron cooler voltage 754.945 this corresponds to 1.3499 MeV/u. This is above the resonance of interest but cooler settings cannot be altered without major beam tuning.

Target density is 4.1e11 at/cm2, ring pressure looks OK YR09 1.2e-10 mbar.

Horizontal beam position is -7.5 mm, vertical beam position is now 0.0 mm. This results in no beam halo in bottom left detector which should be good for seeing Rutherford.

Beam is in the ring for 8 seconds and total cycle time between injections is 12 seconds

FEE temperatures are OK. 3 FEEs are slightly too. (attachment 1)

System checks are OK.

Statistics look OK. High in the top left detector which is expected as majority of halo is there. (attachment 2+3)

Merger OK Tape server OK - 851 kB/s

Merger statistics (attachment 4)

Leakage current is increasing but is likely temperature related. ML temp plot has same pattern and it is a WARM day. (attachment 5)

Monitoring code - xy plot and Ey energy histograms (attachment 6+7). Rutherford rate looks higher -> looking peaky

00:14

System checks all OK

FEE temperatures unchanged. Tom has now set up plotting of aida09 fee temperatures in the second workspace.

Merger OK, tape server OK.

Target density remains about 4.1e11 at/cm2. Ring pressure ~1e-10 mbar. YR08 read close to 1e-9 but beam is able to circulate in the ring so will not change for now.

Rate statistics in all FEEs remain unchanged.

02:10

System checks OK

FEE temperatures unchanged

Merger OK

Target density OK. Ring pressure not great but cannot change remotely due to script not in screen and poor coding.

Beam stil on.

Leakage current trending up.

04.00 FEE64 temperatures - attachments 10-11

          aida09 ( and other FEE64s ) on downward trend

          CRYRING hall temperature - attachment 12

05:00

Ring pressure worsening and target getting thinner (4E11). Tweak nozzle when in the lab physically.

Beam still on around 3E7

Temperatures & Leakage currents OK. Same trends

Merger continues OK

Stats OK

System wide checks OK

07:00

Fee temperatures have reduced - all green

System check OK

ADC data items statistics unchanged. 

Merger and tape server OK

Leakage current plot (attachment 15)
monitoring  plots - xy plot and EY energy histogram (attachment 16+17 )

Pressure has dropped slightly over the last hour, target density remains stable 4.2e11. Beam transformer has dropped off in the last hour -> less beam target interactions -> lower pressure?

We still see count rates in the detectors.

08:18

Inconsistent beam into the ring continues. HKR are aware.

Temperatures OK

System checks OK

10:00

Beam is much more consistent now. We observe vast majority of shots injected into the ring and corresponding rate increase in the detectors via the monitoring code.

FEE temperatures OK

System wide checks OK

Merger and tape server OK

New merger stats (attachment 18)

ADC data item statistics OK

Leakage current plot (attachment 19)

Attachments 20+21: Cooler settings before and after changing to the new beam energy of 1.3435 MeV/u (copy from GSI olog)

10:24

Run33 stopped. Run 34 started. Changing beam energy to be on resonance.

Detectors moved fully out. Target moved out

Final spectrum browser stat for all FEEs before run ended (attachment 22)

We are running an MBS DAQ to record the attached list of slow control values of the ring and the target. In most cases this is achieved by converting analog monitor voltages to frequencies and recording them with a VME scaler (VULOM4B with scaler-firmware). The complete list of signals is attached including a channel mapping.

!! Target values are currently not provided, we can only record ring/cooler values !!

We do a scaler readout with a 1Hz trigger rate right now. This can be changed. This generates events with trigger number 1.

Additionally, we receive triggers from motor movement (trigger 2 & trigger 3) and from target ON and target OFF (trigger 12 & trigger 13).

Each event of any trigger type is WR timestamped.

There  is also a Go4 configured for online monitoring.

Details below. Or contact Jan Glorius.

----------------------------------------

Basic info and how-to for MBS

----------------------------------------

linux-user: cry_exp

VME CPU: r4l-58

DAQ PC: atppc025

data storage:  lxg1275:/data.local2/2024_CRYRING_16O_jet

The DAQ is running in a screen session "target_DAQ" on atppc025. Enter by typing

> screen -x "target_DAQ"

SSH connections to r4l-58 are active in tabs 0 and 1. Type [ctrl]+[a] then [x] to switch to tab x. 

If the SSH connection is lost type

> ssh cry_exp@r4l-58

> cd /esr/usr/cry_exp/2024_CRYRING_jet/mbs

MBS is running in tab 1. If it has an error, type [ctrl]+[z] to exit MBS, then

> resl

> mbs

mbs> @startup

mbs> @connect

to start a new file recording type

mbs> @runstart

If an error occures during @runstart, try @connect again.

Inside MBS you monitoring options:

mbs> show acq   (will show you trigger and data rates and status)

mbs> show file    (will show you the file status)

mbs> type ev -v 10    (will display 10 subsequent events from the data stream)

The trigger rate is currently 1Hz.

The trigger logic and setup in configured in /esr/usr/cry_exp/2024_CRYRING_jet/mbs/jet.trlo

-----------------------

Go4 monitoring

-----------------------

Go4 is running on atppc025 in the directory /u/cry_exp/Beamtimes/202402_O2+/go4_target

From this directory you can run it by typing

> go4 monitoring.hotstart

Run started 13:40

Target density 4.3e11, Beam injection is ~1e7, Pressure in the ring is ~1e-10 mbar.

Detectors have been moved IN with servo motors only (left arm pot = 36.5 mm, right arm pot =37.7 mm

Time between injections is 12 seconds. Beam is in the ring for 3 seconds of the cycle.

System wide checks OK

Temperatures OK

Leakage current plot attached -> temperature fluctuations (attachment 1)

ADC data items stats (attachment 2)

Merger and tape server OK

All histograms and statistics zero'd

14:17

Cave access required. No beam

15:24

No beam. System wide checks ok. Merger ok.

Attatchment 3: stats

Attatchment 4: Temperatures generally okay, 3 were red before reload, one red after reload.

Attatchment 5-8: Waveforms. Layout 7 and 8 look different from yesterday, consistnely different after several reloads.

Attatchment 9: Leakage current

Attatchment 10: LOWENERGYEXEY PLOTS

17:12

Tunning beam. System wide checks ok. Merger ok.

Attatchment 11: stats

Attatchment 12: Temperatures generally okay, 3 were red reloaed and stayed red but not so high.

Attatchment 13-16: Waveforms. Were the same as previous check.

Attatchment 17: Leakage current. They are tunning the beam so its a little bit changed.

19:28

Still hvae unstable noncooled beam, currently being worked on.

Tunning beam. System wide checks ok. Merger ok.

Attatchment 18: Temperatures generally okay, 3 were red reloaed and stayed red but not so high and were slighlty dicrease.

Attatchment 19-22: Waveforms. Were the same as previous check.

Attatchment 23: Leakage current. Slowly increasing from last check in, highest its been but conditions are not great at the moment.

21:10

We did not have any update about the beam. They still work on it.

Tunning beam. System wide checks ok. Merger ok. Stats were ok.

Attatchment 24: Temperatures generally okay, Same 3 were red and they increased a little bit. Nothing too concerning.

Attatchment 25-28: Waveforms. Were the same as previous check.

Attatchment 29: Leakage current. Contining to increase by small amount from last check.

11:27

Run 29 started. Beam energy is 1.3435 MeV/u with a cooler voltage of 751.3 V.

We observe significantly greater count rate for top right detector (DSSD#1) now that the beam energy has been lowered. ADC over range? Beam target overlap change?

Plan to check optimisation of beam-target overlap and beam settings again.

12:40

Beam lost. Detectors out. R29_11

13:37

Electron cooler is not working again. We will have un-cooled beam again.

Will start a new run 30 for un-cooled beam on target.

Beam energy - 1.361 MeV/u

17:12

Run 28 Started - beam on target

Detectors IN (left arm pot = 36.5 mm, right arm pot = 70.5 mm)

Beam position (vertical offset -9mm, horizontal offset -7.5mm)

Ions circulate in the ring for 3 seconds before they are dumped. Total time between injections is 12 seconds.

Target density apporx 4.2e11 atoms/cm2, pressures in the ring are below 1e-10 mbar. (Attachment 1+2)

Leakage current plot (attachment 3) - change in leakage current is consistent with temperature variation from ML online plot.

18:18

FEE temperatures OK - aida09 is slightly hot - 65.06 C so slightly above vertex temp value of 65C and stays this way over several reloads (attachment 4)

System wide checks OK

Statistics (attachments 5+6) - aida09 and aida12 slightly high stats but still <1K. Check load does not resolve.

Tape server OK - writing ~730 kB/sec

Merger OK

Monitoring code XY plots and Ey energy histograms (attachments 7+8)

18:53 All checks OK

21:58

All system checks ok. Temperatures and leakage current ok. Merger ok.

Attatchment 9: Rates and stats - all below 1k

Attatchment 10: Temperatures

Attatchment 11-14: Waveforms layouts 1,2,7,8 respectively look okay

Attatchment 15: Leakge current

Attatchment 16: lowenergyXY plots

Vacuum pressure is ok.

23:01

system wide checks ok. Temperatures ok. Leakage current ok. Merger ok all went green. Waveforms same as 10pm check.

Statistics - aida09 and aida12 went over 1k (attach 17), but reloaded and settled down again seconds appart (attatch 18). Reloaded again at 23:14 and stats were aove 1k again (attatch 19).

Attatchment 20 is the leakage current, still ok. 

Vacuum pressure ok (attatchment 21) - rises after small bump down from the regular value.

01:00

System wide checks ok. Temperatures ok. Leakage current ok (see attatchment 22). Merger ok all went green. Waveforms the same as 10pm check.

Statistics - aida09 and aida12 occasionally just over 1k when reloading a few times, but goes below mostly.

Vacuum pressure ok, stablised after small bump around 10ish (attatchment 23)

03:00

Ring vacuum suffered from long-term creep, especially in YR08. Tweaked nozzle position. Pressure improves, target density slightly affected. Attachment 24-25

Leakage current and temperature indicate we have an increase in temperature in the ring. This is confirmed by vacplot. Attachment 26-27

Merger continues OK 28

Rates and Stats show we have no beam. Going to the lab 29-30.

R28_22 NO BEAM

03:45

No beam in the ring, we are missing all the spills. Called HKR.

Detectors out in case beam manipulation is required.

Stat plot looked OK. 31

04:35

DAQ continues OK on run R28_24, still no beam

Temperatures slightly lower - OK

System wide checks - OK

Stats - OK

Merger - OK

05:44

Beam is back. It had been away since 1:30 am due to a fault in the new EC power supply. Fault reason unclear.

Detectors back in (left 36.54, right 70.49 mm)

R28_26 BEAM ON

(Beam likely off from R28_ 21-25 inclusive)

Temps as before

Stats now OK - att 32

Merger OK - att 33, 34

Stat spectra OK - att 35. Note slope in ASICS (Rutherford?)

Leakage current trending up - likely temperature related.

Ring pressure OK

Gas target 4.14E11

Beam at injection around 7.5E6. Could be higher. Asked for optimisation later today assuming current configuration holds.

06:59

Temperatures OK

System checks OK

Stats looking good in all FEEs except aida01 and aida15

Leakage current has levelled off - looks OK

Ring pressure looks OK and is trending down - target density 4.1e11

Merger and tape server OK

08:30

System checks all OK

Temperatures OK

Merger / tape server OK - data being written R28_29

Target density 4.1e11, ring pressure stable

09:00

Attachment 38 Spectrum browser stats for all FEEs (log scale)

Attachment 39-42 Spectrum browser *L histograms for select channels for each detector. MIDAS data is consistent with inline monitoring plots.

System checks OK

Beam still on - target density and ring pressure remain stable

11:28 We have access to the voltage dividers for the electron cooler. The voltage is -763.625 V. This corresponds to an electron energy of 746.795 eV and a beam energy of 1.361 MeV/u  using ML ion calc.

This is above the resonance energy of 1.3435 MeV/u. We will now end the run and set the cooler voltage to this ion energy.

Run ended. Run 29 started while setting beam energy.

Run 27 Started to check optimsation of the beam - target overlap.

Beam intensity at injection is roughly 1e7 particles

Target density apporx 4.2e11 atoms/cm2 and stable.

Ring pressure is below 1e-10 mbar for all ring sections and stable

First optimisation procedure was to vary the horizontal beam position and see the effect on the count rate in detector #0 (top left) (see elog 509). Beam position was scanned from -9 and -4. Attachment 1 shows the maximum in count rate around the -7.5 position. 

Second optimisation procedure was to change the time ions are allowed to circulate in the ring before being dumped. The count rate over 5 minutes in detector #0 (top left) at ~20 MeV was used as a gauge. This is the only part of the cycle we can control.

Time (s)    Counts

2               148

3               200

4               178

15:06
Run25

Pulser walkthrough

EGG Ortec 448 Pulser

Amplitide 90,000-10,000 @ 10,000 step
Normalise 5.0
Attenuators x5 IN
t_r 100ns
Tau_d 50us
Frequency Int Osc 50Hz
Polarity + ( - polarity via Cooknell SA1 Sum & Invert Amp )

Run number changed 09:44 - Now run 23

Moving motors with the injection

Ring signal very weird, moving in for short time and staying out for 15+ seconds.

R24

Right arm FULLY in (70.49 mm)

Left arm SERVOS ONLY in (36.54)

No appreciable effect on beam (not clipping beam at injection / during circulation)

ML fixed signal cycle. It's now 8 seconds in, 5 seconds out. Motors still not moving. Acquiring more stats in the current conditions.

11:07 - Temps & System wide checks good

Stats as before.

Leakage currents & pressure good.

11:44

Leakage current ok. pressure good. Temperatures ok. Merger ok. System wide checks ok.

In with the left 36.5

In with the right 70.5

Attatchment 1: Rates

Attatchment 2: Temperatures

Attatchment 3: Waveforms layout 7

Attatchment 4: Waveforms layout 8

Attatchment 5: Waveforms layout 1

Attatchment 6: Waveforms layout 2

Attatchment 7: Leakage current

Attatchment 8: lowenergyXYtotal all 4 dets

Attatchment 9: lowenergyExEy all dets

Attatchment 10: loveenergyvExEy

Attachment 11: screenshot from the Shottky

14:00 Run 24 stopped to allow access to the cave.

Helium and liquid nitrogen re-filled in the target.

Pulser walkthrough performed R25.

Turned CARME turbo ON, pressure in the ring with target on is reduced by a factor 2.

Tried to find electron cooler voltages to determine the beam energy. We were unable to do this. Hopefully we find out tomorrow. 

18:05 We believe we have an overlap between the beam and the target. Run 22 started.

          CARME detectors in with the servo ONLY. Left arm pot 36.5 mm, right arm pot 37.7 mm

          Target density apporx 2e11 atoms/cm2.

          Shots into the rin partially stable (sometimes consecutive injections at high intensity, sometime apporx 1 in 4 fail rate).

          We plan beam run overnight, remote shifters will check on the progress every 2 hours.

18:32

Everything ok. Temperatures and leakage current are okay.

Attachment 1: Rates

Attachment 2: Temperatures

Attachment 3: Waveforms layout 7

Attachment 4: Waveforms layout 8

Attachment 5: Waveforms layout 1

Attachment 6: Waveforms layout 2

Attachment 7: Leakage current

Attachment 8: xy plot for all four detectors.

21:00 Checks made, everything okay!

23:00 Checks made, everything okay!

Attachment 9: Rates

Attachment 10: Temperatures

Attachment 11: Waveforms layout 1

Attachment 12: Waveforms layout 2

Attachment 13: Waveforms layout 7

Attachment 14: Waveforms layout 8

Attachment 15: Leakage current

14.02.2023 01:00

Checks made, everything okay!

Attachment 16: Waveforms layout 1

Attachment 17: Waveforms layout 2

Attachment 18: Waveforms layout 7

Attachment 19: Waveforms layout 8

Attachment 20: Rates

Attachment 21: Temperatures

Attachment 22: Leakage current

02:27

FEE temperatures OK

System checks OK

ADC data items appears ok for all FEEs, except aoda09 shows rates of ~1kHz. Spectrum borwser shows this is from a single strip. Checl load aida09 several times but no change to the rate.

Leakage current appears fine. (Attachment 23)

Merger and tape server OK

Ring pressure appeared to have dropped and the target density had dropped to approx 5e10 at/cm2 range. Target nozzle moved 200 steps. Density back to 2.5e11 range and pressure is high -11 low -10 mbar range. <----- Operator mistake

XY plot all detector (attachment 24)

EyTotal all detectors (attachment 25)

05:08

Target density appears to have been very stable over the last few hours ~2e11 at/cm2. Ring pressure also appears stable.

FEE temperatures OK

System checks OK

ADC data items appears ok for all FEEs,Aida09 rate appears to be reduced again.

Leakage current appears fine.

Spectrum browser rates (attachment 26)

Spectrum browser stats (attachment 27)

Spectrum browser 1.8*L pn (attachment 28)

Spectrum browser 1.8*L nn (attachment 29)

New merger stats (attachment 30)

I am not confident we are seeing significant Rutherford scattering accumalated so far.

07:18

FEE temperatures OK

System checks OK

Stats OK

Leakage current appears fine.

Spectrum browser rates OK

Spectrum browser stats OK

Spectrum browser 1.8*L OK

Spectrum browser 1.8*L nn OK

New merger stats OK

7:40

Noticed operator mistake at 3 am. Ring pressure was very bad in YR08. Unlikely we had much beam since then. Moved nozzle to improve pressure.

See attach 38 & 39.

08:51

Checks all ok. Temperatures and leakage current ok. Merger ok. 

Attatchment 40: Rates

Attatchment 41: Temperatures

Attatchment 42: Waveforms layout 7

Attatchment 43: Waveforms layout 8

Attahcment 44: Waveforms layout 1

Attatchment 45: Waveforms layout 2

Attatchment 46: Leakage current

Attatchment 47: Gasjet board - not much change from last check

Attatchment 48: Vacuum pressures 

Check the status of the DAQ system, with Tom. All correct. See attachments:

1 Leackage currents

2 ADC data item stats

3 White rabbit time stamps

Note: At 9:36 we thing they are working on cooling the beam, there is no target and the detectors are fully out.

9:16 cooled beam, carlo is starting new run r21

Target dencity = 1.47E11 atom/cm2 (10:30 am)

Horizon Y09 from 9 mm to 8 mm, checking different beam position (10:55 am)

Right arm is fully in (11:02 am)

By moving in the detector we are reducing the intencity (11:04 am)

Right numatic out, right servo in, potentiiometer at 38.38 mm (11:05 am)

Losing every second shot, tuning the numatic to get better parameters, beam tuning  (11:13 am)

Leaving the detectors out while going for lunch, still beam (11:42 am)

12.23 Both detectors 37mm in ( DSSSD wafer edge c. 5cm from beam axis )

System Wide Checks Update - Run 21

Temperatures ok, leakage current ok

AIDA16 said that there was an FPGA timestamp error, collected again and now all passed - timestamps on merger statistics page all good when checked

Attatchment 4: Temperatures

Attatchment 5: Waveforms layout 7

Attatchment 6: Waveforms layout 8

Attatchment 7: Wavforms layout 2

Attatchment 8: Waveforms layout 1

Attatchment 9: Leakage current ok

16:11 Both detectors 37mm in ( DSSSD wafer edge c. 5cm from beam axis ), target off, beam being tuned, what ever, still run 21

System Wide Checks Update - Run 21

Temperatures ok, leakage current ok

18:00 Run 21 contd. We have spent the afternoon trying to confirm whether we observe an overlap between the target and the beam. We varied the horizontal beam position and used the top left detector around 19-20 MeV region as a gauge for the count rate.

          This should be reasonably safe as the beam halo in this detector is primarily at low energies. We took the count rate over 10 shots into the ring as our gauge. Attached is a plot of the results of varying the beam position. Target density and gas pressure was apporximately constant throughout.

          We estimate -7 mm is the correct horiziontal beam position. We also had a call off Zoran while at this setting as he observed a decrease in the beam lifetime which was observed in HKR. See attached plot of the scan (attachment 10)

02.35 DAQ continues file G22-88/R17_30

02.38 Check ASIC load
      aida01 asics # 1 and #4 & aida12 asic #2 HEC events removed



09.05 DAQ continues file G22-88/R17_53
      DSSSD bias & leakage current OK - attachments 10-11

      FEE64 temperatures OK - attachment 12

      ADC data item stats OK - attachment 13
       hot channels aida01 ( 67k ) and aida15 ( 7k )

      WR timestamps OK - attachment 14

      per FEE64 Rate and Stat spectra - attachments 15-16

      Merger, Merger stats and TapeServer - attachments 17-19

09.19 New run G22-88/R18
      all histograms & stats zero'd

      CB starting up 4He target preparatory to returning 16O2+ beam to CRYRING

      L & R arms all out

09.26 4He target c. 2e11c.2
      16O2+ beam c. 3e5/s

09.58 4He target c. 3e11/cm2
      16O2+ beam c. 5e5/s at start of cycle
      See attachments 20-22

10.40 New run G22-88/R19
      all histograms & stats zero'd

      CB will attempt to steer the beam 
      all steering options set to 0mm except YR09 target offset (vertical = -9mm) and (horizontal = 9mm) 


10.52 R arm fully in, L arm fully out
      beam steering hard right

14:24 Frank has informed us that the CRYRING team will be examining the electron cooler for th enext few hours. Run 19 stopped, Run 20 started. 
      Detectors moved fully out, target OFF. 
      All histograms and stats zero'd
      Access to the cave is required, beam OFF

15:45 Channel 1 back to 150V.


17.40 DAQ continues file G22-88/R20_13
      DSSSD bias & leakage current OK - attachments 23-24

      FEE64 temperatures OK - attachment 25

      All system wide checks OK except aida08 FPGA error - attachment 26

      WR timestamps OK - attachment 27

      ADC data item stats OK - attachment 28
       hot channels aida01 ( 80k ) and aida15 ( 7k )

      per FEE64 Rate and Stat spectra - attachments 29-30

      Merger, Merger stats and TapeServer - attachments 31-32

23.12 DAQ continues file G22-88/R20_20
      DSSSD bias & leakage current OK - attachments 33-34

      FEE64 temperatures OK

      All system wide checks OK except aida08 FPGA error - attachment 35

      WR timestamps OK - attachment 36

      ADC data item stats OK - attachment 37
       hot channels aida01 ( 80k ) and aida15 ( 7k )

      per FEE64 Rate and Stat spectra - attachments 38

      Merger, Merger stats and TapeServer - attachments 39-40



03.47 DAQ continues file G22-88/R20_28

      DSSSD bias & leakage current OK - attachments 41-42

      FEE64 temperatures OK - attachment 43

      ADC data item stats - attachment 44
       aida12 rate - HEC events 

      per FEE64 Rate spectra - attachment 45

      Check ASIC load 

      ADC data item stats - attachment 46

      per FEE64 Rate spectra - attachment 47

      Merger, Merger stats and TapeServer - attachments 48-49





      

13:37 Run started - no beam in the ring (One of the ring magnets was still on RED when it should have been set to green by HKR)

14:28 Beam ON - still observe beam halo on DSSD0 (Top left)

          YR09 Vertical and horizontal offsets set to -9.0 mm

14:36 Target ON, Beam ON

         We can see the beam halo on the detectors again in the same position as previous tests. The energy histograms for the detectors show only low energy events, except bottom left detector where we see a peak around 20 MeV. With the target on we see additional events but we only see events at ~20MeV for the    bottom detector still in the bottom left detector. We are moving the detectors IN to try and see events from scattering of the beam on the target. We may not be hitting the target with the beam.

