Background without beam while source is optimised.

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

11:06

Run during beam change. We will go down to 200 keV/u

All the checks are ok.

No storage mode

Target off

We played with some of the slow comparator thresholds to judge the statistics and data rate. 

Deemed threshold at 100 keV too low for the current beam energy due to excessive rates observed on all FEEs. If required for lower energies we can go to this level. 

Data rate at 130 keV threshold is about 2 MB/sec compared to 8 MB/sec at 100 keV. Note beam energy is 400 keV so no significant benefit going to the lowest threshold. 

NOTE: RunR55 is missing

Run56: Background run with 250 keV/u. Target off using the usual procedure.

All  checks ok!

We moved to nostorage mode and will change the run during the beam change

09:00

R4 alpha background continues, currently R4_12

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

21:00

Run 35 started.

D+ beam deuterium target. D+ beam energy is 2 MeV/u. (beam calc calculation is 1.9211 MeV/u -> may be wrong cooler voltage, need to check grafana)

Target density is about 4e12 at/cm2. FLuctuations between 1e12 and 1e13 at/cm2.

All four detectors positioned fully out and stationary.

Left potentiometer = 18.86 mm

Right potentiometer = 19.8 mm

Ring cycle time is 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.

Target T1=30K, T2=31.9K.

Nozzle position x=-3.06, z=1.72 mm

YR09-Etarget pressure = 2.29e-10 mbar.

Cooler set value = 1126V, 15 mA. Read value = 1068V, 13.22 mA

Detector 4 is still a bit unstable in its leakage current but the data coming through looks good. Some crap is periodically written to disk when leakage current spikes. Attachment 1,2 for leakage currents.

Attachment 3,4 data rate to disk and statistics tab for when detector 4 is behaving. When not data rate can spike to 4000 kb/sec. Looks OK at the moment.

Attachment 5 - xy plot. We observe a circular shape on the detector. We are unsure of what this is at the moment. Offline analysis required.

Attachment 6 - energy histogram including Rutherford.

Attachment 7 - energy histogram just nuclear peaks.

Attachment 8 - beam calc with read values. 

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)

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.

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

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

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.

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

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.

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

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.

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 

Run 20 running

We start a new run since the laser guys will do some measurements.

Zoran will increase the beam intensity

Detectors are out position

All checks are OK!

13:30

All checks are ok!

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