08:07 CEST

Temperatures ok - attached

DSSDs on. Leakage currents still high. - attached

If ML & co cannot find the reason, will turn off FEEs later today

FEEs turned off, leakage current still high (DSSD off now). 

Motors out. 

---9 July---

11:00

Turned detectors on - all stable see attachment 1 

AIDA started - all okay. See attachment 2 for FEE temps.  

All FEEs set to LEC (0x0) and slow comparator threshold set to 300keV (0x1e). See attachment 3. 

After some issues tape server and merger all set up, NetVar not working??? have tried to reboot things but still getting issues. See attachment 4 for tape service and attachment 5 for merger. 

Currently writing to data to G22-205/R98 (R97 empty), doing background run.

13:30

All checks okay apart from white rabbit, see attachment 6.

Attachment 7 - stats 

18:30 CEST

More issues with anydesk - now refuses to connect with error message desk_rt_ipc

May be as simple as the monitor being turned off. Will have to be checked in person

Connected to atppc025 via x2go and from there checked

- Temperatures are fine (attached)

- Detector bias / leakage current is fine (attached)

- Data rate from file size being written is around 500 kB/s (fine)

- A number of interesting features in the online background spectrum. Likely all non-physical (attached)

- Stats OK (attached)

20:50 CEST

All checks good.

22:28 CEST

All checks good.

Features in the XY plot rensemble beam hitting the detectors. Attached.

Leakage currents and rates are good - unlikely to be major detector damage. Attached.

Only beam in the ring between now and end of D+D was stable uranium.

Killed CARMEsort via terminal (still no access to anydesk).

Restarted CARMEsort. No obvious structures appear after a few minutes. Was there beam in the ring today?

23:09 CEST

All checks good

Features in the XY plot and Ey plots disappeared.

---10 July---

03:22 CEST

All checks good.

Features gone. Attached.

05:15 CEST

All checks good.

07:34 CEST

All checks good.

10:40 CEST

All checks good. 

12:35 CEST

All checks good. Some features in plots again appeared in last 2 hours, attached Ey plot (attachment 15). 

14:40 CEST

All checks okay. 

16:40 CEST

All checks okay. 

18:40 CEST

All checks okay. Attachment 16 leakage current stable. 

Attachment 17 Ey plot.

19:35 CEST

All checks OK.

Reset the Root spectra again - highly unlikely to have beam overnight without experiments running.

23:39 CEST

All checks OK.

Still seeing peak at 6 MeV like attachment 17, after resetting the Root spectra. Detector damage? Still seems implausible.

Events are focussed as in attachment 12.

Reset again. No obvious peak or pattern after a few minutes running.

From Claude K

"CRYRING was running with the Uranium beam from ESR until Tuesday (8 July) night around 22:00.

From Wednesday noon we started to inject D+ from the local source and had the D+ beam stored at various energies from 14:30 until 17:40. During the night from Wednesday (9 July) to Thursday (10 July) there was no beam.

We then continued measurements with stored D+ On Thursday from ca. 11:00 to 21:00. Since then CRYRING is in shutdown."

---11 July---

08:07 CEST

All checks OK.

Peak at 6 MeV did not re-appear overnight. Attached x2.

12:00 CEST

All checks good! All plots look good!

16:00 CEST 

All checks okay! 

19:20 CEST

All checks OK.

Background peaks almost visible.

22:53 CEST

All checks OK.

---12 July---

07:25 CEST

All checks OK.

10:00 CEST

All checks OK. Temps attached.

11:00 CEST

All checks OK.

19:00 CEST

All checks OK.

23:00 CEST

All checks OK.

---13 July---

07:42 CEST

All checks OK.

11:00 CEST

All checks OK.

ELOG down during the afternoon

--14 July--

11:00 CEST

All checks ok. 

14:40 CEST

Tape service and merger now working on atppc025

All checks ok, briefly went no storage at around 14:38 CEST for 1-2 minutes whilst getting tape service and merger up. 

17:40 CEST

All checks ok. 

21:30 CEST
All checks OK.

23:16 CEST

All checks OK. Several screenshots attached.

Calibration appears to hinders clear alpha peaks.

---15 July---

07:47 CEST

All checks OK.

11:55 CEST

All checks ok. 

14:35 CEST

Issue with atppc025, see attachment 29 for error message (desktop 2, detectors etc)

Got error to go, all checks ok. 

17:35 CEST

Same issue with atppc025, otherwise all checks ok. 

20:30 CEST
All checks OK.

23:07 CEST

All checks OK

---16 July---

07:41  CEST

All checks OK

12:00 CEST

All check ok. 

15:15 CEST

Some fees have high rates, all other checks ok. 

15:32 CEST

The above behaviour appears to be correlated with an increase in leakage current across all four detectors. Most likely light?