15.29  We observe data in DSSD # 0, 2, 3 (top left, bottom left, bottom right) which is consistent with a line beam halo on the detector. The top right detector is positioned higher by ~10 mm than the top left detector so it is not unphysical to not see any events in this detector from the halo.

           The energy of events in each detector is not consistent however. In DSSD #0 and 3 we see mainly low energy events (some small number of 20 MeV events is seen) but in DSSD #2 we see mainly higher energy (20 MeV) events. See attached energy histograms, xy and Ex vs x plots (attachments 1-3).

          This is consistent with the data from channels seen in MIDAS for aida04 (DSSD #0) and aida12 (DSSD#2).

          Switched FEE64 range bit frpom 20MeV FSR to 1GeV FSR to see if any events are over the 20 MeV range of the low energy channel . Slow comparator from 0x64 to 0x5. We see no events just above 20 MeV  in aida04 but do in aida12. See attachments 4 & 5

          No data ( > 20MeV nominal ) out of range in DSSSD #1

         FEE range set back to FSR to 20 MeV and slow comparator set back to 0x64

15:57  Beam on target. Left arm fully out (pot 18.8 mm), right arm fully in (pot 83.69 mm). Beam injection ~1e6, target density 2e11. Cycle time between 4-13 s.

        Leaving for more stats

17.30 Routine system checks

         DAQ continues file G22-88/R16_14

        DSSSD bias and leakage current OK - attachments 8 & 28

         DSSSD #2 bias -100V, all other DSSSDs -150V

         ambient temperature +17.0 deg C

      FEE64 temperatures OK - attachment 9

      All system wide checks OK

      WR timestamp OK - attachment 10

      aida01 & aida03 ASIC settings - attachments 11-12

      AIDA ADC, PAUSE, DISC, correlation - attachments 13-16

        ADC data item rates OK

     per FEE64 Rate spectra - attachments 17-18

      note change in rates for aida12 & aida13 - presumably due to beam cycle?

    per FEE64 1.8.L, 1.8.H and 1.8.W 20us FSR spectra - attachments 19-24

    Merger, Merger stats and TapeServer - attachments 25-27

18.10 ML CRYRING vacuum - attachment 29

FEE spectrum browser statistics attachment 30 - not many missing channels - aida04 asic 2 perhaps?

18:40 End of run. Target x position moved out by 3000. Faraday cup to the ring closed. Detectors moved fully OUT.

Run 17 started - alpha background

02.02 DAQ continues G22-86/R15_21
      alpha background

      DSSSD leakage current = attachment 1
       DSSSD #2 transient c. few hundred nA continue

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3
       rates dominated by 'hot' channels aida01 ( 70k ) and aida15 ( 11k ) - all other FEE64s c. 0Hz

      per FEE64 Rate and Stat spectra - attachments 4-5

02.07 All stats zero'd 


05.52 DAQ continues G22-86/R15_28
      alpha background

      FEE64 temperatures OK - attachment 6

      ADC data item stats - attachment 7
       rates dominated by 'hot' channels aida01 ( 72k ), aida15 ( 11k ), aida12 ( 3k ) and aida05 ( 600 )
       all other FEE64s c. 0Hz

      per FEE64 Stat spectra - attachment 8
       aida12 asic #2 HEC channels high rate

      Merger and TapeServer - attachments 9-10

      DSSSD leakage current = attachment 11
       DSSSD #2 transient c. few hundred nA continue

      online per DSSSD 2D x-y spectra - attachnent 12

05.56 All histograms & stats zero'd
      2x Check ASIC load

      ADC data item stats - attachment 7
       rates dominated by 'hot' channels aida01 ( 72k ), aida15 ( 11k )
       all other FEE64s c. 0Hz

10:28 DAQ continues G22-88/R15

      FEE temperatures OK

      ADC data items stats dominated by aida01 (86k) and aida15 (9k) rest of stats approx OHz. 
      Rates dominated by 2 hot channels per FEE 
      Leakage current plot (attachment 15)
      System wide checks OK
      Merger OK (500,000 items per sec), Tape server OK (710 kb/sec being written)
      DSSD XY plot (attachment 16) - some noise coming through in certain strips on DSSD 3
      DSSD Ey energy histograms (attachment 17)
      DSSD Ey vs Ex plots (attachment 18)     -  statistics for DSSD0,1,3 are consistent (DSSD 2 stats appear higher - unknown reason as yet)

11:10 Leakage current for DSSD1 (I2 on leakage current plot) remained 'turbulent'. We dropped the voltage from 150V to 100V. Leakage current dropped from ~4.5uA to ~4.2 uA. We will see if it remains more stable. 
      Rates in DSSD1 increased during change in voltage so all histograms were zero'd and monitoring code reset. Transient also observed for I3 in the leake current plot (attachment 19)

12:10 No progress on the target so far ...
      Noticed in aida03 and aida04 several missing channels in the stats spectrum browser (attachment 20)
      ASIC check load several times on aida03 and aida04. All stats and histograms zero'd 

13.37 Target now available - will attempt beam + target
      New data file G22-88/R16

13.39 per FEE64 Stat spectra

13.43 All histograms and stats zero'd

      multiple channels missing aida03 and aida04 ( and possibly other FEE64s too )

17.55 DAQ continues G22-86/R15_11
      alpha background

      DSSSD bias OK - attachment 1
       ambient temperature 17.0 deg C

      FEE64 temperatures OK - attachment 2

      WR timestamps OK - attachment 3

      ADC data item stats - attachment 4
       rates dominated by 'hot' channels aida01 ( 85k ) and aida15 ( 11k ) - all other FEE64s c. 0Hz
       stats zero'd 17.57

      per FEE64 Rate & Stat spectra - attachments 5-6
       Stat spectra not zero'd recently - evidence of scattering ( rates varies with strip # )?

      aida01 ( p+n ) and aida03 ( n+n ) ASIC settings - attachments 7-8
       slow comparator 0x64

      Merger and Merger stats OK - attachments 9-10

      DSSSD leakage current = attachment 11
       shows data for 28-30.1.24 ?

      online sort per DSSSD x-y hit patterns - attachment 12

      ML vacuum pressure & cave temperature - attachments 13-14

23.01 DAQ continues G22-86/R15_17
      alpha background

      DSSSD bias OK - attachment 15
       ambient temperature 17.0 deg C

      FEE64 temperatures OK - attachment 16

      ADC data item stats - attachment 17
       rates dominated by 'hot' channels aida01 ( 72k ) and aida15 ( 11k ) - all other FEE64s c. 0Hz

      TapeServer - attachment 18

      DSSSD leakage current = attachment 19
       DSSSD #2 transient c. few hundred nA

      online sort per DSSSD x-y hit patterns - attachment 20

System checks: all ok

Attatchment 1: Rates ok

Attatchment 2: Temperatures ok

Attatchment 3: Waveform layout 7

Attatchment 4: Waveform layout 8

Attatchment 5: Waveform layout 1

Attatchment 6: Waveform layout 2

Attatchment 7: Leakage current ok

Moved pneumatic / servo for right / left arms in /out

Attachment 8: left servo fully in

9: left pneumatic in (beam is clipped)

10: left pneumatic & servo in (beam is clipped)

11: right servo in

12: right pneumatic in

13: right pneumatic & serve in

Some clear issues with strip mapping persist.

Strip map

#map strip: 01:00 left/top side, 02:00 right/bottom side (from beam view)            
stripMap    1    2                                            
stripMap    2    1                                            
stripMap    3    2                                            
stripMap    4    1                                            
stripMap    5    2
stripMap    6    1
stripMap    7    2
stripMap    8    1
stripMap    9    1
stripMap    10    2
stripMap    11    1
stripMap    12    2
stripMap    13    1
stripMap    14    2
stripMap    15    1
stripMap    16    2  

/////// UPDATE /////////

System checks: all ok - except waveform for AIDA 15 in layout 2, it has a low rate compared to others

Attatchment 14: Rates ok

Attatchment 15: Temperatures ok

Attatchment 16: Waveform layout 7

Attatchment 17: Waveform layout 8

Attatchment 18: Waveform layout 2

Attatchment 19: Waveform layout 1

Attatchment 20: Leakage current ok

/////// UPDATE //////

After beam stiring - layout of xy histograms are updated

DSSD0 and DSSD3 have the correct orientation,

DSSD1 needs to be flipped mirrored on the yaxis (i.e. right needs to be left, and left needs to be right but up and down are correct)

DSSD2 needs to be flipped on the xaxis (i.e. up needs to be down and down needs to be up but left and right are correct)

Horizontal offset in YR3 target = 9mm

Horizontal offset in YR7 target = 9mm

Horizontan offset in YR9 target = -9mm

Vertial offset in YR9 target = -8mm

Attatchment 21: Beam profile before stiring

Attatchment 22: Beam profile after stiritng - much better, hitting detectors less.

/// UPDATE ///

Mapping for the sort code has been fixed so that detectors are orientated correctly as if looking at the detectors downstream.We was missing dssdPNisX command which lets the sort code know if the PN FEEs correspond to X or Y. Correct mapping is now;

       
stripMap    1    1                                            
stripMap    2    2                                            
stripMap    3    1                                            
stripMap    4    2                                            
stripMap    5    1
stripMap    6    2
stripMap    7    2
stripMap    8    1
stripMap    9    2
stripMap    10    1
stripMap    11    1
stripMap    12    2
stripMap    13    1
stripMap    14    2
stripMap    15    1
stripMap    16    2   

12.46 DAQ continues G22-88/R10_14

      c. 20MeV 16O2+ + 4He 

      DSSSD bias OK - attachment 1
      ambient temperature 17.7 deg C ( c. 1deg C increase cf. earlier this week )

      FEE64 temperatures OK - attachment 2

      All system wide checks OK
      WR timestamp control OK - attachment 3

      ADC data item stats - attachment 4
      FEE64 rates c. 0Hz except 'hot' channels aida01 ( 71k ) and aida15 ( 8k )

      per FEE64 Rate and Stat spectra - attachments 5-8
       events ( beam? ) aida01 asic #4 and aida04 asic #4 ( c. 200k per ASIC channel )
       
      per FEE64 1.8.L spectra - attachments 9-10
       most spectra showing background and, possibly, a small amount of scattered beam?

      per FEE64 1.8.W spectra - 20us FSR - attachments 11-12

      aida04 3*L and 4*L spectra - attachments 13-15
       distribution by strip # - uniform across asic# #4, continuing across asic #3 with abrupt fall off c. channel 9
       not Rutherford - more consistent halo/beam scattering?
       what are the current lab angles subtended by the DSSSDs?
   
      Rutherford cross section for 20MeV 16O+4He



               Reaction: 4He(16O,16O)4He

                      A:           4         16         16          4
                      Z:           2          8          8          2
              Mass(amu):    4.002603  15.994915  15.994915   4.002603
             Error(keV):       0.001      0.002      0.002      0.001
                 Origin:
                 Status:

  Projectile lab energy:   20.000 MeV
              CM energy:    4.003 MeV

                     Particle 3                                 Particle 4
                   ( scattered )                                ( recoil )

  Lab         Cross Section         CM    Lab/CM    Lab        Lab      Lab
 Angle      Lab           CM       Angle   Ratio   Energy     Angle    Energy
 (deg)           (mb/sr)           (deg)           (MeV)      (deg)    (MeV)

  0.00 NaN          Inf            0.000 NaN       20.000     90.000    0.000
  1.00 0.143028E+09 0.572301E+07   4.999   0.040   19.976     87.500    0.024
  2.00 0.894079E+07  356425.      10.017   0.040   19.902     84.992    0.098
  3.00 0.176669E+07  69982.6      15.072   0.040   19.780     82.464    0.220
  4.00  559329.      21951.4      20.186   0.039   19.607     79.907    0.393
  5.00  229335.      8887.05      25.382   0.039   19.382     77.309    0.618
  6.00  110782.      4221.76      30.690   0.038   19.103     74.655    0.897
  7.00  59959.1      2235.75      36.144   0.037   18.768     71.928    1.232
  8.00  35299.6      1279.52      41.790   0.036   18.371     69.105    1.629
  9.00  22192.2      775.052      47.692   0.035   17.907     66.154    2.093
 10.00  14729.2      489.347      53.941   0.033   17.366     63.029    2.634
 11.00  10261.1      317.919      60.685   0.031   16.732     59.658    3.268
 12.00  7514.20      209.725      68.185   0.028   15.976     55.907    4.024
 13.00  5900.47      137.756      77.018   0.023   15.035     51.491    4.965
 14.00  5693.43      85.2271      89.184   0.015   13.688     45.408    6.312

 Maximum lab scattering angle (  14.49 deg ) exceeded

________________________________________________________________________________



      aida01 4*L spectra - attachments 19-23
       channels 0-8 - high stats structure(s) at low energy
       channels 9-16 - high energy peak cf. aida04 asic #4 spectra

      Merger, Merger stats, TapeServer - attachments 16-18

Started Run 11 with beam ON. 

We observe the same pattern of counts in DSSD0 (Top left detector) but not in DSSD1,2,3 (attachment 25). Moving in the left arm with the pneumatic we see a large drop in 
the rate on DSSD0 to essentially zero. The beam on the CRYRING monitor appears to disappear. 
When we move the right pneumatic IN, we observe an increase in the number of counts in the bottom-left part of the detector. The position is likely to be a mistake in the 
strip assignment.  
No increase observed in the leakage current. Will try systematically tomorrow.

Beam position monitoring from the CRYRING are shown in attachments 25-27

8:58

System wide checks okay, except

   
             Base         Current         Difference
aida08 fault      0x0 :      0xc :      12  
aida09 fault      0x0 :      0xb :      11  
FPGA Timestamp error counter test result: Passed 14, Failed 2
If any of these counts are reported as in error
The ASIC readout system has detected a timeslip.
That is the timestamp read from the time FIFO is not younger than the last

Temperatures okay

Attatchment 1: Layout 7 Waveforms

Attatchment 2: Temperatures

Attatchment 3: Layout 8 Waveforms

Attatchment 4: Layout 2 counter okay

Attatchment 5: Layout 4 spectrum okay

Attatchment 6: Leakage current okay

Switched to run 10 (run 9 is overnight background)

10:00 Target pressure on. Attachment 7

Beam on target

Observe low counts. Only aida4 showing anything (attachment 8)

See a peak around 19 MeV in LowEnergyExratedssd0 (can only see in the dssd0) that is assumed to be Rutherford scattering - Attachment 12

Temperatures ok

Wavefroms on attatchment 9 show only signals from aida04 - attachment 9

/////// UPDATE ////////

Peak observed is not from Rutherford, we think it is beam (or part of it) hitting the detector

Attachment 10 shows waveforms after the beam was turned off -> counts in aida 4 are gone.

Beam off = no peak at 19 MeV for LowEnergyExdssd0.

Leakage current ok (attachment 11)

//// BEAM ON AGAIN UPDATE ////

Still see peak at 20 MeV, see attachment 13

Peak is not in dssds 1,2,3 only in dssd 0 (Top left detector) (attatchments 14,15,16 respectively)

Leakage currents OK (attatchment 17)

Attachment 18: LowEnergyXYtotalDSSD0 plot showing all hits in one spot (this is with BEAM AND TARGET on)

TEST: Turning off target while beam is running, can still see hotspot in DSSD0 but no others, so definitely beam related. (attatchment 18)

Tom's estimate: 10^6 particles in 10 minutes - not as many as can be handled

/////// UPDATE ////////

No beam, no target (target off)

All checks ok (see attachment 20 and 21 for rates and temperatures)

Attachment 22: Layout 7 waveforms

Attatchment 23: Layout 8 waveforms

Attachment 24: Layout 2 waveforms 

Attachment 25: Layout 1 waveforms (rate)

Atatchment 26: Leakage current

Attachment 27: LowEnergyExRatedssd 0,1,2,3 respectively

Note: Data similar to that seen in DSSD0 (19 MeV peak) is not observed in MIDAS for the other DSSDs -> Issue is not related to the monitoring code 

17:30 File G22-88/R8

Pulser walkthrough

EGG Ortec 448 Pulser

Amplitide 90,000-10,000 @ 10,000 step
Normalise 5.0
Attenuators x5 IN
t_r 100ns
Tau_d 50us
Frequency Int Osc 50Hz
Polarity + ( - polarity via Cooknell SA1 Sum & Invert Amp )

18:10 Moved to new run R9

Pulser off. Overnight background.

ASIC settings for the pn FEEs has been reset to the default aida settings. This was done to combat the observed dropping of several  channels in pn only FEE modules 
following motors movement. This effect was also observed in 2022 in several pulser walkthroughs conducted pre and post detector movement. No dropped channels were 
observed in nn FEEs. 

ASIC seetings changed;

IBias LF feedback from 0xf to 0x8
diode link threshold from 0xbf to 0xca

We also set the slow comparatort for all FEE modules back to 0x64 (1 MeV)

Settings tested using only 2 pn FEE modules (aida05 and aida16). Movement left and right. Dropped channels observed in all pn FEEs except aida05 and aida16. All pn ASIC 
settings then changed. Movement for 10 repeptitions. No dropped channels observed in pn FEEs. 

New settings saved in 2024Feb08-15.59.09

EMERGENCY SHUTDOWNS

1. CARME motors: Q key on keyboard while on workspace 1 of appc218 (right of this double-monitor setup)

2. Internal target:

ELOG

Each shift should put all information relating to the shift in ONE elog entry unless a significant change occurs during the shift i.e beam off, target off, run change, detectors out etc.

Elog entry should be named by the shift - morning/afternoon/night followed by the current run number

TO DO FOR THE SHIFTERS - CHECK EVERY HOUR AND POST TO ELOG WITH SCREENSHOTS. ELOG should be updated with current beam energy, injection beam intensity, system checks OK/not, FEE temperature OK/not, Statistics OK/not, Merger OK/not, tape server data rate, Motors OK/not and min/max motors potentiometer value. The time of each update should be noted in the elog. Screenshots of important screens (detailed below) should also be uploaded to the elog.

CARME DAQ

CARME computer has 6 workspaces (WS), two monitors for each WS.

WS1 : left monitor - fee power

          right monitor - Detector Bias control, fee power server (just a terminal, do not close)

WS2 : left monitor - DAQ controls

          right monitor - DAQ server (just a terminal, do not close)

          Most important tabs (DAQ controls)

• Run control : shows daq status, stopped / going
• Fee temperatures : temperatures of fees labelled aida01, aida02, aida03, aida04, aida05, aida06, aida07, aida08, aida09, aida10, aida11, aida12, aida13, aida14, aida15, aida16. Hit reload, temperatures will update and should all be green. 1-2 C above safe limit (top) is OK. More than that - warn expert shifter immediately.
• Statistics : shows the statistics for each fee. Make sure ADC Data Items is selected in the left hand menu. Hit update all  (SCREENSHOT once, if no changes record OK in elog)
• System wide checks : checks for the setup. Click on 'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status' to run checks. (SCREENSHOT once, if no changes record OK in elog)
• Spectrum browser : loads histograms for fees and fee channels from preset layouts. select layout from 'layout ID' then restore layout from 'Arrange functions' drop down menu. Check layout 1, Select log scale and change xmax as 128 . This displays the data rate per strip. If any strips are a lot higher than the others, or very different from previous entry, make a note in the ELOG. (SCREENSHOT once, if no changes record OK in elog)
• Asic control : sets asic parameters

WS3 : left monitor - Merge control, Tape server

          right monitor - servers (just terminals, do not close) , data being written to file

• Check NewMerger tab. Hit reload button and see if 'current links with data' and 'current merged data rate' are updating. All links should go green, but not necessarily at the same time. Keep hitting refresh until you see all of them going green at least once.
• Data rate, hit reload should be around 100,000. Record data rate in elog
• Check tapeService tab. Hit reload button. Check data rate in Kbytes/sec box. Record data rate to elog. This is where the current run number is displayed
• On the right-hand monitor, bottom right terminal, check the current run fragment (sub-run) is being written and is slowly increasing in size. It refreshed automatically every 5 seconds.

WS4 : Leakage current plot

• Check leakage current plot is stable. Transients will occur during motors movement but baseline current should remain consistent. Make sure it is updating and time is correct. (SCREENSHOT once, record OK in elog if no changes) Check present values on WS2, CAEN window

WS5 : Online data monitoring

• Check the following plots are updating for each DSSD
  • LowEnergyXYTotal (right click - col - colz). This shows the total number of events, per pixel, since the code was started / re-started.
  • LowEnergyXYRate (right click - col - colz). This shows the rate over the last 20 seconds.
  • LowEnergyExRate (double left click. Right click on y axis - Log scale on y). Rate over the last 20 seconds
  • LowEnergyExTotal (double left click. Right click on y axis - Log scale on y). This shows the total energy deposited on all X strips since code restart.
  • LowEnergyEyTotal (as above). as above, Y strips. (SCREENSHOT of each per DSSD per shift. If significant changes are observed screenshot again)

WS6 : Browser, ELOG

-->IMPORTANT NOTE: MIDAS DAQ can respond slowly. DO NOT try to change tab or give new command while the previous one is being executed. Check activity in right-hand part of tab currently in use. Do not double click on buttons.

Motors computer (Computer to the right)

• Check motors cycle is running. The code will cycle through the loaded motors instructions. When an instruction is being done it is highlighted in bold. Check the bold highlighting cycles through entire set of instructions.
• Check potentiometer is reproducing same max/min values for each cycle of instructions.
• Detectors are on LEFT and RIGHT arm.
• No need for screenshots, but record in the ELOG you checked this.

14:50

Temperature, Statistics fine (see screenshots).

System wide checks fine (see below).

All FEEs pass clock check.

All FEEs pass White Rabbit check.

ADC Calibration check:

FEE64 module aida02 failed
FEE64 module aida16 failed
Calibration test result: Passed 14, Failed 2

If any modules fail calibration , check the clock status and open the FADC Align and Control browser page to rerun calibration for that module

FPGA timestamp error check:

         Base         Current         Difference
aida09 fault      0x1 :      0xa :      9  
FPGA Timestamp error counter test result: Passed 15, Failed 1
If any of these counts are reported as in error
The ASIC readout system has detected a timeslip.
That is the timestamp read from the time FIFO is not younger than the last

16:00 Slow comp thresh lowered to 100 keV in preparation for detector moving. Will have to test systematically what is the highest threshold we can accept

17:00 Temps fine. No overnight run.

11:00

Changed slow comp threshold to 0x32 (500 keV). Checkloaded.

Temperature, Statistics fine (see screenshots).

System wide checks fine (see below).

All FEEs pass clock check.

All FEEs pass White Rabbit check.

