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.