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. 

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.

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

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 )

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

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

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.

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

Michael Lestinsky is currently working on the problem.

Run 48 started

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.

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.

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

Detector bias turned OFF.

Final leakage current plot - attachment 1

10.54 23.2.24 Bias OFF

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

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

03.45




10.01 




10.05 DSSSD bias OFF
      FEE64 power OFF

18.43 ASIC settings 2024Feb08-15.59.09

aida06 pulser peak width 66 ch FWHM

      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

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.