ADC Calibration check:

FEE64 module aida02 failed
FEE64 module aida16 failed
Calibration test result: Passed 14, Failed 2

If any modules fail calibration , check the clock status and open the FADC Align and Control browser page to rerun calibration for that module

FPGA timestamp error check:

         Base         Current         Difference
aida09 fault      0x1 :      0xa :      9  
FPGA Timestamp error counter test result: Passed 15, Failed 1
If any of these counts are reported as in error
The ASIC readout system has detected a timeslip.
That is the timestamp read from the time FIFO is not younger than the last

10:30 Found ADC#4 on aida 1 and 4 are suddenly noisy. See attach 1-2. Checkloaded multiple times - no effect.

Leakage current overnight was stable, but a clear transient can be observed yesterday around the times of the DSSD motion test. We did not observe this in the cave looking at the CAEN module - it might have been too fast.

Now reducing bias to 50 V and will check differences later. FEE temperatures OK.

10:50 Started DAQ. Rates are much higher in n+n strips, but p+n strips appear unaffected. See attach 4-5.

Stopped DAQ. Will leave 50V until after lunch.

11:27 Checked motor control status after yesterday's setup (see previous ELOG entry). See attach 6.

IN counters are respectively: read, increases, latch (left), latch (right)

Read is the number of pulses sent with the instruction to move. Increases is the number of times the instruction was considered. Latch on/off indicates the 1 s time interval during which commands sent to a motor arm (left or right) are considered double-firing or mistake, and ignored.

The number of increases is the same for move in/out - good!

The number of increases for move out is 1 unit less than move in - one double pulse / double command must have been received overnight and ignored.

Note torque on right arm is 2 (arbitrary units) which is unusually high and may indicate some tension in the kapton wires. No apparent effect on DSSD2,4 on that arm. Will not move for now.

13:24 FEE temperatures OK, leakage currents decreasing slighly.

13:41 Slowly increased bias to 100V. Interestingly it is now DSSD#4 (Ch#3) that displays the highest leakage current. Attach 7

13:45 Stats & Rates look rather similar to earlier this morning at 150V, but aida01 and 04 are quieter. Attach 8-9. Will leave at 100V for a while longer before moving to 150V.

15:20 Set bias to 150V

15:50 Nikos testing target. Started short run. Stats & Rates attached (10-11). Same as yesterday, aida01 and 04 ADC#4 no longer noisy.

V-I on attach 12-13. Legends unreliable!

17:00 Nikos completed target test. YR09 pressure around 3E-10 mbar with around 5E11 atoms/cm2 He target. Target not quite stable (10-20%), some optimisation required, but pressure holds at 3E-10 mbar for several minutes.

Beam on target will increase ring pressure. Can't test for now. Target tests without beam complete. Need to log all the data remotely. No logging available at present.

Leaving bias at 150V overnight. No run.

17.43 setup signals from detector movement controller.

See attachment 1
                                                         NIM               TTL                 TTL             +12V
Signal from CRYRING ------> CAEN N89 ------> LF4000 -------> CAEN N89 -------> LeCroy 222 -------> PCB amp -------> start move in
( active high )         TTL              NIM  FIFO  -------> CAEN N89 -------> LeCroy 222 -------> PCB amp -------> start move out
                                                    not(NIM)               TTL                 TTL    ^        +12V
                                                                                                      |
                                                                                                      |
CAEN N89 mode switch to OUT                                                                                                  PSU +12V 

Widths of signals from LeCroy 222
 move in = 75ms
 move out = 25ms

Note - the outputs of EG&G/ESN LF4000 FIFO could be connected directly to the LeCroy 222 as the inputs accept NIM and TTL

16.40 CB/ML install fibre optic cable from patch panel beneath dipole downstream of YR09/CARME chamber to VETAR2 front panel fibre connector - see attachments 1 & 2.

VETAR2 LCD display changes from magenta to cyan.

DAQ stop. DAQ reset. DAQ setup.

All system wide checks OK.

WR timestamp control - attachment 3 is timed 16.43.11 UTC+1

WR timestamp 0x17B101E7 7FCD1ACD -> 1707147827543349965ns -> 1707147827s -> Monday, February 5, 2024 3:43:47 PM UTC ( https://www.epochconverter.com/ )

13.41 DAQ start - file G22-88/R4

Pulser walkthrough

EGG Ortec 448 Pulser

Amplitide 90,000-10,000 @ 10,000 step
Normalise 5.0
Attenuators x5 IN
t_r 100ns
Tau_d 50us
Frequency Int Osc 50Hz
Polarity + ( - polarity via Cooknell SA1 Sum & Invert Amp )

File G22-88/R4

14.08 DAQ stop file G22-88/R4_8

06.40 DAQ continues file G22-88/R3_42

      DSSSD bias OK - attachment 1
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachments 3
       aida15 rate c. 34k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 75k ( 2x 'hot' channels )

      per FEE64 Stat spectra - attachments 4-5

      Merger and TapeServer - attachments 6-7

      All system wide checks OK except
       aida02 & aida08 FPGA timestamp error - attachment 8

      WR timestamps OK - attachment 9

09.47 DAQ continues file G22-88/R3_46

      DSSSD bias OK - attachment 10
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 11

      ADC data item stats - attachments 12
       aida15 rate c. 34k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 75k ( 2x 'hot' channels )

      per FEE64 Stat spectra - attachments 13-14

      Merger and TapeServer - attachments 15-16

09.52 per FEE64 Rate spectra - attachments 17-18

      per FEE64 1.8.L spectra - attachments 19-20

      per FEE64 1.8.H spectra - attachments 21-22

      per p+n FEE64 1.8.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 23-26

      per n+n FEE64 1.8.W spectra - 20us, 200us, 2ms & 20ms FSR - attachments 27-30


10.11 Merger stats blocks 0-4, 14-16 - attachments 31-38

10.14 aida01-aida04, aida14-aida16 stats- attachments 39-45

10.21 Overnight V-I attach 46

10.23 Save current ASIC settings 2024Feb05-10.22.28
       changes to disc mask and LED waveform threshold for some FEE64s

10.32 Analysis of data file G22-88/R3_45 - attachments 47
       deadtime aida01 c. 0.5%, all other FEE64s deadtime c. 0%


13.07 DAQ stop file G22-88/R3_50
      Stop merger
      Stop tapeserver

Afternoon: Tested detector motion. Channels on p+n strips drop out with high threshold (1 MeV), but not with low threshold (100 keV). No issues on n+n strips. Reasons unclear.

09.30 DAQ continues file G22-88/R3_17

      DSSSD bias OK - attachment 1
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 2

      ADC data item stats - attachment 3
       aida15 rate c. 25k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 45k ( 2x 'hot' channels )

      per FEE64 Stat spectra - attachments 4-5

      per FEE64 1.8.L spectra - attachments 6-7

      per FEE64 1.8.W spectra - 20us FSR - attachments 8-9

      Merger and TapeServer - attachments 10-11

09.36 Check ASIC load
      No change to aida01 ADC data item rate

      Last access times of data files indicate that data rate changed c. 05.00 - 06.00 this am.
      No obvious vacuum/temperature transients in last six hours.

09.55 All system wide checks OK except
       FPGA timestamp errors - attachment 12
      WR timestamps OK - attachment 13

10:06 V-I plot overnight - attach 14.

13.35 DAQ continues file G22-88/R3_22

      DSSSD bias OK - attachment 15
      ambient temperature 16.8 deg C

      FEE64 temperatures OK - attachment 16

      ADC data item stats - attachment 17
       aida15 rate c. 35k ( 2x 'hot' channels, 1x channel missing, all other channels OK )
       aida01 rate c. 51k ( 2x 'hot' channels )

      per FEE64 Rate spectra - attachments 18

      per FEE64 Stat spectra - attachments 19-20

      Merger and TapeServer - attachments 21-22

1. Check Proxy server is correct

localhost : 8080

incoming connections 7070

Establish port

ssh -L 8080:proxy.gsi.de:8080 carme@atppc025

2. Check a password for remote access has been set up

3. Close anydesk and check it is *really* closed using

ps -o pid= -C anydesk

kill -9 any process (as root)

4 Restart AnyDesk

systemctl restart anydesk (as npg)

01.07 DAQ continues file G22-88/R1_46
      background alpha

      DSSSD bias OK - attachment 1
      FEE64 temps OK - attachment 2
      ADC data item stats - attachment 3
       aida15 asic #2 u/s - rate c. 266k 

      aida11 1*L spectra - attachment 4

      ADC data items/s Merger, Tape Server & Merger stats - attachments 5-7
       data rate to disk c. 2Mb/s dominated by aida15 asic 2


10.05 DAQ continues file G22-88/R1_79
      background alpha

      DSSSD bias OK - attachment 8
       ambient temperature 16.8 deg C
      FEE64 temps OK - attachment 9
      ADC data item stats - attachment 10
       aida15 asic #2 u/s - rate c. 266k 

      aida11 1*L spectra - attachment 11

      ADC data items/s Merger, Tape Server & Merger stats - attachments 12-14
       data rate to disk c. 2Mb/s dominated by aida15 asic 2

10.12 per FEE64 Stat spectra - attachment 15
      missing channels aida03, aida04, aida05 & aida15
      Check ASIC load aida03, aida04, aida05 & aida15

13:25 Overnight leakage current plot - att 16


13.38 DAQ continues file G22-88/R1_92
      background alpha

      DSSSD bias OK - attachment 17
       ambient temperature 16.8 deg C
      FEE64 temps OK - attachment 18
      ADC data item stats - attachment 19
       aida15 asic #2 u/s - rate c. 266k 

      aida11 1*L spectra - attachment 20
       ASIC check load at 10.12 should result in 1-2 hits per channel in the Stat spectra aida03, aida04, aida05 and aida15
       Channels which continue to show zero counts likely indicate a FEE64-adaptor PCB connection issue
       Channels which now show 1, or more, counts cf. attachment 15 likely correspond to channels now working following the check ASIC load

      ADC data items/s Merger, Tape Server & Merger stats - attachments 21-23
       data rate to disk c. 2Mb/s dominated by aida15 asic 2

13.48 Stopped DAQ file G22-88/R1_93

      DSSSD bias OFF
      FEE64 power OFF


16.00 Installed FEE64 power cable to aida16
      Replaced aida15 with new FEE64 MAC 41:f6:5a

      Update dhcpd.conf
      Update MIDAS config to include aida16

      FEE64 power ON
      
      All system wide checks OK

      DSSSD bias OK - attachment 24

      FEE64 temperatures OK - attachment 25

      ADC data item stats - attachment 26
       aida15 rate changes from c. 260k to c. 25k ( 2x 'hot' channels, 1x channel missing, all other channels OK )

      per FEE64 Rate spectra - attachment 27

      per FEE64 1.8.L spectra - attachments 28-29
       pulser peak width aida11 44 ch FWHM, aida14 57 ch FWHM

      per FEE64 1.8.W spectra - 20us FSR - attachments 30-31

      
     Update NewMerger startup script and Options for 16x FEE64s - see attachments 32-33


16.20 file G22-88/R2
      Pulser 50Hz

16.28 DAQ stop

      Pulser OFF

      All histograms zero'd

16.33 DAQ starts file G22-88/R3
      alpha background

      ADC data item stats OK - attachment 34

      NewMerger, TapeServer and Merger stats - attachments 35-38

16.50 Pulser peak width spreadsheet for file R2 - attachment 39

20.32 DAQ continues file G22-88/R3_9

      DSSSD bias OK - attachment 40

      FEE64 temperatures OK - attachment 41

      ADC data item stats - attachment 42
       aida15 rate c. 25k ( 2x 'hot' channels, 1x channel missing, all other channels OK )

      per FEE64 Stat spectra - attachment 43

      Merger, Merger stats and TapServer - attachments 44-46

      Disc data items - attachment 47
       aida15 disc rate c. 8k
      Disable aida15 disc ( fast comparator ) outputs for asic#3 - attachment 48 
      Disc data items- attachment 49
       all FEE64s rate << 1Hz
    
     Update NewMerger startup script and Options for 16x FEE64s - see attachments 32-33

DAQ and NewMerger appear to be cofigured correctly.

Can allocate device, create volume and open file with TapeServer but cannot write data.

See attachmnents 1-3




Noted aida09 WR timestamp issue in attachment 3 - FEE64 Reboot fixed aida09 WR timestamp issue

Restarted DAQ/Merger/TapeServer - still cannot write to disk


14.30 CU provides the following list of NetVar variables used by the Merger

"MERGE_PID"
"MERGE_ID"
"MERGE_Action"
"MERGE_Signal"
   "MERGE_Parameter"
   "MERGE_Response"
   "MERGE_State"
   "MERGE_Trace"
   "MERGE_Paused"
   "MERGE_RunOptions"
   "MERGE_HardwareVersion"
   "MERGE_LinksAvailable"
   "MERGE_TestMode"
   "MERGE_PollTicks"
   "MERGE_LinksInUse"
   "MERGE_LinksAlive"
   "MERGE_StatsTime"
   "MERGE_Command"
   "MERGE_ZeroStats"
   "MERGE_SyncStep"
   "MERGE_InitialTimeStamp"
"MERGE_LinkState"
"MERGE_LinkStatus"
"MERGE_LinkAlive"
"MERGE_LinkInUse"

15.30 Changed Merger startup and NetVars files ( attachments 6 & 7 )

      Change server command line from

./master64 -i 16 -l 16 -p 11001  &

to

./master64 -i 15 -l 15 -p 11001  &


i.e. *exactly* matches number of FEE64s currently in use ( 15x FEE64s, aida01-aida15 )

      Change NetVars from 

MERGE.LinksInUse string 1%1%1%1%1%1%1%1%1%1%1%1%1%1%1%0%

to

MERGE.LinksInUse string 1%1%1%1%1%1%1%1%1%1%1%1%1%1%1%

i.e. string has 15x 1% strings *not* 15x 1% *plus 1x 0% string 

With *both* changes we are now able to write to disk.

N.B. We did not test the above changes individually - it is possible/probable that just one of the changes above fixes the problem.

Current pulser widths excel spreadsheet attached

09.58 DSSSD bias OK - attachment 1 

Ambient temperature +16.1 deg C FEE64 temps OK - attachment 2 

ADC data item stats OK - attachment 3 
 aida15 asic #2 high rate - asic u/s

system wide tests OK *except* aida09 - attachments 4-5 
 aida09 WR status 0x20 aida09 WR timestamp incorrect cf. all other FEE64s

per FEE64 Rate spectra - attachment 6

per FEE64 1.8.L spectra - attachments 7-8 
 aida14 pulse peak witdh 58 ch FWHM
 aida11 pulse peak witdh 48 ch FWHM

per FEE64 1.8.W spetra - 20us FSR - attachments 9-10
 

12.00 

aida09 WR timestamp issue resolved by FEE64 reboot 


14.10 

Safety pins removed from detector motion system. CB performs one, complete DSSSD movement cycle. Zero all histogram and stats per FEE64 Stat spectra ( log scale ) and 
ADC 
data item stats for the complete DSSSD movement cycle - attachments 11-12 
No change observed in DSSSD leakage currents during DSSSD movement cycle. 

15.35 

Resolved issue from previous elog. Begin background run writing data to disk.
ASIC check load 
Start DAQ G22-88/R1 background alpha 
EG&G Ortec 448 Pulser OFF 
ASIC settings 2024Jan20-12.02.08 
slow comparator 0x64 ( all FEE64s *except aida15 asic #2 0xff ) 
All histograms set to zero

DSSSD bias OK - attachment 13 
FEE64 temps OK - attachment 14 

WR timestamps OK - attachment 15 

ADC data item stats - attachment 16 
aida15 asic #2 u/s - rate c. 250k 

ADC data items/s Merger, Tape Server & Merger stats - attachments 17-19 
 data rate to disk c. 2Mb/s dominated by aida15 asic 2

To include alll 16 FEE modules in the NewMerger we edited the file /MIDAS/DB/EXPERIMENTS/MERGE/Options/carme-gsi from MERGE.LinksAvailable string 5 to MERGE.LinksAvailable string 15

We also edited the file /MIDAS/Linux/startup/NewMerger from ./master64 -i 8 -l 16 -p 11001  & to ./master64 -i 16 -l 16 -p 11001  &

We have started the Merger and tape server. The merger settings were 'corrupted' and did not display xfer Links => Merger. We implemented a fix from https://elog.ph.ed.ac.uk/DESPEC/36 and this resolved the issue.

We started the tape server, merger and go on the run control. We observe the merger working and data links to the tape server. A new file is created each time but we observe no data being written to that file. After 5 minutes of no data being written the merger crashed and the fees crashed soon after. We will leave until tomorrow to resolve.

Issue subsequently resolved see elog https://elog.ph.ed.ac.uk/CARME/487

Arrived at the control room to find we had lost connection to the power relay. We rebooted the nnrpi1 and re-connected according to the steps laid out in elog 471 -> all okay

11:00 Restarted daq with no changes to the system from yesterday. Bias consistent with previous days. All pulser peaks are slightly improved (even more for the pn pulser, one goes from 91 chn to 78). No pulser observed in nn FEE modules 9, 10, 13, 14 again.

ADC data items check OK - all ~3k

Rates - all OK  - attachment 1

1.8L spectra. - attachment 2,3

1.8W waveforms - attachment 4,5

11:20 Changed shaping time from 0xf to 0x3 (2us)

ADC data items check OK - all ~3k attachment 6

Rates - all OK  - attachment 7

1.8L pn spectra. - attachment 8

1.8W waveforms - attachment 9,10

11:35 Changed shaping time from 0x3 to 0x7 (4us)

ADC data items check OK - all ~3k attachment 11

Rates - all OK  - attachment 12

1.8L pn spectra. - attachment 13

1.8W waveforms - attachment 14,15

11:45 Changed shaping time from 0x7 to 0xb (6us)

ADC data items check OK - all ~3k - attachment 16

Rates - all OK  - attachment 17

1.8L spectra. - attachment 18,19

1.8W waveforms - attachment 20,21

11:59 Changed shaping time from 0xb to 0xd (7us)

ADC data items check OK - all ~3k - attchment 22

Rates - all OK  - attachment 23

1.8L pn spectra. - attachment 24

1.8W waveforms - attachment 25, 26

12:09 Changed shaping time back to 0xf (8us)

ADC data items check OK - all ~3k - attchment 27

Rates - all OK  - attachment 28

1.8L pn spectra. - attachment 29

1.8W waveforms - attachment 30,31

13:10 Power cycled FEE modules. nn pulser for FEEs 9,10,13,14 are now active again (no changes made in the cave) Pulser widths for nn and pn  both consistent with before lunch

Removed ground from DSSD #1 to the chamber and set MACBs so that timestamp is from the NIM WR emulator not the VME VETAR2.

Root MACB mode 0x3 -> 0xd - all other MACB modes 0x3 ( unchanged ).

No timestamps observed from the emulator. Re-set to take timestamps from the VETAR" unit -> all timestamps observed.

10:30

No pulser observed in nn FEE modules 9, 10, 13, 14.

ADC data items check OK - all ~3k - attachment 2

Rates - all OK  - attachment 3

1.8L spectra. - attachment 4,5

1.8W waveforms - attachment 6,7

11:00

Checked daisy chain which goes from 8->14->13->10->9. Replaced the lemo cable from 8->14 and pulsers re-appear. Rates all OK except aida10 which has now disappeared, tried asic check and reset and startup again no change in aida10.

Now majority of pulsers are observable the widths will be noted in a spreadsheet

After replacing lemo for nn pulser chain, all nn pulser widths decreased slightly ~10% for all nn FEEs, little change in pn pulser widths but n pulser for DSSD#1,2 appears more gaussian

11:44

FEE64s power cycled. aida10 now prioducing data.

Removed internal jumper from CAEN N1419ET 

ADC data items check OK - all ~3k - attachment 8

Rates - all OK  - attachment 9

1.8L spectra - attachment 10,11 little change in pn pulser widths but nn pulser widths are slightly broader.

1.8W waveforms - attachment 12,13

15:50 Jumper re-mounted onto caen bias module

ADC data items check OK - all ~3k - attachment 14

Rates - all OK  - attachment 15

1.8L spectra - attachment 16,17

1.8W waveforms - attachment 18,19

16:45 Ground cables attached from water pipe (chamber ground) to lemo cable on aida08 (nn), aida13 (nn), aida09 (nn), aida01 (pn) so that all DSSDs are connected to chamber ground.

ADC data items check OK - all ~3k - attachment 20

Rates - all OK  - attachment 21

1.8L spectra - attachment 22,23

1.8W waveforms - attachment 24,25

This is how to update the MACB firmware using the opensource tool xc3sprog


Setup (only has to be done first time)
--------------------
Install xc3sprog and fxload (ubuntu: sudo apt install xc3sprog fxload)

To configure the USB programmer:
Download xilinx.tar.gz and put the hex files in /usr/share

Download the udev rules and put it in /etc/udev/rules.d

Run:
sudo udevadm control --reload-rules

[Taken from https://github.com/timvideos/litex-buildenv/wiki/Xilinx-Platform-Cable-USB-under-Linux]

Plug in programmer and should work

----------------------------------
Programming a MACB

Open MACB side panel and connect JTAG programmer to port 

Plug MACB into NIM bin and power NIM bin on

Run
xc3sprog -c xpc -m -j

Expected output:
XC3SPROG (c) 2004-2011 xc3sprog project $Rev$ OS: Linux
Free software: If you contribute nothing, expect nothing!
Feedback on success/failure/enhancement requests:
        http://sourceforge.net/mail/?group_id=170565 
Check Sourceforge for updates:
        http://sourceforge.net/projects/xc3sprog/develop

JTAG loc.:   0  IDCODE: 0x16d8c093  Desc:                  XC2C128_TQ144 Rev: A  IR length:  8

This confirms the JTAG is working

Then to program  run

xc3sprog -c xpc -m . macb_apr20.jed

The directory should contain the macb_apr20.jed and the xc2c128.map files

Expected output:
XC3SPROG (c) 2004-2011 xc3sprog project $Rev$ OS: Linux
Free software: If you contribute nothing, expect nothing!
Feedback on success/failure/enhancement requests:
        http://sourceforge.net/mail/?group_id=170565 
Check Sourceforge for updates:
        http://sourceforge.net/projects/xc3sprog/develop

Programming row  81                                        
Verify: Success   

Now power off the NIM bin and remove the programmer and put the cover back on

09.00 CARME IE514 5.1e-11mbar

09.15 IE514 not working - one of cables disconnected?

      DSSSD #1 bias cable changed from SHV - Lemo 00.250 to SHV - 2x Lemo 00.250

      DSSSD #1 & #2 LK1 removed from n+n Ohmic side bias FEE64s

      aida11 HDMI cabling re-seated at MACB

10.26 DSSSD bias OK - attachment 1
      Ambient temperature +16.2 deg C

10.30 ADC data item stats OK - attachment 2
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser

10.34 per FEE64 Rate spectra - attachment 3
       OK except for known issues aida05, aida07 and aida16 - all others OK

      per p+n FEE64s 1.8.L spectra - attachment 4
       pulser peak width 52 ch FWHM aida11- double peaking DSSSD #1 & #2

      per n+n FEE64s 1.8.L spectra - attachment 7
       pulser peak width 77 ch FWHM aida04 - more uniform noise across all DSSSDs

10.42 per FEE64 1.8.W spectra - 20us FSR - attachments 5-6

11:00 LK2 removed from aida01-04. Configuration for all adaptor cards/FEE modules is now the same. No other change to the setup.

