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 )