The background is not reliable -> No storage.

Unfortunately the leakage current logger crashed a few days ago on the server, and without anydesk we did not realise. Restarted it on atppc025.

Informed ML about issue. If it cannot be solved we could increase the thresholds and keep going, but the background may not be representative.

16:35 CEST

Issue persists. ML and ZA are not aware of any changes, except power-saving mode enabled for cave AC. No effect on FEE temperatures - not the issue.

aida04 rates shows 0. Checkloaded. Fine for a few seconds. Back to 0. Data event rate 100,000 may be too high.

Increased thresholds to 1 MeV. Data rates lowered, but e.g. on aida04 still 40,000. Goes back to zero. Checkloaded. OK for a short while, then back to zero.

Tape server stopped. DAQ stopped - all FEEs respond, good! Merger still going.

DSSDs off. Will retry tomorrow morning.

23:44 CEST

Temps OK.

Updated anydesk to 6.3.2 CentOS7 release.

Works now.

15:20

DAQ stopped

Merger & Tape Server stopped

FEEs off

All detectors off

Leakage current plot attached

Leakage current file moved to /TapeData/

Will restart for a long background when the next experiment is over.

00.31 DAQ continues data file G22-205/R96_27
      
      DSSSD bias & leakage currents - attachments 7-8
      FEE64 temps OK - attachment 6
      ADC data item stats - attachment 5
      per FEE64 Rate spectra - attachment 4
      Merger & TapeServer - attachments 2-3

      Online analysis - attachment 1

      Analysis data file R96_29 - attachment 9
       no timewarps, all FEE64 deadtimes <<1%

04.04 FEE64 temps OK - attachment 10
      ADC data item stats - attachment 11
      DSSSD bias & leakage currents - attachments 12 & 15
      per FEE64 Rate spectra - attachment 13
      TapeServer - attachment 14

08.26 DAQ continues data file G22-205/R96_64

      DSSSD bias & leakage currents - attachments 16-17
      FEE64 temps OK - attachment 18
      ADC data item stats - attachment 19
      per FEE64 Rate spectra - attachment 20
      TapeServer - attachment 21

11:03 All checks OK
EyTotal histogram attached.

12:25 Temps OK. Rates OK.

15:03 run stopped - beam time over
all checks ok
EyTotal hist attached

20:00 - Go to YR cave to see what is going on

20:20 - Beam back

20:28 - Set Tape to Storage, rate ca 2500 kB/s
Temperature and rate OK, System wide checks OK

Target density low (4e12/cm2)

21:00 - target density still 4e12, Ey rate histograms attached (attach 4)

21:20 - Target density increased to 6e12, we see more indication of reactions

22:30 - All checks OK, tape rate still 2500 kB/s
Target density ~7e12/cm2, beam intensity ~1e9pps

23:00 - Target density 7.5e12/cm2, beam intensity: 1e9 pps. Particle detector rate: 8 kHz at injection
 Gas bottle pressure still above first tick 
 Target position X=-1000, Y=1400
 All running smoothly. CARME DAQ running OK. (Figs 5-7)

Run 94

Background with beam at 150 keV and no target.

Note energy is 0.15% off vs. beam and target to have a more realistic orbit.

As prior run but thresholds changed to

DSSD1 - 0xc

DSSD2 - 0x8

DSSD3 - 0x8

DSSD4 - MEC

Run 95

DSSD 4 worked briefly. Tripped again a few minutes into this run. Ignore

Run 96 - as run 94

run stopped at 14:00

Zoran reset to with-target settings for later

The plotted readout for the G35 voltage divider over several injections for this run is attached. This kind of data can be obtained from Konstantin also after the experiment.

The average is something like 88.4808 V.

Run 93- New run at 150keV, background with beam

13:15 All checks ok

Run 92- started at 09:00, background with beam

Same settings as run 91

See attachments for rates etc

All checks okay

09:58 Run stopped as now tuning 150keV beam

10:00 All checks ok

10:25 D2 bottle pack pressure 30 bar approximately

12:18 All checks ok

23:00 DAQ restored and data now being written okay. Checks all okay, see screenshots below. Histograms reset. 40 bars in bottle @ 23:45 - should last 30 hours.

12:00 Checks all ok. No problems with aidas or writing to disk.

01:10 Checks all ok.

02:05 Checks all ok. See attatchment 6 for peak update after reset histograms 3 hours prior. Target okay, dropped a little to 6e12 but seems to be going up itself. Will monitor and then move position if needed.

03:10 During checks, noticed detector 4 had tripped so turned it off. Writing to disk increased alot, statistics increased to alost 250000. Put aida13-16 in low/medium energy. Started new run. (see attatchment 7-14 for before and afters)

RUN 91

03:15 Checks all ok after turning off detector 4. Moved target around and got abit more density but x is very sensitive and y did not seem to do much. Density 5.5e12.