12:00 FEEs power on, bias to 150 V. No change in bias observed. 

12.02 ADC data item stats OK 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser

12.07 per FEE64 Rate spectra 
       OK except for known issues aida05, aida07 and aida16 - all others OK
      
12:09  per p+n FEE64s 1.8.L spectra 
       We now observe a large peak around chn 30,000 on all FEEs. Perhaps an effect of some change in the ring?
       pulser peak width 53 ch FWHM aida11- still observe double peaking DSSSD #1 & #2

      per n+n FEE64s 1.8.L spectra 
      Lots of events at ~chn 65,000 - double peaking now observed on aida03 and aida04
      pulser peak width 93 ch FWHM aida14 

12.20 per FEE64 1.8.W spectra - 20us FSR 

      Perhaps bias was off while acquiring and spectra was not cleared properly. Re-do tests

13:40 ADC data item stats OK - attachment 7 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser

       per FEE64 Rate spectra - attachment 8
       OK except for known issues aida05, aida07 and aida16 - all others OK

      per p+n FEE64s 1.8.L spectra - attachment 9 
       pulser peak width 55 ch FWHM aida11- double peaking DSSSD #1 & #2

      per n+n FEE64s 1.8.L spectra - attachment 10
       pulser peak width 65 ch FWHM aida14 - more uniform noise across all DSSSDs

       per FEE64 1.8.W spectra - 20us FSR - attachments 11-12 

      With help from NH updated firmware on all MACB modules to version 4/20 - see https://elog.ph.ed.ac.uk/CARME/482

      Timestamps for all FEE modules now correct - attachment 13

      MAC address of aida07 was found to be 41-b4-16 not 41-d4-16 as was labelled on the FEE module
       re-labelled FEE64
       dhcpd.conf and MIDAS startup.tcl updated, dhcpd and MIDAS 8015 server restarted - aida07 is now working OK
 
      CAEN N1419ET internal jumper fitted - outputs are no longer floating

15:20 ADC data item stats OK 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser - attachment 14

       per FEE64 Rate spectra
       OK except for known issues aida05, and aida16 - all others OK  - attachment 15

      per p+n FEE64s 1.8.L spectra -
       pulser peak width 50 ch FWHM aida11- double peaking DSSSD #1 & #2 - attachment 16

      per n+n FEE64s 1.8.L spectra 
       pulser peak width 67 ch FWHM aida14 - more uniform noise across all DSSSDs

       per FEE64 1.8.W spectra - 20us FSR - aida14 missing from waveforms - attachments 17,18
 
   Swapped the test inputs so that +ve is now from the inverter and -ve direct from pulser.  - attachments 19,20. Observed reduced noise for when plugged directly into the pulser than when connected from the inverter. 



   Lowered threshold from 0x64 (1 MeV) to 0x20 (320 keV) - attachment 21, 22 - Observed increase in rates, in particular for the DSSD #1,2 pn side. Conclusion -> increased pulser width for DSSD #1,2 is real and not from the pulser
 


   aida01 lemo to water pipe (chamber ground) connection installed 

   ADC data item stats OK 
      aida06 & aida15 > 100k, all others c. 3k consistent with 50Hz pulser 

       per FEE64 Rate spectra
       OK except for known issues aida16 - all others OK 

      per p+n FEE64s 1.8.L spectra -
       pulser peak width 48 ch FWHM aida11- double peaking DSSSD #1 & #2 - attachment 23

      per n+n FEE64s 1.8.L spectra 
       pulser peak width 67 ch FWHM aida14 - attachment 24

       per FEE64 1.8.W spectra - 20us FSR - slightly reduced 100 kHz on pn waveforms - attachments 25,26

   Disconnected aida06 and replaced with the spare FEE module (mac address: 42:0d:16). Power cycled and updated config files. 

   ADC data item stats OK 
      aida15 > 100k, all others including aida06 c. 3k consistent with 50Hz pulser - attachment 27

       per FEE64 Rate spectra
       OK except for known issues aida16 - all others OK - attachment 28

      per p+n FEE64s 1.8.L spectra -
       pulser peak width 48 ch FWHM aida11- no longer observe double peaking DSSSD #1 & #2 but the pulser peaks are still broader compared to DSSD #3,4 - attachment 29

      per n+n FEE64s 1.8.L spectra 
       pulser peak width 55 ch FWHM aida14 - attachment 30

       per FEE64 1.8.W spectra - 20us FSR - greatly reduced 100 kHz on pn waveforms, dodgy FEE previously aida06 must@ve had some impact on DSSD#1,2 - attachments 31,32
      

Test + and test - daisy chain cabling extended from DSSSD #1 to #2 to DSSSD #1 to DSSSD #4
 terminated by 50 Ohm at end of daisy chain

Grounding cabling extended from DSSSD #1 ( only ) to DSSSD #1 to DSSSD #4
 grounding cables daisy-chained between 4x adaptor PCBs of each DSSSD - no inter-DSSSD grounding cables

DSSSD#1 bias cable SHV-Lemo 00.250 ( to p+n bias adaptor PCB )
DSSSD#2 - DSSSD #4 bias cables SHV - 2x Lemo 00.250 ( to p+n/n+n bias adaptor PCBs )

LK1 fitted for DSSSD #1 & #2 n+n Ohmic side bias adaptor PCBs
LK2 not fitted on any adaptor PCBs? to be checked

CAEN N1419ET internal jumper fitted ( non-floating outputs )? to be checked

16.54 DSSSD bias OK - see attachment 1

      FEE64 temperatures - attachment 2
       aida06 ASIC temp low

      System wide checks and WR - attachments 3-6
       global clock status aid04 0x6, aida06 0x4
       multiple FPGA timestamp and WR decoder errors for MACBs 4 and 5 ( of 5 )

       WR timestamps OK for aida01-aida08 ( w/ MACB firmware version 04/20 )

     ADC data item stats - attachment 7
      all rates consistent with 50Hz pulser *except* 
       aida11 global clock fail
       aida07 no boot
       aida16 no power
       aida06 ? 
       aida15 faulty asic #2

     per FEE64 Rate spectra - attachment 8

     per p+n and n+n FEE64 1.8.L spectra - attachments 9-12
      Pulser peak width p+n side 52 ch FWHM ( aida12 ), n+n side 70 ch FWHM ( aida14 )

     per p+n and n+n 1.8.W spectra - 20us FSR - attachments 13-16

09.50 CARME IE514 5.1e-11 mbar ( ambient temperature 16 deg C )

10.24 DSSD bias OK - attachment 1

10.40 MACB configuration

      1              2      3      4      5

mode  0x3            0x3    0x3    0x3    0x3

      from VETAR2    from 1 from 1 from 1 from 1
      to 2           aida01 aida05 aida09 aida13
      to 3           :      :      :      :
      to 4           :      :      :      :
      to 5           aida04 aida08 aida12 aida16

WR emulator cables connected to MACB #1 rear panel

DAQ reset and DAQ setup between each test below - the FEE64s were NOT power cycled between tests


      Per https://elog.ph.ed.ac.uk/CARME/478 test WR

      connecting/disconnecting HDMI cable from VETAR2 to MACB level 0 input was tested 20.1.24 per https://elog.ph.ed.ac.uk/CARME/477

      With VETAR2 abd all MACB mode sttings 0x3 observe same WR issues as previously

      Noted clock & sync cables from WR emulator were swapped
      ( pay attention to SMA cables cf. Zybo board *not* NIM module as shown in https://elog.ph.ed.ac.uk/DESPEC/517 )

      Change MACB level 0 mode from 0x3 to 0xd - all other MACBs mode 0x3
      HDMI cabkle from VETAR2 to MACB level 0 input disconnected

      System wide checks - global clocks all fail - see attachments 2-5


11.14 Reduce MAC config to MACB level 0 plus one MACB connected to FEE64s aida01-aida4
      All MACB modes 0x3

      System wide checks aida01-aida04 OK. Same problem observed with WR timestamp for aida01-aida04

      See attachments 6-9

11.22 Reduce MAC config to one MACB connected to FEE64s aida01-aida4
      MACB mode 0x3

      System wide checks aida01-aida04 OK. Same problem observed with WR timestamp for aida01-aida04

      See attachments 10-13

11.26 One MACB config using MACB 2 of 5 in NIM bin connected to FEE64s aida01-aida4
      MACB mode 0x3

      System wide checks aida01-aida04 OK. Same problem observed with WR timestamp for aida01-aida04

      See attachments 14-17

11.36 Connect VETAR2 output directly to aida09

      System wide checks for aida09 OK.Valid WR timestamp appears to be generated.

      See attachments 18-20

      Check NIM bin with MACBs etc
        +/-6V, 12V and 24V lines OK

11.42 Connect VETAR2 to MACB 1 of 5 ( mode 0x3 )
      Connect aida09 to MACB 1 of 5
      Global clock OK. WR decoder status error 0xd reported for aida09. Valid WR timestamp for aida09.

      See attachments 21-24

11.53 Connect VETAR2 to MACB 1 of 5 ( mode 0x3 )
      Connect aida09-aida12 to MACB 1 of 5
      Global clock OK. WR decoder status error 0xd reported for aida09-aida12. WR timestamps for aida09-aida12 very different - aida10 might be correct timestamp?

      See attachments 25-28

11.53 Connect VETAR2 to MACB 2 of 5 ( mode 0x3 )
      Connect aida09-aida12 to MACB 2 of 5
      Global clock OK. WR decoder status error 0xd reported for aida09-aida12. WR timestamps for aida09-aida12 very different - aida10 & 11 approx correct but 11 has 
lower timestamp than 10 so probably not quite right

      See attachments 29-32


15.00 Per https://elog.ph.ed.ac.uk/CARME/478 systematically test 1x MACB configurations to find 'working' MACBs

      Identify 3x MACB modules which produce sensible WR timestamps - all labelled ' firmware version 04/20 '.
      The other 5x MACBs are either unlabelled or labelled unknown.

      MACB configuration now uses 04/20 MACBs for MACBs 1-3 and unlabelled 2xMACBs fpr MACBs 4-5
      aida01-aida08 should produce WR timestamps OK

      Will attempt to update firmwre of 5x MACBs tomorrow pm with NH

This is a suggested sequence of actions to help with the current problem with the White Rabbit timestamp distribution. Test the system between each intervention. If a test provides an answer to the problem then proceed accordingly rather than continue with the suggestions.

• Please sketch the current MACB wiring.
• Unplug and replug the connectors of the VETAR HDMI connecting cable. If possible clean the pcb and cable HDMI connectors with contact cleaner.
• Disconnect the VETAR and connect the Emulator. If the clocks are not correct then at the Local and Waveform control page change the entry for LMK03200 control register at offset 5 to 0xB. If clocks are now ok then repeat for all the FEEs. Be aware that this value will be set back to 0x1B during SETUP. If the Emulator fails then continue with VETAR and setting 0x1B.
• Connect one or more FEE64 to the base MACB.
• Change the base MACB and repeat the test above.
• Connect a FEE to the VETAR direct. 

I am at present unable to advise further. However should there be more then I will update this entry.

11.00 No WLAN/WiFi
      came-gsi private LAN appears to be OK

      AIDA FEE64 power ON

11.09 FEE64 temps - attachment 1
      aida06 low, otherwise OK

11:10 CARME IE514 4.0e-11 mbar, temp unknown
      IE514 OFF

11.22 Detector bias ON - attachment 2
      found ch 2 up ramp set to 63V/s! changed to 1V/s

11.30 system wide checks OK except 
      aida02 & aida06 fail WR decoder status

      WR ts control - attachments 3-4


12.02 ASIC settings updated for aida09-aida16
      ASIC settings DB key 2024Jan20-12:02:08

      Unable to save DB key to Options - use ASIC settings restore as workaround

12.30 Layouts for 16x FEE64s created - directory ~/LayOut/16xFEE64
      Note layouts include spectra from aida07, aida08 and aida16 so an error message will be generated but it can be ignored


12.40 per FEE64 Rate spectra - attachments 5-6
      per FEE64 p+n & nn 1.8.W spectra - attachments 7-8

12.57 per FEE64 p+n & n+n 1.8.W spectra 20us FSR - attachments 9-10

Test signals 

EG&G Ortec 448 Pulser
Amplitude 90,000
attenuation x10
Normalise 5.00
t_r 100ns
tau_d 50us
Frequency 50Hz ( relay line freq )
Polarity +

test + direct from 448, test - from Cooknell SA1 Sum & Invert 

Test + daisy chain -> aida01 - aida02 - aida05 - aida06 - 50 Ohm
Test - daisy chain -> aida03 - aida04 - aida07 - aida08 - 50 Ohm

aida08 ( DSSSD #2 n+n Ohmic bias ) LK2 removed, LK1 added
aida04 ( DSSSD #1 n+n Ohmic bias ) no LK2 fitted, LK1 added

DSSSD#1 SHV - 2x Lemo 00.250 cable replaced by standard SHV - BNC/BNC Lemo-00.250 coaxial cable

Adaptor PCB ground daisy chain aida01 - aida02 - aida03 - aida04

DSSSD#2 - DSSSD#4 HV cabling unchanged

15.30 Power ON
      System wide checks OK except
          aida02 fail WR decoder status - attachment 11

      FEE64 temperatures - attachment 12
       aida06 ASIC temp low

      DSSSD bias - attachment 13
     
      ADC data item stats - attachment 14
       slow comparator 0x64

      per FEE64 Rate and 1.8.W 20us FSR spectra - attachments 15-17

16.00 per FEE64 rate spectra - attachment 18

16.15 per FEE64 Rate and 1.8.W 20us FSR spectra - attachments 19-21

17.36 Switch from VETAR2 ( all MACB modules mode 0x3 ) to NIM WR emulator ( root MACB module 0xd, all others 0x3 )
      All FEE64s fail Global clock and WR decoder - attachments 22-24
      WR timetsamp control - attachment 25


18.10 Noted MACB #4 mode actually set to 0x2 *not* 0x3 - changed to 0x3

      Re-test with VETAR2 WR - same behaviour as observed this morning - see attachments 26-30




Summary

n+n sides appear to be OK but noisy

no data observed from aida06 & aida11
 aida11 known to be disconnected from adaptor PCB

aida15 asic #2 may be faulty

aida01, aida05, aida12 - data suggest FEE64/adaptor PCB alignment issue ?

aida02, aida03, aida09, aida14 - data suggest adaptor PCB damaged pins ?


aida07 - network config issue ?

aida08 - not completing boot

need to attach sys console to aida07 & aida08 to diagnose problem.

12.20 CARME IE514 4.1e-11mbar, ambient temperature 16.7 deg C

      FEE64 cabling complete

      WR source - VETAR2 borrowed from Nik Kurz and opwerating standalone ( no BuTIS reference )
      All MACBs mode 0x3


15.20 Power ON FEE64s #1 - #15

      aida02 did not boot - /etc/dhcp/dhcpd.conf typo - fixed

      aida04 did not boot - AIDA FEE64 PSU output #4 fuses open circuit - fuses replaced from AIDA FEE64 PSU spare channel ( aida16 not connected yet ) - fixed

      aida07 did not boot - power OK - FEE64 comfort LEDs OK - network switch link LED OK - network config?

      aida08 boots - power OK - comfort LEDs OK - network switch link LED OK - requests RFS / but does not request RFS MIDAS - can ping aida08 OK, cannot telnet aida08 'connection refused'

      aida09 did not boot - FEE64 comfort LEDS OFF - swap FEE64 #9 & #10 power cables - aida09 boots OK, aida10 does not boot
      Restore #9 & #10 power cables - swap AIDA FEE64 outputs #1 & #2 ( aida09 & aida10 ) - aida09 boots OK
      Conclude AIDA FEE64 PSU ( no label ) output #1 is faulty. Replace AIDA FEE64 PSU ( label ISOL3 ). aida09 & aida10 boot OK

      aida15/aida16 MAC addresses were swapped in https://elog.ph.ed.ac.uk/CARME/467 - fixed

      aida01-aida06, aida09-aida15 boot OK - aida07 does not boot, aida08 does not complete boot

16.25 Configure MIDAS DEE64 servers aida01 - aida06, aida10 - aida15 

      FEE64 temperatures - attachment 1
      aida06 looks low ( c. 25 deg C cf. c. 40 deg C )

      System wide checks - attachments 2-8
       aida02 fails WR decoder

      WR timestamps ( attachments 7 & 8 ) look odd/low - values always c. 0x2???


17.30 CARME IE514 OFF

      WR NIM emulator SMA cables to root MACB ( rear panel ) disconnected at front panel

      Power cycle FEE64s

      System wide checks & WR timestamp control - attachments 9-14
       no change

17.45 Detector bias -20, -100 & 150V - attachments 15-17
      CAEN N1419ET non-floating outputs ( to be checked ), HV cable SHV - 2x Lemo 00.250, LK1 not fitted 

18.40 Detector bias -150V attachment 18




To Do
Check ASIC settings
Configure HV
Check LKs
Ground cabling
      

Network ( dhcpd.conf ) and MIDAS startup.tcl/Options/ASIC settings/rfs filesystems configured


17.20 CARME IE514 4.1e-11mbar, ambient temperature 16.7 deg C
      Pressure appears to be drifting upwards - see attachment 1

Spare AIDA hardware 

1x AIDA FEE64 PSU
1x USB-controlled ac mains relay 

Transferred from EX 2.039 store ( ESR roof ) to CARME storage bins adjacent to CRYRING counting room ( CRYRING roof ).

CRYRING Hall

12 USB-Jtag cables ( sys console ) + 1x to Edinburgh Jan 2024 to fabricate more with spare Jtag PCBs
7x HDMI FEE64 - MACB cables
0x 0.3m HDMI-HDMI cables - require 8x 0.3m HDMI - HDMI cables + 2x 3m HDMI-HDMI cables
2x MACB
1x NIM WR emulator
1x Dlink 7 port USB extender
1x Netgear 24-port Gbit network switch
1x CAEN N1419ET ( ch #0 u/s ? )
0x 10m RJ45 Cat 6 network cables yellow/green/purple/brown - require 2x of each

CAEN N1419ET remote control via carme-gsi and nnrpi1 - see https://elog.ph.ed.ac.uk/CARME/472

15x ( of 16x ) AIDA power cables available, labelled #1 - #15, installed

16x ( of 16x ) RJ45 Cat 6 network cables available, 15x labelled #1 - #15

16x ( of 16x ) HDMI cables available, labelled #1 - #16

Login to nnrpi1 from carme-gsi using ssh

Execute the caen_screen.sh script

pi@nnrpi1:~ $ cat ./caen_screen.sh
if ! screen -list | grep -q "caenhv"; then
	screen -f -S caenhv /dev/ttyACM0 9600
else
	screen -x caenhv
fi
pi@nnrpi1:~ $ ./caen_screen.sh

Enter the text string 'caen'

If the CAEN display program is already running you will only see page updates/changes.
- enter q ( quit ) and then d ( display ) to re-display the entire screen.

See attachment 1

Change RPi from CARMEraspberrypi to nnrpi1 to provide carme-gsi access to Rly16 to control USB-controlled ac mains relay.
nnrpi1 is already defined in carme-gsi:/etc/dhcp/dhcpd.conf

Transfer RPi network connection from CRYRING local network to AIDA 24-port network Gbit switch

Change /etc/hostname from

CARMEraspberrypi

to

nnrpi1

Change /etc/hosts from

127.0.0.1	localhost
::1		localhost ip6-localhost ip6-loopback
ff02::1		ip6-allnodes
ff02::2		ip6-allrouters

127.0.1.1	raspberrypi	

to

127.0.0.1	localhost
::1		localhost ip6-localhost ip6-loopback
ff02::1		ip6-allnodes
ff02::2		ip6-allrouters

127.0.1.1	nnrpi1

Reboot RPi

Login to RPi and start MIDAS 8015 service

/MIDAS/TclHttpd/linux-arm/TclHttpd-server &

Open new browser tab on carme-gsi

http://nnrpi1:8015/AIDA/Rly16/Rly16.tml

FEE64

#1 - #16 -> aida01 - aida16

Network configuration - /etc/dhcpd/dhcpd.conf - attachment 1

MIDAS Options

Added Options sub-directories for aida09-aida16 - attachment 2

MIDAS ASIC settings

Added sub-directories for aida09-aida16 - attachment 3

MIDAS configuration - /MIDAS/config/TclHttpd/carme-gsi"8015 - attachment 4
Currently only aida01-aida08 defined

MIDAS embedded rfs filesystems for aida01-aida24 alreday exist - attachment 5

All FEE64s connected to rev B CARME adaptor PCBs
LK1 fitted to n+n bias FEE64 ( aidaxx, aidaxx, aidaxx, aidaxx )
No other LKs fitted


MACB

WR source NIM WR emulator or VETAR2

See https://elog.ph.ed.ac.uk/DESPEC/517 for MACB mode configuration


CAEN N1419ET


EG&G Ortec 448 Pulser


ASIC settings


Options

10.00 Outflow manifold returned from workshop with leaking attachment point welding re-worked.

11.30 Outflow hoses re-attached to outflow manifold. Faulty male Swagelok replaced.
      Outflow manifold tested on floor - no leaks observed.

      Mounted outflow manifold. All inflow/outflow hoses attached to FEE64s - see attachments 1-4.
      FEE64 #11 detached adaptor PCB - temporarily secured by cable tie.

      Inflow/outflow valves opened. Pin hole leak observed at 3/8" connector gasket - indicated by arrow attachment 
3.
      Leak fixed by tightening fitting.

      1x spare inflow/outflow connected together - attachment 4.

11.40 CARME IE514 3.8e-11mbar, ambient temperature 16.5 deg C

15.05 8x AIDA FEE64 power cables ( #1 - #8 ) installed FEE64s #1 - #8
      Note - Samtec lock clips broken on 3 of 8 cables due to careless handling/poor storage
      AIDA FEE64 power cables tied to one of the FEE64 copper coolant pipes.

      See attachments 5-7

15.30 USB-controlled ac mains relay - USB connected to RPi CARMEbakingpi currently used for CAEN N1419ET 
      Rear panel key switched to override - no flow/d.p. sensors currently installed - front panel water ( yellow ) and override ( red ) LEDs active.

16.15 Transfer CARMEbakingpi from CRYRING network to AIDA 24-port Gbit network switch connected to carme-gsi
      CARMEbakingpi becomes nnrpi1 p- can connect OK via ssh from carme-gsi

      Start server ( port 8015 ) manually

      ssh pi@nnrpi1
      
      /MIDAS/Tcl/Httpd/linux-arm/Tcl-Httpd-server &

      See attachment 8

Cooling water manifolds


The manifolds were returned this afternoon.

Inflow manifold - blue hose, female Swagelok connectors

Attached to inflow hose and bled using bleed/drain valve.
Small leak observed at the 3/8" connection between the manifold and the bleed/drain valve - attachment tightened and leak fixed.
Inflow manifold installed.

Outflow manifold - red hose, male Swagelok connectors

Attached to outflow hose and bled using bleed/drain valve.
Small leak observed at the weld immediately *below* the weld that had been re-worked - this weld had not been re-worked.
Significant leak observed at one of the male Swagelok connectors in the lower half of the manifold - it does not seal correctly.


DR will return this manifold to the workshop for welding re-work Tuesday am.
The faulty male Swagelok will be replaced.


AIDA cabling


16x AIDA PSU, HDMI and RJ45 Cat 6 cables and 4x SHV-BNC cables required.

Available

8x AIDA PSU cables 
1x AIDA PSU cable ( in one of two white plastic storage boxs with 7x FEE64s returned from STFC DL ) now appears to be missing

16x AIDA HDMI cables 

8x RJ45 Cat 6 network cables
1x RJ45 Cat 6 network cable ( network switch to CRYRING network patch panel - to be replaced )
3x RJ45 Cat 6 network cables found in AIDA plastic box ( S4 Messehutte )

3x SHV-BNC 

Will check DESPEC store above ESR with NH tomorrow afternoon.

*Updated following FEE changes. Correct as of 31/01/24

FEE modules are labelled according to the diagram in attachment. Note attachment is looking downstream. Each FEE module is also labelled with its assigned number and whether it is a bias connection on the FEE holders. MAC addresses and FEE descriptions are as follows;

1 -  41:d8:20  - top left detector -  pn bias

2 -  41:d8:2a  - top left detector - 

3 -  41:d0:05  - top left detector - 

4 -  41:b4:0b  - top left detector -  nn bias

5 -  42:0d:0c  - top right detector -  pn bias

6 -  41:0d:16  - top rightdetector - 

7 -  41:b4:16  - top right detector - 

8 -  41:ba:2b  - top right detector -  nn bias

9 -  41:d0:0e  - bottom left detector -  nn bias

10 -  41:d8:2b  - bottom left detector - 

11 -  41:d7:cc  - bottom left detector - 

12 -  41:d7:c2  - bottom left detector -  pn bias

13 -  41:ba:22  - bottom right detector -  nn bias

14 -  41:ee:72  - bottom right detector - 

15 -  41:a0:71  - bottom right detector -

16 -  41:ee:71  - bottom right detector -  pn bias

Found two leaks in the welding of the manifolds, marked them in tape. Manifold to be repaired on Monday. Remember to re-install missing hoses, which are  in a bucket in the cave.

See attached how it is supposed to look like.

Left hand hose (inlet) was too short and was cut to dismount the manifold. Davide will obtain a new tube of the same type and mount it for us. NOTE THAT THE INLET connector (BLUE manifold) was leaking. Unclear if this was the hose or poor plumbing.

Installed cable management system that was never used during the last beamtime. Started to thread cables through it. There should be sufficient space to re-install the manifolds with the cable tray in place. If this is difficult, the tray is installed with zip ties only so altering position should be relativly straightforward. The mounting points of the outlet manifold on the CARME chamber can also be rotated around to give a bit more space.

Cleaned up some boxes and moved heaters and some empty boxes to the CRYRING roof.

Connected all FEEs.

The two top fees corresponding to the bottom right detector are connected to damaged flexi rigid PCBs. The top one is missing an pin that should not be connected to anything, while the bottom one has a slightly cracked connector and is missing the top left pin. Spares should be in Edinburgh.

Found that the flexi rigid PCB connected to the bottom most FEE of the bottom-left detector has a damaged ground lemo connector. Possibly pulled during mounting? The bias cables were off most of the time. Seems to bias fine using the other bias lemo, but not ideal.

Attached, a V-I plot of the four detectors being biased. Note bottom-left was only biased to 120V vs. 150 since it shows relatively high leakage current. Time is wrong - bias was given over ~2 minutes. Unclear why the x-axis is incorrect.

Leakage currents for all detectors, and especially bottom-left and bottom-right drop significantly waiting a sufficently long amount of time, e.g. down to ~5.5 uA after 15 minutes.

To create this plots in case it is needed.

ssh to CARMEbakingpi

cd Programs/caenlogger

python3 caenlogger.py

This will capture the data and pass it to the server (carme-gsi) in ~/caen_current.dat where they will be APPENDED. Delete / save / move the file from the CARME server if required. Backups are in Programs/caenlogger/bias_logs

THEN Bias on

THEN

ssh carme-gsi

cd Programs/caenlogger

gnuplot plot_current.gp

After discussions with Davide, changed the holes in the FEE holders for the bottom-right detector to slots in order to slightly change the angle that the FEE inserts into the flexi rigid PCB. This was sufficient, with some difficulties, to insert both FEEs into the flexi rigid.

Attempted to finally mount the last two fees, the top two for the bottom-right detector, which should have been very easy. Somehow managed to break one pin on each PCB in similar spots. One is in the third column (not in use), and one is in the fourth column (in use). This latter PCB connector was unfortunately dropped while trying to dismount it, and the ERNI connector cracked. That connector can be used anymore? Cannot find spares in GSI, must be in Edinburgh?

Dismounted all the hoses from the manifold, and starting to remove teflon from the plugs. Will use instead gaskets + anti-sieze compound. Quite a number of plug thread are damaged, likely in welding. Unclear if this was the reason behind the leaks. Should be done with the manifolds tomorrow.

Mounted water manifold on CARME with help from GSI plumber. Connected all the hoses with Swagelok self-locking connectors. Tested for water leaks - it leaks from nearly every port. The issue appear to be the connections between the manifold and the plugs, as opposed to the plugs and the hoses which do not leak.

Will try to find a solution tomorrow.

FEEs connected from bottom-left, top-left and top-right detector.

Top right detector showed same behaviour described in previous ELOG entry. Removed all jumpers from PCBs. Beahaviour is gone.

Removed all jumpers from flexi-rigid PCBs for bottom-left detector. Behaviour is improved, but not gone - still 13 uA at 150V. Around 3.5 uA at 120V with no conditioning - that may be the working point.

Missing

- Power cables and ethernet cables for half the fees

- Fix leaks on water manifold

- Fix / change / re-arrange fee holder for bottom-right detector to avoid it fouling on CARME frame.

Started mounting some FEEs. We ran into some mechanical issues due to the new ERNI connectors on the new flexi-rigid adaptor PCBs. Davide skimmed 6.5 mm off the edge with the groove (the groove is gone). This is suffiicent to support the flexi-rigid and in spite of our earlier concerns, the flexi-rigid can be mated/un-mated with the FEEs without major alignment issues.

We still have issues for the bottom-right detector, where the FEE holder will just not fit - will probably figure something out with Davide.

We observe a peculiar issue with the bottom-left detector. At 150V, the leakage current for this detector as tested with just the adaptor cards on the feedthroughs that carry the bias (no FEEs) is of the order of 3 uA.

We mounted all four flexi-rigid PCBs - still 3 uA.

We mounted the FEE that slots into the bottom-most feedthrough (which corresponds to the n-n bias). Still 3 uA.

We mounted the FEE that slots in to the second bottom feedthrough (not corresponding to bias). 15 uA! Upon lowerint the bias, the leakage current goes to zero around 30V as opposed to 0V like all the other detectors, and like this detector when this particular FEE is not mounted.

Tests were performed exchanging all PCBs, and all FEEs. The same behaviour is observed. It is not an issue with the FEE or the PCB. We suspect some cross-contact between detector bias and some strip that feeds into the second FEE? In any case, it is most likely a vacuum side issue - nothing we can do now.

The detector can be biased to 80V or so without major issue, and it appears this behaviour improves over time, i.e. leaving the bias on reduces the leakage current dramatically so it may even be possible to reach 150V.

See plots attached. Note in 2nd plot the plotting script has some issues - detector names are correct until the bias in Ch#2 is brough to 150V, then the colours are incorrect. Only Ch#2 was being changed. Note the drop in leakage current by a factor 2 just increasing the bias to 150V for a few seconds and returning down.

Davide extracted the stuck blind plugs and re-threaded all missing ports. Completed manifold assembly, except for main inlet/outlet - left for plumber.

Cut 8x2 2m hoses and assembled with Swagelok quikfit and teflon ferrules.

We're missing back ferrules in brass for the repaired fees. It should be possible to buy them from GSI.

Attempted assembly of fee, Flexi rigid and black delrin support on bench. Davide shimmed the black delrin supports by 6.5 mm from ridge. They now fit length wise on new adaptor cards. Unfortunately, the decision to flip the connector means the Flexi rigid is no longer at the correct height for the erni connector in the fee. See attached.

Inserting the Flexi rigid without the black support is too dangerous, and defeats the point of having rails. Will probably mount Flexi rigids tomorrow on black support, not screw into the fee holder, and align by eye. Tried once and it works - see last two attachments - but it will have unclear impact on the ease to unmount the fee without damaging the Flexi rigid and will make mounting fee holder on flanges harder. No alternative solutions in current timeframe.

Left bias in overnight. Leakage current decreased and stabilised. See attached. Bias off as we prepare to mount the fees.

Assembled most of the connectors on the new (green) manifolds. Two blanking pulgs stuck when mounting - cannot remove them or tighten them. Swarf? Will ask Davide's help tomorrow. Cannot use the manifold until this is fixed.

Checked FEE assembly in cassette. Need to shorten black Delrin supports by ~6 mm. Holes should end up in the correct position thanks to rails being effectively longer (same length, different hole position on FEE cassette). Will ask Davide to skim one if possible. If not, will have to mount without supports.

Finally managed to get the CAEN program working to control N1419 remotely from Baking Pi. Plotting bias and leakage current overnight to test stability. See attached. IE514 sensor off for these tests.

Biased detectors this morning to 150V, the leakage current for all detectors appears stable and is ~3.5 uA. We have also replaced the CAEN bias module so that all channels are now functional. Detectors are connected as follows;

CHN0 -> Top left

CHN1 -> Top Right

CHN2 -> Bottom Left

CHN3 -> Bottom Right

Reconnected the motors and moved the detectors while biased. No observable change in the leakage current during movement at 150V. An increase in the pressure of the electron target was observed during movement (up to 1e-9 mbar). This increase was only momentarily, and the pressure recovered after a couple of seconds. We expect the pressure increase from movement to decrease over time.

Removed tent, octagon, Neg cables.

Disconnected and removed Baking Pi, TC08, thermocouples.

Tested new rails, plates, fees - it fits. Need to check on the flange next.

Will soon turn off CARME IE514 gauge to bias test the DSSDs.

All four detectors were bias tested using the new flexi-rigid adaptor cards. Note the LK-1 jumper was removed from the adaptor cards so that 'open line' was observed between the bias lemo and the ground. Attachment 1 shows VI curves for all detectors. The maximum leakage current for all detectors appears lower than previous bias tests eg elog 400 -> temperature was ~17C today compared to ~20C for elog 400. We also performed a bias test using the old adaptor cards to see if there was any difference between the old and new cards. No significant difference was observed. For the top left detector we initally observed a significantly large leakage current (4.2 uA at 20V, 8.7 uA at 30V) which had ~1 uA fluctuations. We left for 5 minutes to see if it stabilised and the leakage current suddenly dropped to what is shown in the plot. This leakage current then appeared stable for the rest of the test. Perhaps this effect was observed by Tom but for the top right detector in elog 421?

We plan to connect the bias as we did in the 14N+d measurement so that we can monitor and plot the leakage current over the weekend.

Local power outage at the CRYRING today, while JG was trying to activate the ion pumps. Unlcear what caused it.

Valve on scroll worked as intended, but CARME reacehd 1E-7 mbar from turbo (?) venting.

Power restored. Pressure back in the 1E-11 mbar range, decreasing.

Temperature still well above room.

09:40 - Found temperature and pressure stablised, but too high to comfortably activate NEGs closest to detectors. Detector temperature around 90C. This was expected. Ramped down UHV1400 #1,2,3,4 to P=50W (200C?). Ramped down heaters to 100, 80, 100C. Ramped down heating jacket to 60C.

10:00 - Activated set #5 (x2) at 80W tramp=30, thold=infinity; set#6 (x3) at 120W rest as #5. This is different from previous procedure because we have 4x DSSD but sensor only one one of them. It seems less dangerous to heat up everything at once so that the one TC we have is hopefully representative of the situation.

10:15 - CARME cooling. No visible effects on temperature. Tried P#5 100, P#6 150 W. (500C roughly?) Will probably have to decrease.

10:25 - Detectors getting hotter quickly, but still below 100C. No changes for now.

10:35 - As expected, detectors are getting too hot, too quickly. Decreased power to 60, 90 W

10:43 - Ramped down #5,6 to 40, 60 W. Should be around 200C at equilibrium.

10:45 - Also decreased #1,2,3,4 to 40W, and D2000 to 150C.

10:52 - Further decreased #5,6 to 10, 15W.

11:04 - Temperature back under control

11:10 - Detectors actually cooling now. Increased #5,6 to 20,30 W.

11:18 - Detectors still cooling. Increased #5.6 to 30,45W. If stable plan to leave like this until later this afternoon.

13:23 - Temperatures stable. Increased #5,6 to 40, 60 W. Decreased heaters to 80,80,80 C. Decreased jacket to 40C. Opened the tent partly to connect the vacuum division non-bakeable ion pump cable.

13:35 - Ion pump cable connected and tent closed as best I can. Interestingly, the pressure is going up probably as a result of the detector/kapton cables temperature going up due to the slight increase in #5,6 power.

14:15? - Graziano S. flashed the vacuum divison ion pump.

14:25 - Pressure keeps increasing slightly. I am taking this as a sign the kapton is outgassing, which is being made to out gass which is good. Decided to leave temperatures as they are until later today and start cooling down in the late afternoon / evening. Decreased slightly #5,6 to 34, 51W. Increased D2000 to 200C. Will leave like this if stable.

15:00 - Looks stable. See attachment 3. Leaving for a few hours, before proceeding to gradual cool down overnight. Will ask Jan for help in turning everything really off.

18:00 - All NEGs off. All apadev 10&11 channels to 40C. Ion pumps remain off. Asked JG to come tomorrow late morning and turn the apadev channels off and the ions pumps on.

9:00 - Michael's online vacuum pressure plot is no longer working - an old image is being displayed. CARME temperatures around 80-85C. Lowered heater temperatures to 150, 100, 150 C for safety. Lowered jacket temperature to 80C

9:15 - Flashed ion pumps several times. Small pressure increase, up to ~7E-9 but not macroscopic

9:30 - Started D-2000 #1,2. T=400, tramp 30, thold 90 (this was a mistake 1,3 are behind the detectors, 2,4 are to the side. They should ideally be activated together. Got confused. Not a big deal.)

9:50 - Online vacuum plot is working again. Pressure changing, internals around 80C

10:00 - Internal temperature still stable at 80C. Started D-2000 #3,4. T=400, tramp 30, thold 90

11:30 - For unclerar reasons the pressure has been increasing over the last half hour, after the four NEGs were activated. Nikos and the alignment group were adjusting the feet of the interaction chamber to improve the alignment. Hopefully this is not a leak. Section 10 was apparently vented overnight, and may be in air at the moment.

11:45 - D2000 activation complete. Set temperature to 200C for all four of them. Altough the temperature is still >375C, the pressure drops very quickly. This is good, but I have not observed this behaviour before.

13:10 - Pressure and temperature mostly stable. Turning on UHV1400 groups #1, 2 with at P=250W, tramp 30s, thold 90s.

13:35 - No effect on DSSD temperature. Increasing P->300W as per previous activation procedure.

13:43 - Still no sizeable effect. Increased P->350 W

15:00 - Completed activation of UHV1400 sets #1,2. Set power to 100W. Activated sets #3,4 at P=250W, same settings as other two.

15:30 - Increased UHV1400 #3,4 to P=300 W. Temperatures OK.

15:37 - Increased UHV1400 #3,4 to P=350 W. Temperatures increasing but still acceptable.

16:06 - Temperatures are starting to get a bit too high. Decreased P->300W. Also decreased heaters to 125, 80, 125C and baking jacket to 70 C.

16:26 - Decreased UHV1400 #3,4 to P=250W.

17:05 - Completed activation of UHV1400 sets #3,4. Set power to 100W. Planning to leave stabilising overnight.

10:40 - Status as attached. Heaters setpoint/read at 250 C, 150 C, 225 C. Power stable at 53%, 41%, 63%

10:45 - Informed HKR ramp down / pump activation is starting for CARME only. Setpoints to 200, 125, 200 C. Monitoring slow ramp down.

14:10 - Heater temperatures reached the set points. Power stabilising. CARME internals temperature dropped to around 100 C and still falling. Waiting until later today to further reduce heater setpoint. Will probably aim for 80 C before beginning activation.

15:45 - Heater setpoints to 175, 100, 175 C

15:50 - Interaction chamber jacket setpoints to 100C

18:00 -  CARME temperature decreasing, not stable yet. Will check later tonight.

20:43 - CARME internals around 85C, not quite stable still. Waiting overnight.

09.40 CARME IE514 1.79e-8 mbar, ambient temperature 20.7 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3

      No change to ELOTECH R4000 set point

09.35 CARME IE514 1.95e-8 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3

      No change to ELOTECH R4000 set point

17.45 CARME IE514 1.91e-8 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 4-6

      No change to ELOTECH R4000 set point

11.20 CARME IE514 3.53e-9 mbar, ambient temperature 20.6 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3

      Change ELOTECH R4000 set points for CARME heaters #1 and #3 to 200 deg C, heater #2 to 150 deg C

14.10 CARME IE514 6.12e-9 mbar, ambient temperature 20.7 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 4-6

      Change ELOTECH R4000 set points for CARME heaters #1, #2 and #3 to 225, 175 and 225 deg C respectively.


18.10 CARME IE514 1.92e-8 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 7-9

      Change ELOTECH R4000 set points for CARME heaters #1, #2 and #3 to 250, 150 and 225 deg C respectively.
      All other ( active ) ELOTECH R4000 set points ( interaction chamber etc ) to 130 deg C.

20.25 CARME IE514 2.14e-8 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 10-12

      No change to ELOTECH R4000 set points

10.50 CARME IE514 7.14e-10 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 1-3

      Change ELOTECH R4000 set points for CARME heaters #1 and #3 to 125 deg C

14.20 CARME IE514 8.25e-10 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 4-6

      Change ELOTECH R4000 set points for CARME heaters #1 and #3 to 150 deg C

18.30 CARME IE514 1.29e-9 mbar, ambient temperature 20.7 deg C

      CARME bakeout monitor, ELOTECH R4000 temperature controller front panel and Grafana bakeout dashboard- attachments 7-9

      Change ELOTECH R4000 set points for CARME heaters #1 and #3 to 175 deg C and heater #2 to 125 deg C

09.50 CARME IE514 9.0e-11 mbar, ambient temperature 21.3 deg C

      CARME bakeout monitor and ELOTECH temperature controller - attachments 1 & 2


10.15 Commence bakeout ramp
      Set all ELOTECH PID temperature controller zones ( channels ) to 50 deg C
      Expect all non-CARME zones to reach temperature set point quickly. There will be a delay for the TCs corresponding to the CARME heaters but the internal CAME TCs 
will respond more slowly- will observe response of CARME TCs over time.

10.35 ELOTECH temperature controller - attachment 3

11.10 CARME TCs change from c. 25-28 deg C to 28-35 deg C

11.15 Set all ELOTECH PID temperature controller zones ( channels ) to 100 deg C

12.15 CARME IE514 1.39e-10 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor and ELOTECH temperature controller - attachments 4 & 5


14.20 CARME IE514 3.62e-10 mbar, ambient temperature 20.8 deg C

      CARME bakeout monitor, ELOTECH temperature controller front panel and Grafana bakeout dashboard- attachments 6-8

15.20 Whilst all of the ELOTECH temperature controller TCs are at their current set point ( 100 deg C ), the CARME TCs are not yet at equilibrium. Plan to leave system 
in current state until tomorrow morning. Assuming CARME is at equilibrium will then increment ELOTECH temperature controller TC set points.

17.50 CARME IE514 6.59e-10 mbar, ambient temperature 20.6 deg C

      CARME bakeout monitor, ELOTECH temperature controller front panel and Grafana bakeout dashboard- attachments 9-11

10.20 CARME IE514 8.6e-11 mbar

      CARME bakeout monitor and ELOTECH bakeout controller status - see attachments 1 & 2

      The CARME bakeout monitor shows recovery from test yesterday evening. The ELOTECH controller was switched to manual mode for the 3x CARME zones and 5% power selected 
for 45 minutes. CARME TCs increased from mid-20s to high 20s/low 30s over a period of 45 minutes. At the conclusion of the test power was set to 0% for all 3x CARME zones 
and the mode changed from manual to controlled.

16.55 CARME IE514 8.2e-11 mbar

      Vacuum pressure increased slowly overnight from c. 6e-11 mbar yesterday to c. 8e-11 mbar today following low power startup tests of the bakeout controller heating 
the CARME interaction and detector chambers yesterday and today.


Attachment 1 - bakeout controller config courtesy Anton Kalinin

Attachments 2 & 3 - bakeout controller summary displays and CARME bakeout monitor display c. 17.00 today

The 3x CARME heaters are connected to controller #4 zones # 1-3, i.e. lower right display, zones 1-3, mains fuses F9-F11

17.30 3x ( of 4x ) SAES D-2000 ion pump controllers ( SIP modules ) switched off. Fourth controller was already switched off and SHV cable disconnected from rear panel of 
SIP module.

09.07 IE514 pressure 6.4e-11 mbar, ambient temperature +20.3 deg C

      Using appc218 ( account carme ) workstation by the CARME 19" rack 
     
      ssh pi@carmebakingpi

      Re-connect to bakeout monitor app 

      screen -dR

      See attcahment 1


12.02 Vacuum group ion pump disconnected and RGA removed from CARME chamber -  outside of CARME bakeout tent 'closed' - see attachments 2-4

      Vacuum group IE514 to be disconnected


14.45 Vacuum group disconnect their IE514

      Inside of CARME bakeout tent closed

      Photos of the CARME bakeout tent inside and outside CRYRING - see attachments 5-7  

17.33 IE514 pressure 6.4e-11 mbar, ambient temperature +20.8 deg C

      The thermocouples on the 3x groups of heater elements have been detached from direct contact with the heating element and now float abpove the heating element by 2-
3cm - see attachments 1 & 2

      The vacuum group IE514 and Ametek RGA are still attached to CARME - see attachment 3. Have requested vacuum group remove them.

      The 'air side' of the Be window on the interaction chamber is under vacuum provided by small Agilent scroll pump.

      

Attached are plots for the previous bakeout of CARME which may aid in the bakeout to come in the following week.  

Plots relate the heater temperatures and heater powers with the chamber temperature (internal floating thermocouple) and pressure inside CARME. 

Attached are the plotted curves from vacuum and heater temperature (actual and set values from ISOHEAT controllers) during the bakeout process. Channel assignment as per post 433.

Found CARME in XHV at 1.1E-11 mbar. Chamber temperature around 30C cooling slowly.

Closed GV to top turbo. Pressure goes up but appears to recover around 2.5E-11 mbar, on line with several previous observations that sectioning off the turbo results in a higher reading in the IE514.

Left turbo on. Remember to not turn it off when removing the tent.

9:10 Set heaters temperature 300 -> 250 C in preparation for cooling down and to help keep DSSD temperature down. Started activating set 6 (3 X DSSD) at 120 W as per previous procedure.

9:15 Realised previous choice is a mistake in the current configuration as the DSSD TC is closer to set 5. Set 6 off. Set 5 to 60W. No effects in temperature. Ramped slowly to 200W. No immediate effect in temperature, while vacuum goes up.

9:30 Started activating set 6 at 300W (=100 per module). This should give us the best feedback on DSSD temperature from the only TC we have since they should all be at similar temperatures. 

9:40 DSSD TC shows temperature decreasing rapidly (-17C/h). That's nonsense. The TC cannot be working properly, which means activation is now quite dangerous. Looking at strain relief TC instead from now, which is still at 85C. Set 5 down to 30W for safety while set 6 finishes ramping up.

9:45 DSSD TC still reading nonsense at 35C cooling by 20C per hour. Strain relief TC at 85C heating up by 10C per hour is more realistic. Vacuum worsening as set 6 reached 300W. Immediately ramped down to 120W. Leaving for 30 minutes, or less if strain relief temperature increases too much.

9:57 Strain relief heating quickly at 90C. Decided to turn off ALL negs for safety. Set heaters to 200C.

10:18 Strain relief temperature finally slowing down heating rate. DSSD TC beings displaying increasing temperature. The TC wire on the TC-08 module is clearly damaged.

After lunch, turned on the four ion elements of the D-2000. Pump#4 is not working, and apparently module #2 also has issues. Used module #4 on pump#2 to get three working pumps. Others will have to be investigated when the tent is removed and we can have some access to the pumps.

Tried closing gate valve to turbo. Vacuum does not seem to really improve. Opened. Will try again tomorrow morning.

Vacuum division ion pump on as well.

Found CARME at 50C, a bit cooler than expected, probably due to invasive tent changes yesterday to mount missing wires. Increased heaters temperature to 300C

9:35 Started D-2000 #1,3 (behind the DSSD). T=400, tramp 30, thold 90

11:20 Set D-2000 1,3 to 200C. Turned on D-2000 2,4 as above 

13:15 Set D-2000 2,4 to 200C. Turned on UHV1400 set 1 at 250W, tramp 30, thold infinity (will ramp down manually as required)

13:20 No appreciable effects on DSSD temperature. Turned on set 2 as well, which should be mounted close nearby.

13:45 Both sets reached 250W. No effects on detector temperature. Increased to 300W. Vacuum gets slightly worse, but recovers quickly. Not worth further increasing power. Leaving for 90 minutes.

15:20 Strain relief TC at 75C quite hotter than detector TC at 35C. Might be normal. Vacuum division IE514 must have been degassed remotely? Decreased set 1,2 to 75W. Turned on sets 3,4 to 250W as above. 

15:45 Sets 3, 4 now at 250W. Detector TC heating quickly at 13C/h but nowhere near dangerous temperatures yet. Decreased sets 1,2 to 50W. Leaving for 90 minutes.

17:15 Sets 3, 4 to 50W. Slightly worrying temperature difference between detectors and strain relief around 65C. Different materials and different positions could explain this.

17:40 Oddly, detector temperature now going up sharply (temperature diff. down to 40C) since the uhv1400 power was decreased. Cannot think of s logical reason,  it may just be a coincidence and heat transfer is catching up.

Leaving overnight. Will turn on the last two groups of UHV1400 tomorrow morning.

We need to connect the non-bakeable (max 80C) wire of the ion pump belonging to the vacuum division, and we also need to connect the two newly-repaired NEG cables to the D2000 modules. That requires partly opening the tent to gain access.

Set heaters temperature from 450 C -> 400 C - CARME floating TC temperature goes from ~98 C to ~88C.

Set heaters temperature to 350 C. Left to cool over lunch.

 Connected GSI vacuum division ion pump and IE514

Connected D-2000 upstream left/right with repaired cables

Flashed all ion pumps. Ion pump #4 was flashed a couple of times, but has now started arcing. The issue is not with the module - either the wire or the ion element are damaged.

Set heaters to 300 C. Left to cool a bit more overnight. Planning on NEG on tomorrow.

Repaired Neg wires for D2000 with Oemer's help.

Cable #2 is fine. 

In Cable #4, wires 1 and 2 are swapped but it's impossible this happened when the connector came apart. The pins are crimped and secured with a screw. Most likely it was sold like this and there's no difference between wire 1 and 2 (same voltage).

Edit: SAES confirmed 1&2 are interchangeable.

14/08/23

Temperature in the baking volume is ~ 42 C and the pressure is 4.6e-8 mbar. Current heaters set point is 135 C. This will now be increased to 200 C to start increasing the baking temperature more significantly.

Some issues with the interaction chamber heaters were noticed this morning. This included very large increases in temperature despite only small increases in the setpoint. When this occurred the heater channels were simply turned off. Channel 3 on the interaction chamber (main jacket on the centre of the chamber was also observed to smoke slightly). This smoking was seen when the temperature for channel 3 was ~ 70 C. 

Changing the settings of these heaters appears to have resolved most of the issues. The heaters now ramp in a much more controlled manner and remain roughly constant at the setpoint value.  The interaction chamber heaters were all increased to 70 C with no issues observed. Channel 3 also appears OK.

The CARME heaters settings have also been changed and now the heaters temperature and power output do not oscillate as observed previously. Power output per heater is approximately 15 % of total at heater temperatures of 220 C, and this value remains consistent over time. The temperatures inside the baking volume are now ~ 50 C with the pressure equal to 7e-8 mbar. Heating has not been the priority while investigating the issues observed with the heaters.

As a precaution CARME will now be maintained at the 50C level. The interaction chamber and e-target temperatures have been set to 50 C also. If the system remains stable overnight we will again begin increasing the temperature in the morning.

15/08/23

Temperatures across the whole of YR09 have remained very stable overnight. Temperature of CARME has increased slightly and is now ~ 55 C. Pressure is ~1e-7 mbar. A brief lincrease in pressure was observed yesterday due to the de-gassing of the GSI ion pump on CARME. Plan is to now increase the temperatures of YR09 to the 100 C level 

Temperature is ~ 70 C. Heating is slower than expected as I am aiming to minimise thermal gradients across the chamber, which was previously done automatically by our baking code. Current heater temperature values are ~ 320 C. I have increased the temperatures across YR09 to 70 C to match carme . Pressure in CARME is 2.1e-7 mbar.

16/08/23 

The temperatures of the CARME heaters were further increased to ~ 420 C to further increase the chamber temperature. Average chamber temperatures of ~93C achieved. Heater temperatures can be pushed to 450C which should allow us to achieve 100 C. Will allow chamber to equillibriate as temperature gradient between top and bottom is quite large.

17/08/23  

Baking will be unsupervised over the weekend. To remain safe, the berylium window and the interaction chamber will be kept at a temperature of 50C. Carme will be reduced to ~60C during this period.

Attached are plots for the bakeout period concerning this week.  

12/08/23

Baking testing. Aim to find relationship between heater temperature setpoint and the temperature of the chamber and floating temperature in the baking volume. Behaviour of the heater tempertures and ability to control the heating is also required. Ambient chamber temperature ~22 C. Interaction chamber temperatures will be raised to the level of the CARME chamber throughout, starting temperature of the interaction chamber with heating off is 28 C. P = 7.5e-9 mbar

CARME thermocouple temperatures can be read from the monitoring code which is currently running in a screen session on the baking pi. Heater temperatures and pressure in YR09 can be read from Grafana.

15:40 CARME heaters turned on, set point 50 C. Ramping is ~ 1C per minute for the heaters. 

16:00 Thermocouples inside baking volume show small increases. Setpoint increased to 60 C.

16:10 Setpoint increased to 80 C.

16:30 Setpoint increased to 100 C.

16:45 Setpoint increased to 120 C

17:00 Setpoint raised to 150 C. Average chamber temp ~ 25.2 C, bottom of the chamber is ~28C. 

17:45 Setpoint was maintained at 150 C, temperatures of the heaters continued to rise past this setpoint and were floating about 200-230 C with large variations in the temperature. At lower setpoints the heater temperature appeared to rise linearly with the 1 C per minute. I do not believe I currently have control of the heating. Average chamber temp 28.8 C with bottom of the chamber ~35-37 C. Heating has been turned off while I grab some food. P = 1e-8 mbar

Next test will be to try and maintain a consistent heater tempreture for a longer period of time, probabably at a lower set temperture. 

13/08/23

10:00 Heater setpoint to 50 C. Will maintain at this level for a while to look at increase in chamber temps and see if heater temp remains stable. P = 8.52e-9 mbar

11:47 Heater temperatures have been constant at ~ 55 C for the last hour. Little heating observed in the chamber, requires much larger temperature to heat the baking volume. Setpoint increased to 100 C.

13:10 Heater temperatures have been constant at ~103 C for the last  40 mins or so and appears stable. Temperatures are rising at a steady rate but temps are still low. Interaction chamber heating jackets activated to be a same temperature as CARME. Will require higher temperatures to heat the baking volume.

16:15 Heater temperaturtes have remained constant at ~103 C. Temps inside the baking volume remain low, Increasing heater temperature to 135 C.

18:30 Heaters temperatures remain stable. Larger fluctations are apparent than at a setpoint of 100C with temps between 140 and 150 C. Chamber temperatures increasing avg is ~ 35C, was aiming for 50C over the weekend. Increasing setpoints to 170 C.

20:50 Heater tempretures are stable. Average chamber temp is ~ 40 C. Interaction chamber heaters set to 40 C to keep constant with CARME. Pressure has increased to 2.9e-8 mbar. Heater power outputs are visible in last image, heaters currently turn on at ~80% max power about twice every 5 mins. I expect temps of 250-300 C are required to obtain significant temp increase up to 100 C on the chamber. Chamber temps appear to be fairly stable at this point, will leave for now and check back in a few hours.

23:00 Heater setpoint temp reduced to 135 C to maintain temperatures inside the baking volume overnight with no increase. Heater power has now reduced to < 50 % full power when the eaters are on. Pressure in the chamber is 4.4e-8 mbar.

I believe I now understand the heating system and plan to increase the chamber temperature throughout the day tomorrow. Aim is to get close to full bakeout temperatures.

Heater channel layouts for the interaction chamber and carme in attached documents. 

Updated thermocouple positions; (front section is closest to gas-target, rear section is moving detector end)

• 1-1 Internal TC 1
• 1-2 Internal TC 2
• 1-3 Internal TC 3
• 1-4 CARME - top of the front section
• 1-5 CARME - bottom of the front section
• 1-6 CARME - top of the mid section
• 1-7 CARME - middle of the mid section
• 1-8 CARME - bottom of the mid section
• 2-1 Float - bottom of mid section 
• 2-2 CARME - middle of rear section 
• 2-3 Float - middle of the front section
• 2-4 CARME - bottom VAT valve
• 2-5 Float - middle of the rear section 
• 2-6 CARME - Top elbow
• 2-7 Float - top of the mid section
• 2-8 CARME - rear beam pipe

Thermocouple posiitons have been updated in the monitoring code, including the averages for the CARME chamber. 

09/08/23

Attached is the current pumpdown plot taken from grafana. 

I have started to re-work the baking tent in order to close gaps from its initial installation. The heaters work and were tested to a temperature of 50C. Testing is required to gauge the heater temperature required to heat the baking volume, we suspect the heaters will be several hundred degrees. 

11/08/23

Baking tent has been fully constructed again, see photos attached.  Some thermocouples have been re-positioned, new thermocouples positions are given in elog 433. GSI ion pump cable has been connected. Roughing pump on the outside of the berylium window has been connected and berylium window is at < 10 mbar. 

10:30  IE514 1.80e-08mbar

Most of the CARME is covered by the baking tent. The tent needs to be closed and a bit covered from the front (upstream), end (downstream), and bottom side. TCs are labeled with a marker in the sequence 1-1 to 2-8.

1-1 Internal TC 1
1-2 Internal TC 2
1-3 Internal TC 3
1-4 CARME front top
1-5 CARME front bottom
1-6 Top hanging middle
1-7 CARME middle middle
1-8 CARME middle bottom

2-1 CARME middle top
2-2 CARME back middle
2-3 Elbow
2-4 Valve
2-5 Magnet pipe
2-6 CARME back top
2-7 CARME back float
2-8 CARME back bottom

Also, TC extensions would be needed to connect to TC-8 modules.

09:26  IE514 1.96e-08mbar

10:10  IE514 2.0e-08mbar

Upstream part of the CARME is covered.

11.40 Pirani 1.00e-3 mbar IE514 2.23e-08mbar

15.15 7d/24h vacuum plots

11.15 Pirani 1.0e-03mbar IE514 2.72e-08mbar

16.35 Pirani 1.0e-03mbar IE514 2.61e-08mbar

10.20 Pirani 1e-03mbar IE514 3.26e-08mbar


12.53 CARME Leybold IE514 gauge OFF


Top right DSSSD bias -20V leakage current -10.51uA


Three internal ThermoCouples (TCs) -labeled 1, 2, and 3 in attachment 1 - were attached and tested on the TC-08 boards. Only 2 showed the ambient temperature, see attachment 3. 1 and 3 showed some strange numbers, see attachments 2 and 4 respectively.


15.28 CARME Leybold IE514 gauge OFF. Top right DSSSD bias -20V leakage current -10.44A


All the TCs are attached to TC-08 modules. See attachments 5-7. Once all TCs were plugged into TC-08 modules, they were fine.


TC-08 A0067

1. Internal TC 1
2. Internal TC 2
3. Internal TC 3
4. CARME front top
5. CARME front bottom
6. Top hanging middle
7. CARME middle middle
8. CARME middle bottom



TC-08 A0066

1. CARME middle top
2. CARME back middle
3. Elbow
4. Valve
5. Magnet pipe
6. CARME back top
7. CARME back float
8. CARME back bottom

Heating Jackets placed beneath the heaters. See attachments 8-10.

09.20 Pirani 1.00e-3 mbar IE514 3.90e-8 mbar

      Today - install TCs, connect to Pico controller and test

10.00 Bakeout tent setup guide (draft) - attachment 1

14:30 Tested all TCs and are fine

05.25 Pirani 1.00e-3 mbar IE514 3.71e-8 mbar

09.28 Pirani 1.00e-3 mbar IE514 5.45e-8 mbar

12.10 Bakeout tent frame installed
      SAES UHV1400 NEG pump power cables #1-6 installed
      See attachments 1 & 2

16.35 Attachments 3-6
      upstream baseplate
      3x sets of heaters beneath CARME chamber connected to CRYRING heater/TC manifold - attachments 7-8

      
16.45 Pirani 1.00e-3 mbar IE514 4.80e-8 mbar


17.10 SAES D-2000 #1 downstream, outside   NEG power + HV ( attachment 9 - OK cable connector )
      SAES D-2000 #3 downstream, inside   NEG power + HV
      SAES D-2000 #4 upstream, inside   HV
      SAES D-2000 #2 upstream, outside   HV

2x ( of 4x ) SAES D-2000 neg power cables were broken - forward-shell detached (unscrewed ) from back-shell remaining attached to D-2000 neg power connector. 
Re-assembly is straightforward but it is unclear how the 6x female sockets are aligned with the connector keys of the forward-shell (attachments 10-11 cf. attachment 9).
Until this is understood these 2x SAES D-2000 neg power cables should not be used.

09.16 Pirani 1.00e-3 mbar IE514 8.77e-8 mbar
      Leak tester c. 5e-12 mbar.l/s (leak tester valved off)

09.48 Pirani 1.00e-3 mbar IE514 8.67e-8 mbar
      Leak tester c. 3.5e-12 mbar.l/s (leak tester valved off)

10.33 Pirani 1.00e-3 mbar IE514 8.55e-8 mbar
      Leak tester c. 4e-10 mbar.l/s (leak tester connected to CARME roughing line)

10.55 Leak tester remains at few e-10 mbar.l/s - we do not understand why
      With leak tester in differential mode the highest reading around the COF600 seal is c. 3.5e-12 mbar.l/s
      Following checks elsewhere on the chamber we observe c. 6e-12 mbar.l/s which presumably reflects accumulation of He around the chamber 

      Dispersing He with compressed air reduces diff mode reading to c. 2e-12 mbar.l/s

11.00 Pirani 9.80e-4 mbar IE514 8.47e-8 mbar

14.49 Pirani 1.00e-3 mbar IE514 7.71e-8 mbar
      Leak tester isolated from CARME backing line - CARME Edwards scroll pump now backing turbo.

09.15 Following overnight pumping of CARME chamber by Leybold turbo
      Pirani 1.00e-3 mbar IE514 2.83e-7 mbar

     The Leybold IE514 gauge currently in use is the CARME unit ( serial # 1054 ). The calibration data can be found at https://elog.ph.ed.ac.uk/CARME/56


09.44 Pirani 1.00e-3 mbar IE514 2.71e-7 mbar

10.10 Leak tester attached to backing line

      Valves to leak tester and turbo (connection to Edwards scroll pump in between) closed.

      Stop Edwards scroll pump with magnetic valve 'red' button - magnetic valves closes and Edwards scroll pump is switched off.

      Open valves to leak tester and then (slowly) turbo.

      Wait for leak tester to settle in e-12 mbar.l/s range. Leak tester pressure 3.6e-3 mbar. IE514 2.69e-7 mbar.

11.00 Pirani 1.00e-3 mbar IE514 2.42e-7 mbar
      Leak tester 1.8e-10 mbar.l/s

13.04 Pirani 1.00e-3 mbar IE514 2.06e-7 mbar

      Leak testing.
      Downstream DN100 flanges from CARME to dipole OK
      Lower NEG power connector feedhtrough (downstream chamber) OK
      Left hand side (looking downstream) bellows OK

      c. few e-9 mbar.l/s leak bottom left (lookimg downstream) of COF600 wire seal

      Additional torque to M16 bolts bottom left - c. 10 bolts -> 220Nm+

      c. 0.1-0.3e-11 mbar.l/s

      Further checks around circumference of COF600 seal reveal some small leaks c. e-11-12 mbar.l/s.? However background rate
      in leak tester too high for sensitive test - will await recovery to resume checking.

14.00 Pirani 9.8e-4 mbar IE514 1.96e-7 mbar
      Leak tester 4.9e-10 mbar.l/s


14.35 DSSSD test
      IE514 OFF

Ambient temperature 21.5 deg C

Top right
-10V -4uA
-20V 10uA
c. -30V > -20uA trip

Top left
-150V -5.15uA

Bottom left
-150V -4.97uA

Bottom right
-150V -6.33uA

Top right (repeat)
-20V -10uA
-25V -14uA

15.28 IE514 ON
      Pirani 9.8e-4 mbar IE514 1.87e-7 mbar

15.40 c. few e-9 mbar.l/s leak around magnetic valve - probably not an issue in terms of backing performance but may interfere with/confuse leak testing

16.05 Pirani 9.8e-4 mbar IE514 1.74e-7 mbar
      Leak tester 1.2e-9 mbar.l/s

Will leave CARME pumping with leak tester on roughing line and see whether leak rate recovers. If so, will continue leak tests tomorrow. 

18.50 Pirani 1.00e-3 mbar IE514 1.48e-7 mbar
      Leak tester < 1e-12 mbar.l/s (leak tester valved off)

Grosmantage are scheduled to arrive 10.00 to inspect COF600 seals and their fit to the COF600 flange. They may decide to adjust the seals so that they fit the flange 
under 
tension.

Once Grosmontage are satisfied with the seal and its fit we can close the CARME chamber and start pumping down. 

Attachment 1 - photo of bakeout tent parts including those adapted/modified by Davide.


18.40 Grosmontage were re-tasked this morning.

      Davide, Omer, Cosmas checked alignment of COF600 male and female flanges.

      4x COF600 seals were checked - for some seals we observed wave over a ~ 10cm section of the circumference and/or surface scratches/roughness.
      Also observed that COF600 seals appeared to be too large - consequently the wire seal would be seated well ( i.e. in contact with the flange surface )
      for the majority of the circumference but would lift from flange surface for part(s) of the circumference.
      The fourth COF600 seal seated well over all of the circumference and we decided to proceed with closing the chamber.

      COF600 flange bolts tightened sequentially 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160Nm.

      ML roughed CARME chamber slowly ( < 1mbar/s ) to protect Be window. Turbo started at 1.3mbar. Pirani gauge indicated e-3 mbar range when turbo at speed.


18.53 IE514 gauge ON pressure 4.05e-5mbar.

19.10 Pirani 1.42e-3 mbar IE514 3.02e-5 mbar

09.20 CARME chamber at atmospheric pressure as expected.

      Will open CARME chamber and inspect COF600 wire seal for similar (or other) issues to the seal removed yesterday. One possibility is that the COF600 flange 
surfaces/structures are misaligned and part of seal is 'escaping' the seal zone. Given the flanges close easily the misalignment would have to be small.

13.30 Observations

      The bolts on the upstream feet of the far detector chamber are all loose and have probably been so for some time

      Based on measurements with calipers and the insertion of shims into the *radial* gap between COF600 flange surfaces the COF600 flanges may be misaligned and rotated 
transversely by a fraction of a millimeter. The challenge is that the chamber is not designed for fine transverse adjustments and it is not easy to measure the changes.

      The Pfeiffer recommended procedure for closing COF seals is to start tightening bolts *diametrically* and then to tighten sequentially

https://www.pfeiffer-vacuum.com/en/know-how/mechanical-components-in-vacuum/connections/detachable-flange-connections/cof-flanges/

     The plan

     Adjust position of far detector chamber and secure upstream feet bolts

     Close COF600 flange using Pfeiffer recommended procedure

     Today is Friday so it will probably be Monday before we can pump the CARME chamber

13.50 Another view

     Grosmontage also inspected the COF600 seal this afternoon. They said that it was important that the seal should be installed under tension to ensure that it remained 
in position as the flanges were closed and the bolts begin to be tightened. They think the seals are a little too large in circumference but that they can shorten one on 
Monday morning. 

09.30 CARME chamber status

      Edwards scroll pump ON
      Edwards Speedivac valves #1 & #2 OPEN
      VAT gate valves OPEN

      Re-connect Leybold Pirani gauge to local display/control
      CARME chamber pressure 2.4mbar

      Scroll pump should be able to achieve < 0.1mbar - indicates significant leak

      Davide will first check bolt torques for all flanges opened during most recent vacuum cycle

12.05 Additional torque did not resolve problems
      ML test COF600 seal with isopropanol and observed increased chamber pressure

      Will open COF600 seal after lunch

13.55 COF600 seal removed - one section marked by Kapton tape shows some distortion and a burr on the inner diameter - see attachments 1 & 2. 


      ML speculated that perhaps the seal was lightly too long and a section of circumference was forced outwards?
      Vacuum surfaces cleaned with isopropanol and tissues - red/brown discoloration probably indicating copper observed

14.30 New COF600 seal installed, flanges closed, bolts finger tight, bolts then systematically torqued in small increments 

      COF600 torques finger tight, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160Nm x2
      DN100 flanges doenstream finger tight, 8, 16, 24Nm

16.40 Start scroll pump and slowly rough chamber

18.00 Roughing CARME chamber pressure flatlines c. 30mbar indicating a large leak.
      ML ran some isopropanol around COF600 flange and observed response in roughing pressure of c. 0.2-0.3mbar at c. 30mbar which appears to confirm COF600 is leaking.


      

The CARME chamber was closed and pushed back into position on the ring. 

Prior to moving back onto the ring, the detectors were bias tested and the distance between the detectors was also checked using the motors. Bias test was performed before the detector movement tests and before moving the chamber back onto the ring.  

Attached images shows the separation between the detectors when moved in togther. Separation is < 10 mm. Motors logs will be checked to place safety limits on the movement.

The chamber was pumped down. At 2 mbar the turbo was turned on, but the pressure would not decrease below 1e-2 mbar. The turbo was switched off and the pressure increased to 2 mbar. Isopropanol was sprayed on the wire seal causing an increase in the pressure. Leak on the wire seal. 

The left (inside ring) bellow for the motors rod was replaced.

Replacing the bellow involved;

• One person holding the metal plate the detectors are mounted on (cabling remains plugged in) while the operation is performed. 
• The motors box is supported by the cryring crane by its mounting points
• Bolts on the flange connecting to the chamber can then be undone. The whole motors section (rod included) is then moved out of the chamber using the crane and someone to stabilise the rod as it slides off the detector plate. 
• Once off the chamber, the steel cover can be removed by disconnecting from the flange and from the motors box. Best to perform on a table. 
• The bellow is then removed by removing the nuts on the small flange (kf 25) connecting the bellow to the box. The bolts for these bolts are very long and go through the motors box from the moving metal plate seen in the attached image. 
• Follow these steps in reverse to install the new bellow. 

While replacing the bellow, it was noticed the long bolts for the small flange were too short. It was therefore very difficult to re-attach the nuts with any torque. The thickness of the head of the bolts was shortend to effectively lenghten the bolt which was sufficient to tighten the nuts. New bolts should be bought in case of replacing the bellows again. 

The leak on the actuator arm bellows has been attempted to be sealed using UHV vacuum seal spray. The spray had the opposite to the desired effect and the leak rate increased. When spraying with helium the leak rate had increased to 1e-9 mbar l/s. After lunch a second application of the vacuum seal spray was attempted, however the leak was not sealed. The base leak rate had also increased to the 1e-10 level up from in the morning and yesterday. With the leak increasing in size and risk of a full failure, we are no longer able to move forward with the bakeout. 

The chamber has been vented and we will move forward with plans for replacing the bellow tomorrow. 

Attached plot shows the most current pumpdown.  

CARME and the interaction chamber have been pumping for ~26 hours, P=4.15e-7 mbar, attached figures show the current pump down plot in comparison to the two previous pumpdowns in the last 2 weeks and the pump down with the bare chamber in 2020. The gradient of the pressure reduction appears to be improving for each pump down, either due to conditioning of the chamber or the reduction in leaks.  

CARME and the interaction chamber were leaked tested again today. The base leak rate has reduced significantly from 1.5e-10 mbar l/s to <1e-12 mbar l/s. All flanges on the interaction chamber were tested. A leak is still visible on the gate valve, however the magnitude of the leak has decreased significantly from 2.2e-10 to 2e-11. No other leaks observed on the interaction chamber. 

All flanges on CARME checked again, no leaks observed on flanges or wire seal. Leak was observed on the bellows of the left hand side (inner ring) actuator arm. Leak is not on either the small flange box side or the large flange on the chamber, but on the bellows itself. Image attached. Leak rate is 2e-10 mbar l/s. The actuator was moved with the pneumatic motor once to observed any effects, no effect on leak rate or the chamber pressure.

 Replacing the bellows is very challenging and will likely require removing the detectors installed on the rod. Current plan is to continue with the baking and re-evaluate post bakeout. The bellows will be baked but should not experience the same temperatures as the flanges on the chamber. Future experiments do not require extremely forward angles so that the actuator arm can remain fixed in place to not cause a n increase in the leak, the leak rate can be compensated by the large neg pumping power. 

This morning the pressure achieved was 1.44E-7 mbar. Leak testing showed an overall leak rate of 1.5E-10 mbar l/s, this is below the previous leak rate but still significantly above the leak rate from elog 141 of the CARME chamber on its own. Spraying helium, a leak is visible on the VAT gate valve on the interaction chamber (inside of the ring). The leak rate increases to ~2.3E-10 mbar l/s. No increase in the leak rate was observed elsewhere on CARME or the interaction chamber. It was decided to vent again and replace the gasket and inspect the knife edges for the valve. 

The valve was removed and the gasket was replaced. Several scratches are visible on the gasket which may be the cause of the leak (or damage may have been done during dismounting). While vented, the backing line was re-organised. The scroll pump is now on the outside of the ring for easier access (see attached image), the turbo pump was rotated to move all power cables and the backing line to the outside of the ring. 

CARME and the interaction chamber were pumped down again and the ion gauge was activated. Vacuum can be followed via the vac plot or by grafana on the carme-gsi computer (anydesk required). 

26/06/23

This morning the pressure was 4e-7 mbar. The bolts on the windows and the large flange on the bottom of the interaction chamber were tightend. No leak was present on the windows following tightening. However, the leak on the rotatable flange, although decreased in magnitude, was still in the 1e-9 mbar l/s range when helium was sprayed. The torque on these bolts was 36 Nm, which is already past the 33 Nm recommendation for M8 bolts. It was decided to vent the section and examine the flange. 

Tomorrow morning the gasket will be replaced and we will begin pumping again in the afternoon. 

27/06/23

Flange was removed and examined. Several scratches on the surface of the flange including on the knife edge were visible. These scratches were sanded away by the grossmontage and the flange was remounted. CARME was pumped down in the afternoon. Pressure was in the 1.5E-3 mbar range when the scroll pump stalled causing the pressure to increase and the turbo to increase in current to keep up. Error symbol was observed on the scroll, unknown to why it stalled. VAT gate valve to the chamber was closed and all pumps turned off to be safe, P~ 1mbar. 

28/06/23

Jan started the scroll pump on  just the backing line using the gas balast to see if too much water was pumped. Scroll running fine so the gate valve to the chamber was opened and the turbo started. 

The motors were moved using the pneumatic only, in and out for several cycles to gauge the effect on the vacuum. For the left arm no change in pressure was observed. For the right arm a small increase of 0.04e-7 mbar was observed which was quickly reduced by the turbo. 

The detectors were then biased to see if movement had any effect on the leakage current (large effects were observed in 2021 beamtime). Movement of the pneumatics saw no observable change in the leakage current above normal fluctuations. 

Both motors arms had been sucked into the chamber by 5-10mm due to the vacuum before starting the movement cycle. After one movement cycle, the motors returned to their normal fully out positions and remained fully out. 

23/06/23

Pumpdown started with the scroll pump 17:15 . The turbo-pump was started 17:55. Gate valve was closed and the turbo turned of at 19:20 due to no working fan on the turbo. 

24/06/23

Ion gauge was activated at 11:56, P= 3.7e-5 mbar. Attached pump-down curves begin from when the ion gauge was activated.

The first plot is a comparison was a calculation for water outgassing in the chamber (which has many assumptions) but is a good guide on the expected 1/t decrease in pressure over time. The second plot is a comparison to previous turbo pump-downs in 2020 and 2021. In 2020 the chamber was bare with no instrumentation. In 2021, kapton and detectors were installed, but the pump down was conducted in several stages. Pressure readings are taken from the gauge reader in the cave, the vac plot viewer online appears to show a slightly different reading. 

 25/06/23

10:30 P= 7.11e-7 mbar. Opened valve on leak cart and saw a large increase in the pressure (above ion gauge level). Closed valve to leak cart, pressure recovered quickly (1.28e-6 mbar after ~ 30 mins). Pressure in the leak cart ~3e-3 mbar. Possibly small trapped volume between valves on the leak cart. Opened valve to leak cart again, no pressure increase observed in the chamber.  

11:40 Leak testing. Base leak rate ~5-6e-10 mbar.l/s.  Spraying helium on the seal between the bottom of the interaction chamber and the newly installed valve saw a large increase to  >1e-8 mbar.l/s. Closer attention suggests the leak may be from the rotatable flange on the bottom of the interaction chamber. An increased leak rate to 1e-9 mbar.l/s was also observed on the diamond window on the inside of the ring. Spraying around wire seal and feed-through flanges on chamber on the inside of the ring gave a leak rate of 6e-10 mbar.l/s. This may be a small leak, but is most likely noise on the leak detector or drifting helium to the large leak on the interaction chamber. Cannot determine prescence of small leaks while the large leaks are active. Closing valve to leak cart saw the leak level drop to <1e-12 mbar.l/s. 

Attached images show sites of the major leaks on the interaction chamber. 

Attached are images showing the messages for normal turbo-pump operation

23/06/23

The CARME chamber and interaction chamber were connected and section 9 has been fully closed. New valves have been installed on the interaction chamber, in addition to new diamond windows. A leak cart has been connected to the backing line of CARME. Before begining the pumpdown, the manual valve between the interaction chamber and the electron target was closed. 

The pumpdown was started at 17:15,  the valve on the scroll pump was very slowly opened to not damage the berylium window. By 18:00 a pressure of 1 mbar was achieved and the turbopump was activated. By 18:20 a pressure of 2E-3 mbar was achieved, the ion gauge was activated and briefly flashed 5E-4 mbar but this is over its limit so the gauge shutdown. At 19:20, 1.3E-3 mbar was achieved, the ion gauge was activated but the reading was 1.7E-4 mbar which is still over its limit. The turbo fan was not working and temperatures on the turbo were ~50C and increasing, so it was decided to close the main gate valve and turno off the turbo overnight in order to fix the fan.

A bias test of the detectors was also performed while in vacuum, T=20.5 C. All detectors show expected V-I curve and the leakage current is ~1-2 uA lower than the previous test in air, probably due to reduced light leaks. The top right detector did initially produce >10 uA at 20 V but the adaptor card was not properly seated on the p-n feed-through. Seating the adaptor card correctly yielded the expected V-I curve. Further inspection of the pins on this feed-through will be performed tomorrow.  

24/06/23

Overnight the pressure had increased to 0.8 mbar. Opening the gate valve decreased the pressure by an order of magnitude. The turbo fan was fixed and the turbo was re-activated, the pressure dropped to 1E-3 mbar level within 20 minutes.  Ion gauge was turned on after 30 minutes with a pressure of 3.7e-5 mbar. Pump down plot and comparison to previous pump downs will be uploaded in a seperate elog. Turbo pump maximum temperature reads 46C and has been consistent for several hours. 

V-I tests completed for the right hand side detectors. Leakage currents ~0.4 uA higher than yesterday which is consistent with the increase in temperature of ~ 0.5-0.7C. 

The wire seal has been tightend further to 160 Nm. Open neg feed-through flange has also been fully tightend. 

The CARME chamber was then slid back onto the aluminium frame on the ring. Two carriages were damaged during the sliding process, which have now been replaced. Carriages were replaced by lifting one end of the upper frame section using the crane by only ~1mm. This was sufficient to slide out the broken carriage and replace it (see images to be uploaded)..  It appears there is some deformation in the rails on the temporary frame as CARME is slid across, which resulted in the damaged carriages -> further refinements are required for future slidings. The height of the chamber has been checked using the laser allignment.  

The turbo pump has also been mounted to the top of the chamber . Current plan is to close to the interaction chamber tomorrow and begin pumping.  

Internal CARME installations complete. 

• New strain reliefs (flange side) installed on each cable harness.
• 2x sets of SAES UHV1400 NEG pumps installed and connected to 2x power feed-through flanges -> continuity checked OK -> 3x UHV1400 modules gives a resistance of 7.4 Ohms, 2x UHV1400 modules gives resistance of 4.8 Ohms. 
• Pins B & D open circuit wrt ground ( DMM OL > 20M ? )
• Pin C connection to ground OK 
• Internal thermocouples connected. Middle thermocouple connected to strain reliefs, right thermocouple connected to a standoff on the detector, left thermocouple floating (see attached images). Resistance on thermocouples checked for middle and right thermocouples ~ 4 Ohms per thermocouple. 

V-I tests performed prior to closing CARME. All detectors show expected curve, but light leaks are present. Pressing my hand against the aluminium shield yielded 0.5-1.5 uA drop in leakage current. Could not turn off lights for the test due to other people working in the cave. Will repeat test when closed. Temperature in the cave ~ 21.5 C. 

Both chamber sections have now been closed. Wire seal appeared correctly positioned immediately prior to final close. Bolts closing the wire seal have been tightend to 100 Nm, plan to increase to 140 Nm tomorrow. DN100 feed-through flanges have been tightend with a torque of 24 Nm. 

Plan is to move chamber back onto the ring tomorrow and get ready for leak testing. 

Hopefully we will not be opening the chamber for quite some time so find attached images of all four installed detectors and a video of them both moving into the beam axis for future reference

Strain reliefs on the flange side of the cable harness have been installed for two detectors (top right and bottom right detectors). 

We require the strain relief parts from edinburgh in order to install strain reliefs for the left two detectors. 

Find attached images for the strain relief installed and a video of the clamped cables during a movement cycle.

A V-I test was performed for the two detectors which have all strain reliefs installed (see attachment 4).  V-I curve appears similar to the previous test (elog 398). Aluminium foil shield is now a bit battered so may have some small light leaks. Detectors were moved using the motors while bias was applied at 150V. Small change in leakage current observed (~0.01-0.02 uA)

The detectors were moved into the beam axis using the motors to check the maximum distance they can be moved in without collision with one another. 

Movement of both pneumatic motors results in a separation of ~ 4 cm between the detectors.

The servo motors for left and right were each moved in by 1 cm -> results in separation of 2 cm between the detectors

The servo motors for left and right were then each moved in by 5 mm -> results in separation of 1 cm between the detectors

The separation between the jacking plate of one of the detectors and the side of the adjacent detectors is closer than the separation of the detector silicons. The detectors could not be moved in any further than this to avoid collisions from the jacking plate

Attached are photos after movement of the detectors. Parallax may affect the distance on the ruler in the photos. 

During beam time -> Maximum distance that can be moved on the servo motors is 30 mm combined for left and right. (15 mm left and right or 10 mm left, 20mm right etc)  

The new MACOR strain reliefs on the (detector side) have been installed. See attached photos

The two pieces  of MACOR are not fully closed but we are confident that the kapton wires are sufficiently clamped.

In order for the strain reliefs to be installed in the correct poisition, two nuts on the jacking plate of the cable harness had to be removed. This is as the groove in the strain relief was not deep enough to accomadate the nut. 

Attached is also a video of the wires (not) moving with the strain reliefs mounted

08.35 DSSSD#3 bias -149.95V leakage current -6.418uA temperature +19.6 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )

DSSSD#3 bias OFF

12.44 DSSSD#3 bias -149.95V leakage current -6.448uA temperature +19.7 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )

CRYRING cave lights ON - leakage current measurements @ 60s intervals

6.448
6.449
6.448
6.448
6.449
6.448
6.448
6.448
6.449
6.448

18.24 DSSSD#3 bias -149.95V leakage current -6.442uA temperature + 21.0 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )

CRYRING cave lights ON - leakage current measurements @ 60s intervals

6.441
6.441
6.441
6.441
6.441
6.442
6.442
6.442
6.440
6.441

12.34 DSSSD#3 bias -149.95V leakage current -6.763uA temperature +21.2 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )

CRYRING cave lights ON - leakage current measurements @ 60s intervals

6.763
6.764
6.764
6.765
6.767
6.767
6.767
6.767
6.768
6.769

12.48 CRYRING cave lights OFF

13.03 leakage current -6.771uA - no obvious change due to the CRYRING cave lighting

17.31 DSSSD#3 bias -149.95V leakage current -6.658uA temperature +21.0 deg C ( https://web-docs.gsi.de/~lestinsk/tempplot.php )

leakage current measurements @ 60s intervals

6.656
6.655
6.655
6.655
6.654
6.652
6.652
6.651
6.650
6.649

CRYRING cave temperature variations/cycles ~0.1 deg C at +21 deg C ambient temperature can produce leakage current variations ~60nA for a leakage current of ~6.6uA

td@winder:~/f77$ ./jgen
 *** Enter reference temperature (K)
294
 *** Enter minimum temperature, maximum temperature
 *** and temperature increment (K)
290 298 0.1

 Temperature (K)   Ratio (J(T)/J(294.0))

      290.0                0.702
      290.1                0.708
      290.2                0.714
      290.3                0.721
      290.4                0.727
      290.5                0.734
      290.6                0.740
      290.7                0.747
      290.8                0.754
      290.9                0.761
      291.0                0.767
      291.1                0.774
      291.2                0.781
      291.3                0.788
      291.4                0.795
      291.5                0.802
      291.6                0.809
      291.7                0.817
      291.8                0.824
      291.9                0.831
      292.0                0.839
      292.1                0.846
      292.2                0.854
      292.3                0.861
      292.4                0.869
      292.5                0.877
      292.6                0.884
      292.7                0.892
      292.8                0.900
      292.9                0.908
      293.0                0.916
      293.1                0.924
      293.2                0.932
      293.3                0.941
      293.4                0.949
      293.5                0.957
      293.6                0.966
      293.7                0.974
      293.8                0.983
      293.9                0.991
      294.0                1.000
      294.1                1.009
      294.2                1.018
      294.3                1.027
      294.4                1.036
      294.5                1.045
      294.6                1.054
      294.7                1.063
      294.8                1.072
      294.9                1.082
      295.0                1.091
      295.1                1.101
      295.2                1.110
      295.3                1.120
      295.4                1.130
      295.5                1.139
      295.6                1.149
      295.7                1.159
      295.8                1.169
      295.9                1.179
      296.0                1.190
      296.1                1.200
      296.2                1.210
      296.3                1.221
      296.4                1.231
      296.5                1.242
      296.6                1.253
      296.7                1.263
      296.8                1.274
      296.9                1.285
      297.0                1.296
      297.1                1.308
      297.2                1.319
      297.3                1.330
      297.4                1.342
      297.5                1.353
      297.6                1.365
      297.7                1.376
      297.8                1.388
      297.9                1.400

STOP *** Program ends

Since yesterday evening, the bottom right detector was at -150 V. In the morning, the current was quite stable ~ 6.77 uA. The bias was switched off, the foils opened, both of the detector arms were moved in and out three times, and the chamber was tightly covered again. A negative bias voltage was applied from 0 to 150 V in steps of 10 V one by one to all four detectors, and the V-I results can be seen in Attachments 1-4. All detectors seem to be fine. The variation of the current with time at a constant bias voltage of -150 V was checked for all detectors and the results are in Attachments 5-8. Also, with an applied bias voltage of -150 V to the bottom right and left detector, the detector arms were moved in and out three times which showed a variation of 1-2 nA and 1 nA in the leakage current. For further conditioning of the bottom right detector, it is again left with a negative bias voltage of 150 V over the weekend.

Today, the foil was opened, the pins on the bottom right detector were checked and looked fine, the right-hand arm was moved a bit in and then out, and the foil was tightly closed again. The negative bias voltage was applied from 0 to 50 V in steps of 10 V. During the measurement, the lights in the cave were switched off to ensure no leakage current from the light*. The results are shown in Attachment 1. To condition the detector, it was left at a negative bias voltage of 50 V for ~ 3 hours with lights on. No increase in current was seen (see Attachment 2), indicating the chamber was nicely covered with foil. Then the negative voltage was increased from 60 V to 150 V in steps of 10 V. No large current readings, like yesterday, were seen today (see Attachment 3). The detector was then left at -150 V for ~ 30 minutes with the current to be nearly stable with fluctuations in the range of 70-100 nA. The foil was then taken off to check if there are any dust particles on the detector surface. As can be seen in Attachment 6, some dust particle was found at the bias/multi-guard ring (MGR) boundary structures of the DSSSD. The area was then nicely cleaned with isopropanol + lab tissue wipe (see Attachment 7) and the chamber was covered with aluminum foil again. The negative bias voltage was applied from 0 to 150 V in steps of 10 V again and the results can be seen in attachment 5, indicating the response of the detector to be normal, unlike yesterday. Before calling the day off, the detector was left at -150 V overnight.

* Every time, before switching off the lights, it was checked that no one else was in the cave.

To test the detectors, adaptors were installed on the feed through flanges. A negative bias voltage was applied in steps of 10 V from 0 to 150 V. The V-I plots are attached for the four detectors. Three detectors - top right, top left, and bottom left (in the direction of the beam) - are fine. For the bottom right detector (in the direction of the beam), the current was fluctuating and was considerably high (1st test). The adaptors connecting to this detector were removed and checked by applying the bias voltage which showed zero current for voltages ranging from 0 to - 150 V, confirming the adaptors to be fine. They were then exchanged by other adaptors and the V-I test was repeated again (2nd test) with fluctuating and high current values. One of the flanges connecting to this detector was found to be light-tight. These tests were done at an ambient temperature of 21 degrees. Also, we couldn't find the rest of the three SHV to 2x Lemo 00 cables for the detector HV.

Completed mounting harnesses and detectors.

The strain relief support for the bottom most two detectors on the feedthrough side was not mounted because we could not find enough MACOR parts and mounting flanges. We cannot find them in GSI, possibly they are somewhere not obvious in Edinburgh.

The strain relief on the detectors' side are still being manufactured.

We plan to test the detectors electrically from next week without moving the dolly. DR and OG to find a temporary mounting point for the manifold so that FEEs can be cooled in current configuration.

Mounted four detectors on Carme ad well as four cable harnesses.

Cables for new, shorter harnesses appear still too long. Likely the model is not correct somehow.

One feedthrough flange was found to be damaged by an adaptor card. Tried to fix in vain. One pin is missing. Replaced with another.

(31 April)

Remounted 3335-12 on top and new 3335-1 on bottom of left hand plate. Used new dog legs and old standoffs.

Dismounted all harnesses and feedthroughs from CARME. Dismounted all blind flanges on right hand side. Also had to dismount bottom SAES feedthrough due to a bolt falling inside.

Remounted feedthough. Remounted left hand detector plate.

Prepared new 3335-11 and 3335-13 on top and bottom of right hand plate. Planning to mount tomorrow.

Also planning to start jacking in detectors to new harnesses.

Not possible to test any detector on the bench due to lack of appropriate multimeter probe. Will have to test with harnesses.

(29 April)

Inspected CARME after opening. See attached. Some key takeaways.

- No visible damage to the detectors or the Kapton cables. No visible deposits or dust on the detectors either. 

- No damage even to the fragile thermocouple wires

- The strain relief on the top and bottom did nothing. Those on the sides may have helped.

- The split funnels on top fell and fortunately missed the detectors. We should not keep them. Unclear if they feel when moving CARME or during the beamtime but either is too dangerous. We need another solution or we'll have to do without.

- Obvious traces of white dust particles over the chamber. Most likely MACOR.

Jacked out harness for bottom left detector that was not accepting bias. MACOR shavings fell off while jacking out. MACOR connector on side with no pins is clearly damaged. See attached. Should not affect performance.

Tested bias pins - they work. No visible damage to the detector except one bias bond wire has disconnected. Possibly one more nearby. TD thinks this is not enough to explain observed behaviour.

Mounting a DSSD on the plate while it hangs in Carme appears possible but very risky. Dismounted whole left support plate, and right support plate. 

Unless a clear fault can be identified for either the bottom left detector or its harnesses, both the detector and the harnesses will be replaced. Plan to remount top left detector with the same harnesses.

Plan to mount two more detectors on the right hand plate.

(28 April)

Mounted rails on dolly. The rails don't smoothly connect to those on the Aluminium frame and some thin metal shims were required to get the correct height. A metal support had to be placed above the Delrin pads to support the rails above the gap between frames.

All side feet were mounted but extensive modifications were required to slotted feet due to them not being manufactured to drawing, and to Carme middle section flange width being incorrect (see previous entry).

Removed brakes and started sliding CARME out. The dolly and the aluminium frame came partly separated as the weight of the side feet was shifted on the latter. Strapped them together. No damage.

Kept sliding. Sliding when the carriages passed from one rail to the other was quite hard. The back carriage on the left looking downstream lost a single ball bearing when crossing over. A more sophisticated solution is probably required.

Once Carme was on the dolly, opened it using M8 jacking bolts and lifted away front and middle section. 

No obvious damage inside but strain relief did not work as intended. Photos to be uploaded after more detailed inspection on Saturday.

Plan to install right hand side detectors over the weekend. Unclear if bottom left detector is damaged and needs to be replaced.

Removed turbo pump and set aside in a box. Considering switching to the other turbo to avoid degradation due to lack of use.

Installed bellows support and OG devised support to avoid bellows sagging when Carme is split open.

Attempted to install new CARME feet, but there were issues. Feet with slots produced do not match design drawings by PB. Slot is in the wrong side. Furthermore Carme interaction chamber flange thickness is 36 mm vs. 36.5 mm in drawing. DR can modify feet to make them fit tomorrow.

Now just waiting for rails to open CARME. Will arrive tomorrow or on Tuesday, after weekend and Mayday.

Disconnected cables from CARME motors and turbo. The turbo has to go to allow Carme to slide out. Crane may be required to lift because it's in a very hard spot to access.

Dolly mostly built. See attached. Left side doesn't quite fit right by 1-2 mm. Might be okay anyway but will put some shims to avoid any shaking during sliding.

Waiting for the rails to arrive due to GSI procurement issues.

Plan to mount new feet and bellow support tomorrow.

Also plan to split CARME at the smaller flange towards the interaction chamber, after the bellows and before the bellows towards the magnet on the downstream side.

CARME venting using nitrogen gas bottle. 

Coolant pipes dismounted from the chamber

Feed-through flange for n+n bias flange for bottom detector has a bent pin image attached. Clearer image of bent pin for ERNI connector used for aida03 also attached. All other feed-throughs and adaptor cards appear undamaged. 

CARME currently in vacuum, pressure ~3E-10 mbar. Chamber to be vented tomorrow afternoon by vacuum division. We have active both pirani and hot cathode gauge to aid. 

Equipment removed from the chamber in preparation for dismount of CARME from the ring this week. Equipment removed includes:

• Neg pump cabling
• Heating wire
• FEE electronic units and associated cabling (power, hdmi etc)
• Stainless steel FEE holders
• Red and blue cooling hoses

Attached image shows chamber following equipment removal. Adaptor cards still attached to feed-through flanges. ERNI connnectors examined, all fine except for FEE aida03 which has a bent pin (see attached image). Will dismount adaptor cards to examine further tomorrow. Feed-through flanges will also be examined to check for bent pins following adaptor card removal. 

New CARME frame is part constructed and is in the CRYRING area. Requires rails and castors which should arrive this week. The height of the frame will require shortening, to be level with the current frame. This will be looked into further tomorrow. 

Test of NIM WR source at Edinburgh

Attachment 1 - NIM WR source

NIM module upper SMA - DSO ch 1
NIM module lower SMA - DSO ch 2

Attachment 2

NO SYNC or CLK signals observed.

Noise observed with NIM bin power ON *and* OFF

Attachment 3

NIM WR source in EG&G Ortec NIM bin



... and with the Digilent Zybo board switched ON!


Attacments 4-7
Trigger ch 2
4, 40, 400 & 4000ns/div

Attachment 8
Trigger ch 1
4ns/div

When using the VITAR connected to the HDMI port of the root MACB the settings for all the MACB in the system 0x3.

This setting takes the Clock and Data line from the input HDMI and outputs it via teh HDMI output ports.

When using the Emulator connected via the SMA connectors on the back of the root MACB then the setting for the root MACB should be 0xD and all others should be 0x3.

Attached is the .jed file for programming the MACB and the .vhd source file to help with understanding of the settings.

We opened one up and soldered a co-ax cable to one of the +6v power contacts at the output of the filter board.

Connecting this to a 'scope we observed a level of +/- 5mv noise with no FEE connected.

Connecting one FEE made little difference.

Re-connected the FEE to the power supply in the cabinet and wired a co-ax to a spare FEE power plug. 

Ran the system with two FEEs on the bench top and two in the cabinet. The benchtop FEEs were connected to the NIM bin in the cabinet with copper braid.

Using a PB4 in the NIM bin and my test input cards on the FEE mezzanine connector, the following readings were taken using the 'integrate' function in the spectrum browser.

Shaping 8us, negative pulse.

aida02, ASIC1, ch0 Peak width => 16.58 channels ( full 16 bit spectra )

aida03, ASIC1, ch0 Peak width => 18.48 channels ( full 16 bit spectra )

aida04, ASIC1, ch0 Peak width => 18.05 channels ( full 16 bit spectra )

These could be better but the output of the PB4 was not perfect. I think ASIC 1 Ch0 is normally the worst on the mezzanine.

Attachments 1 to 6 are the waveforms and some zoomed in.

The co-ax from the power supply was connected to a 'scope and showed a noise level of +/-50mv. 

Fourier analysis of this noise showed two peaks 109kHz and 218kHz. ( Attachments 7 & 8 )

Photos of noise observed at each of the AIDA PSU outputs by digital oscillscope.

DAQ GOing with waveforms enabled.

Connection from AIDA PSU to scope by DMM test probes, twisted cabling, 3mm jack plug/BNC adaptor.

Attachment 1,2,3 =  +5V

Attatchment 4 = -6V

Attatchment 5 = +7V

Attatchment 6 shows test setup

Repeat above test with *all* cables from AIDA PSU to FEE64s disconnected, i.e. no AIDA PSU load.

Attachment 7,8,9 =  +5V

Attatchment 10 = -6V

Attatchment 11 = +7V

9:40

DSSD bias and leakage current values:

-99.99 V

-13.0960 uA

Pulsar peak widths (ch FWHM)

aida01 ~ 97

aida02 ~ 103

aida03 ~ 134

aida04 ~ 131

aida05 ~ 22

Pretty similar to what was found yesterday

15.30

Per Elog 375

Measured FEE64 voltages are as follows

@ISOL 4 AIDA PSU   @FEE64 aida05      nominal

(top-botttom)               (right-left)

+6.05V                        +5.26V                     +5V

+6.05V                        +5.26V                     +5V

+6.05V                        +5.26V                     +5V

-6.49V                         -6.26V                      -6V

+7.78V                        +7.46V                     +7V

Adjusted PowerStax PSU voltage pots of AIDA PSU ISOL 4

@ISOL 4 AIDA PSU   @FEE64 aida05      nominal

(top-botttom)               (right-left)

+5.79V                        +4.99V                     +5V

+5.79V                        +4.99V                     +5V

+5.79V                        +4.99V                     +5V

-6.23V                         -6.00V                      -6V

+7.32V                        +7.00V                     +7V

Attatchment 1-12 = BEFORE change

Attatchment 13+ = AFTER change

Pulsar peak widths (ch FWHM) AFTER CHANGE

aida01 ~ 100

aida02 ~ 96

aida03 ~ 130

aida04 ~ 130

aida05 ~ 22

16:20

DSSD bias and leakage current values:

-99.99 V

-13.2535 uA

Pulsar peak widths (ch FWHM)

aida01 ~ 100

aida02 ~ 103

aida03 ~ 128

aida04 ~ 133

aida05 ~ 22

Pretty similar to what was found in august https://elog.ph.ed.ac.uk/CARME/377

Photos of the new TTT14 DSSD delivered to GSI.
Photos of detectors are broken up by photos of SN on box
To big to put on elog. Have uploaded to /Disk/ds-sopa-group/np/GSI/CARME/TTT14_Photos.zip and will change permissions to 777

07.51 DAQ continues files 22Feb/R97

      ASIC settings 2022Jan31-11-52-00
       slow comparator 0x64

      EG&G Ortec 448 Pulser OFF

      All system wide checks OK

Attachment 1 - ADC data item stats

Attachment 2 - FEE64 temps OK

Attachments 3 & 4, 8 & 9 - per FEE64 1.8.W spectra 20us FSR and 200us FSR

Attachments 5 & 6 - per FEE64 1.8.L spectra

Attachment 7 - per FEE64 stat spectra

Leakage current remains 8.36 uA, 100V. 

Bias power OFF, SIP ion pump power back ON. NIM crate powered off. Motors pi and nnrpi1 still on for remote access. 
Compressed air off, water off. Fee relay power off and power cable disconnected. Motors box off. Safety pin for motors reinserted. 

Checked cable harnesses at cryring. 2 good short sections found and left with boxes in cryring. 2 damaged long sections (bad pin and broken ceramic) taken to repair in 
Edinburgh.

Waveforms and discriminator ON. Pulser re-connected to all fees via daisy chain. V=100v, I=8.36uA

Pulser peak widths (ch FWHM)

aida01 ~ 109

aida02 ~ 98

aida05 ~ 24

aida03 ~ 118

aida04 ~ 136

Attachments 2, 3 & 4 1.8.W spectra, 20us FSR

Attachment 5 FEE64 temps OK

Attachment 6 per FEE64 ADC data item rates OK

Attachment 7 per FEE64 rate spectra

Merger reset following procedure from https://elog.ph.ed.ac.uk/DESPEC/36. Keywords for future elog search NetVar, xfer links

Pulser walkthrough R94

EG&G Ortec 448 Pulser settings

Amplitudes 90,000 - 10,000 @ 10,000 step

Attenuators x5 IN

t_r 50ns tau_d 50us

polarity + (- polarity via Cooknell SA1)

Frequency int relay

Motors box turned ON, motors pi ON, dlink network connector ON. Motors box, pi and dlink all in 19 inch rack but power supply is from a uk mains extender daisy chained to vacuum mains extender.  19 inch rack power supply remains on clean line.

Pulser peak widths (ch FWHM)

aida01 ~ 105

aida02 ~ 98

aida05 ~ 23

aida03 ~ 132

aida04 ~ 144

See attachments 8 & 9

Detectors moved in by pnuematic only. Leakage current increased to 9.6 uA (same as leakage current during bias ramping)

Pulser Walk R95

Pulser settings as above

See attachments 10 & 11

Detectors moved back out . Motors box, pi and dlink still turned ON. Leakage current to 8.36 uA

Pulser Walk R96

Pulser settings as above

See attachments 1 & 12

Jumper removed from nn bias fee adaptor board (aida04). No jumpers on any adaptor boards now. V=100V, I=8.36uA

See attachments 14 & 15 - 1.8.W spectra 20us FSR

Pulser on 90,000 x5 attenuate

aida01 ~ 123, centroid ~14691

aida02 ~ 106, centroid ~ 15038

aida05 ~ 23, centroid ~ 14414

aida03 ~ 125, centroid ~ 50838

aida04 ~ 127, centroid ~ 51754

Jumper reinstalled on aida04 nn bias. Note only link 1, link2 inaccesible with fee inserted into ERNI. See attachment 13

aida01 ~ 123, centroid ~14688

aida02 ~ 114, centroid ~ 15034

aida05 ~ 23, centroid ~ 14411

aida03 ~ 118, centroid ~ 50854

aida04 ~ 135, centroid ~ 51697

Pulser off. Background run to be left overnight started 14:24 R97. V=100v, I=8.36 uA.

measurement 1 -string
intermediate (smaller) chamber - 2144 (mm) circumference,  measured half circumference 1072 mm 
outer (larger) chamber - 2160 (mm) circumference, measured 1/4 circumference 540mm

measurement 2 - foil tape
intermediate (smaller) chamber - 2156 (mm) circumference,  measured half circumference 1078 mm 
outer (larger) chamber - 2172 (mm) circumference, measured 1/4 circumference 543mm

Difference from centre to flat surface on outer chamber is 344 mm on drawing -> say 346 mm radius -> 2174 mm circumference
Part 620FBM600 from pfeiffer intermediate chamber 690mm diameter, 2168mm 

Measurements of parts of CARME frame to the target frame as a reference for target frame position.

Attachments 3+4 show clearance between CARME frame and target frame just below interaction chamber from inside and outside of the ring. Attachment 5 is clearance in same section but above interaction chamber

Attachment 6 - measurement between outer edge of CARME frame and inner edge of target frame - 165mm

Attachment 7 - measurements between outer edge of CARME frame and inner edge of target frame - 455 mm 

Attachment 8 - measurement between lower edge of CARME frame and lower edge of target frame - 1245 mm

Attachment 9 - measurement between top of VAT valve and lower edge of target frame - 233mm (left arrow), 216mm (right arrow)

10.07 DSSSD bias -100V leakage current -8.65uA

Waveforms and discriminators off, still on clean power supply

stats are ~10k across all fees

aida03 ~ 220
aida04 ~ 205
aida01 ~ 378
aida02 ~ 259
aida05 ~ 40

Grounding removed from all fees except nn bias fee aida04 and aida05. Grounding goes into both adaptor board and fee body

aida01 - no identifiable peak
aida02 - no identifiable peak
aida05 - double peak separated by 70 chn
aida04 - 400 shouldering
aida03 - no identifiable peak

Grounding removed from all fees except nn and pn bias fees aida04, aida01 and aida05. Grounding goes into both adaptor board and fee body

aida01 - 405
aida02 - no identifiable peak
aida05 - double peak
aida04 - 228
aida03 - 417

Grounding removed from all fees except pn bias fee aida01 and aida05. Grounding goes into both adaptor board and fee body

aida01 - 383
aida02 - no identifiable peak
aida05 - 64
aida04 - no identifiable peak
aida03 - no identifiable peak

Grounding on all fees. Grounding goes into adaptor board only

aida01 - no identifiable peak
aida02 - no identifiable peak
aida05 - 63  (wasn't changed)
aida04 - 700
aida03 - 700

Back to previous grounding on all fees

aida01 - 331
aida02 - 226
aida05 - 37
aida04 - 207
aida03 - 214

power cycle

aida01 - 326
aida02 - 238
aida05 - 46
aida04 - 212
aida03 - 195

Waveforms and discriminator back on

Removed test inputs and terminators from all fees, except aida03 (unable to reach) however the lemo is not touching the chamber
See attached waveforms compared to previous elog 32,33

Inserted test input to aida05 only directly from pulser. Width ~ 28

Inserted test input to aida01 only directly from pulser. Width ~ 329

Waveforms and discriminator off -> no impact on aida01 pulser width

Waveforms and discriminator back on

Connected a grounding cable from one of the water cooling pipes to cryring ground

aida01 ~ 205
aida05 ~ 23
aida02 ~ 105
aida03 ~ 71
aida04 ~ 148
Fees with bias attached to them aida01 (+ve) and aida04 (-ve) both show larger widths than there polarity counterpart
waveform screencap 34,35

Fee probe
7.46V left most bar
-6.26V 2nd bar
5.26V 3rd bar
5.26V 4th bar
5.25V 5th bar

Power supply probe
Top -6.05
2nd -6.05
3rd -6.05
4th +6.49
5th -7.78

new Ortec 448 pulser swapped in
aida04 ~ 166
aida05 ~ 21

Attachment 7-11 oscilloscope picture when probing fee relay power supply. Power ON fees connected. Top is attachment 7, bottom (5th) is attachment 11.  
Attachment 12-16 old pulser 
Attachment 17-18 new pulser
Attachment 19-23 oscilloscope picture when probing fee relay power supply. Power OFF fees connected. Top is attachment 19, bottom (5th) is attachment 23.
Attachment 24-28 oscilloscope picture when probing fee relay power supply. Power ON, fees disconnected. Top is attachment 24, bottom (5th) is attachment 28.
Attachment 29,30 probe-scope setup    

Moved pneumatic motor in and out several revolutions

Biased detector up to 100 V, I ~ 12.4 uA ambient temp c. 21 deg C

Moving detector in increased leakge current to ~14.5 uA, moving detector out dropped leakage current back to ~12.4 uA

aida05 - pulser width 21 chn (slightly lower than yesterday)

aida01 - pulser width 124 chn

aida02 - double peak (is not currently grounded)

aida03 - 183 chn

aida04 - 212 chn

Attachment 1     1.8.L spectra p+n FEE64s

Attachment 2      per FEE64 rate spectra

Attachment 3      aida05 1.8.L, 1.8.W and rate spectra

Attachment 4      FEE64 temperatures - OK

Attachment 5      per FEE64 ADC data event stats - rates for aida01-aida04 significabtly lower than yesterday presumably due to detector bias -100V

Attachments 6 & 7 per FEE64 1.8.W spectra

Attachment 8      1.8.L spectra for n+n FEE64s

regrounded aida02 back to cryring ground - required removing star configuration of all fee grounds and making a new

aida05 - pulser width 30 chn 

aida01 - pulser width 300 chn

aida02 - 220 -> double peak gone 

aida03- 190

aida04 - 200

Perhaps star configuration isn't as tight as before - re tighten star section

Re tightened section -> no impact on pulser widths

Moved detector in using pneumatic -> no impact on pulser widths

Added a grounding cable from the 19 inch rack to the same CRYRING ground that the fees are connected too. Stats around 2-3k, slow comparator = 0x64, bias=100v, I=12.18 uA

aida01  ~ 260

aida02 ~ 177

aida03 ~ 178

aida04 ~ 187

aida05 ~28

Removed CRYRING ground. Fees and rack connected together still. 

no change

Bias supply module is floating

ion pumps off, gauge off -> no change in waveforms, leakage current dropped to 8.7 uA

aida01 ~ 255

aida02 ~ 176

aida05 ~ 26

Removed all vacuum systems and motors power from 19 inch rack power. Connected to the rack are now: NIM bin, network switch, 2 inputs to mains relay, raspberrypi, pi dlink usb connector, VME crack

aida01 ~ 220

aida02 ~ 154

aida05 ~ 27

aida03 ~ 181

aida04 ~ 193

Moved power cable for 19 inch rack to CRYRING 'clean' power source

aida03 ~ 211

aida04 ~ 212

aida01 ~ 317

aida02 ~ 215

aida05 ~ 29

Reconnected CRYRING ground 

aida01 ~ 301

aida02 ~ 203

aida05 ~ 28

aida03 ~ 181

aida04 ~ 191

Current status 17:00:
All CARME vacuum equipment is off (turbo, SIP power modules, NEG power modules, gauges) - roughing pump is on but is valved off from the turbo which is valved off from chamber

Motors and motors pi are off. Detectors are fully out and the pin has been reinserted. 

Bias ON 100V, 8.5 uA. Pulser ON, all equipment connected to 19 inch rack power ON.  Jumper is on link 1 for nn bias adaptor card only. 

Initial discussions of proposals to provide open CARME chamber and provide access to near and far detector chambers

We assume that we need to complete all work installing and testing DSSSDs and re-assembling CARME by Feb 2022 in readiness for bakeout. 




Proposal #1

Disconnect far detector chamber section from mid-chamber section
Disconnect DN350CF flange from near detector chamber 

Crane to support near detector chamber and mid-chamber sections

Remove feet of near detector chamber and mid-chamber sections

Install cradle(s) beneath near detector chamber and mid-chamber sections

Use for fork lift to remove cradle(s) + near detector chamber and mid-chamber sections - ML confirms that an appropriate fork lift is available 


Proposal #2 (suggested by ML)

Design and fabricate table plus rails to extend transverse rails of CARME chamber support assembly
The CARME chamber support assembly comprises the 'feet' plus two-stage welded Al frame 

Disconnect far detector chamber section from downstream section
Disconnect DN350CF flange from near detector chamber 

Slide CARME chamber plus upper stage of Al support frame transversely onto table

Use crane to move CARME chamber to work area


Other discussions

Discussed workarounds to enable install of FEE64s (outside ring, upper feedthrough) which currently conflicts with longitudinal beam of gas jet target support frame.


To Do

Edinburgh

- investigate feasibility of proposal #2
- investigate how much space is required to install FEE64s (outside ring, upper feedthrough)
  e.g. by extension of transverse beams of gas jet target support frame, move current assembly outwards from ring c. 20-25cm


GSI

- investigate feasibility of gas jet target support frame changes outlined above e.g. movement of gas/water services, purchase of longer cross beams etc.


Suggest meeting (online) to discuss results of these investigations and continue discussions w/c August 22

09.45 Found CARME electrical power off

      Reset power switch of distribution box to on
      Reset fuse of 19" rack extender board

      One of the SIP power modules may be faulty - others switch on OK


14.00 Checked coolant water flow OK

      Transferred Netgear 24 port Gbit switch from AIDA (S4) to CARME (YR09)

      Re-connected FEE64 RJ45 network cables
      Re-connected nnrpi1 RJ45 network cable
      Re-connected RJ45 network cable (yellow) to bottom left connector of YR09 patch panel 
      
      @CRYRING user control rooms

      Connected RJ45 netwwork cable (yellow) from bottom left connector of patch panel (labelled "1-2->YR10" and "3-4->YR10") to CARME server carme-gsi p4p1 port


Retarted HttpdTcl servers on nnrpi1 and carme-gsi.

Normal 5x FEE64 power up

All system wide checks OK

FEE64 temperatures OK - attachment 1

ASIC settings 
 slow comparator 0x64

Pulser running through aida01-05
Detectors not biased -> lot of noise aida01-04

AIDA stats - attachments 3 & 4

aida05 pulser width ~150 channels FWHM, normal settings, shaping time 8us - attachment 4

See attachments 2-4

Tried changing ADC control register to 0xf in local controls tab -> stops waveform producing data -> no effect on pulser width (slight increase to 160 chn)
fast comparator blanked off (enable disable mask in discriminator control) -> no effect on pulser width
aida05 was ungrounded -> grounded aida05 to the same ground as aida01-04 -> pulser width reduced to 46 chns
Set ADC control register back to 0x0 -> waveforms back -> pulser width reduced to 24 chns
Changed shaping time from 8ms to 1ms -> pulser width increased to 67 chns -> changed back to 8ms shaping time -> returns to 24 chn width
Changed shaping time from 8ms to 2ms -> pulser width increased to 52 chns
Changed shaping time from 2ms to 4ms -> pulser width decreased to 33 chns

To log into appc218 desktop:
same login and password as to carme@atppc022.gsi.de

To start anydesk

1. make sure a monitor is plugged into the carme computer!
2. ssh into npg@carme-gsi
3. su terminal
4. killall anydesk
5. systemctl start anydesk
returns an anydesk backend, service and tray
Anydesk is now accesible 
 

14.00 CARME vacuum c. 1.8e-10 mbar - see attachment 1

open water inlet/outlet taps

NIM bin (MACBs, Ortec 480 Pulser, CAEN N1419ET) switched ON

USB-controlled ac mains relay switched ON - water & interlock LEDs active

Require VETAR2 (previous returned to Nik Kurz) and network switch (currently with AIDA@DESPEC)

Turbo pump ON - normal operation

Ion pumps ON - normal operation

16.30 ML informs us that ambient temperature of CRYRING cave has been increased from c. 16 deg C to c. 21 deg C and that this is likely the cause of the change in vacuum 
pressure in YR09 and the rest of the storage ring.

obtained VETAR2 and crate 

anydesk restarted