04:30 Checks all ok. Target decreasing in density - monitoring it.

04:35 Target density back up to 1e13 after moving in y.

05:30 Checks all ok. Target density decreased slightly to 8e12

06:30 Checks all ok, target density stable for past hour

07:30 Checks all ok

08:30 Checks all ok, target density at 1e13 for past two hours

09:00 Run stopped

Found all Merger Links background black - inactive. Nontheless the tapeservice was working, the data rate to disk was normal, and the file was being written and the histograms were being updated.

Decided to stop DAQ, stop Merger, restart merger. Links rest to green background - but no more writing to disk!

Killed Merger, killed Tape Service. Restarted.

Netvar read out at 3 - set to 1. When the Output of the Merger is enabled Netvar returns to 3. Tapeservice not writing to disk

Killed Merger, killed Tape Service. Restarted x3. Same behaviour.

Not working. No blocks being written.

With Tape Server status Stopped Ticked No storage, Unticked No storage -> Now writing blocks ?!

Tape Server Go. Writing to disk. Merger OK. Histograms updated, observables as normal (see next ELOG).

Lost runs 84-89 in the process.

12:15 restarted measurement with target - Run 83

same settings as for runs 76, 77 etc

ROOT histograms NOT zeroed

Beam at 8e8, target density at 1.5e13, scintillator @ 0 deg. peak rate 5000

status screenshots attached

15:15: Checks all ok, peaks are peaky (attatchment 8)

16:45 Checks all ok.

17:45 Checks all ok. IMP Froze and has been restarted. Peaks good. Light turned off iin cave.

18:40: Checks all ok. Target great at 1e13.

22:20 Checks done - all okay except aida green-to-red was not working, but still writing data to disk. Carlo trying to figure it out now. All other checks were okay. Daedalus crashed, restarted and target still at 1e13. 

Background without beam while source is optimised.

The current bottle of D2 was installed on friday 06.06. at around 12:00. I assume we started at 200 bar.

Right now we have 50 bar remaining in this bottle (16.06. at 8:00).

This is an average consumption of ~15 bar/day

 150 bar / 9.83 days

11:45 New run started - run 81, same settings as previous runs (75, 76 etc)

ROOT histograms NOT zeroed

Beam at 2.5e8, target density at 3e12

11:50 All checks okay

12:45 All checks okay

13:45 All checks okay

14:45 All checks okay

15:45 All checks okay.

17:00 All Checks okay. Target temp manually dropped from 30.4K to 30.1K to try and improve density as would not get much above 2.5-3ish. Also played with target position for a while - now seemed to have stabilised it at 4.5e12 as of now.

18:00 All checkd okay. Target been stable at 4.5-5.3e12.

18:20 Done checks again (all ok) as the beam is being a little stange. Attatched ss of peaky peaks (some of them very nice) but detector 3 histogram wont cooperate and wont let me see the counts if I zoom further down, but can see proton peak fine. Seeing periodic spikes in the counts plot for the particle detector - monitoring. Also the tail of the beam seems more red than usual.

19:00 More photos of strange spikes in the counts for particle detector uploaded. Sometimes, the baseline has decent sized spikes too. Attatchments 10-14

19:20 Checks ok. Traget stable. Spikes in particle detector seem to be more frequent, uploading more photos below. Also attatched peaks at this stage (attatchemtn 15).

19:36 Very strange spikes in particle det. Two bigish peaks at baseline and then strange beginning at the injection. Attatchment 19.

19:45 Another spike in the baseline for particle det. Attatchment 20. 

20:25 Checks ok. Spikes still in particle det plot.

21:20 Checks ok. Screenshot of peaks in attatchment 21.

22:20 Checks ok. Target been relativly stable all shift at 5e12. Spikes still periodically turning up in particle detector. Histograms are gaining counts, attatchment 22 is the peaks.

22:30 Target suddenly got really dense up to 1e13. Lifetime of the beam is ok. Trending down slowly. Did checks again and all is good.

01:45. Checks OK. Target seems thick.

04:30

Temperatures OK - attach

Rates OK - attach

Merger OK - attach

Hisograms look OK - attached

Target looks very thick from ring vacuum worsening.

7:15 all checks okay - historgams attached

beam 2e8, target 1e13, scintillator rate 2000 in peak

10:00 

Run stopped to gain cave access.

Before beam was stopped, target was moved out. We still see some signal on the neutral particle detector, roughly a factor 10 below with target on at 1e13 at/cm2

Will need a beam background run for normalisation procedure. See attachment 29

10:30

Now we have no beam in the ring we still observe some events in the neutrals detector. Some spikes up to 150 counts observed, could explain some of what we have seen so far. See attachment 30

Note we are saving all this data to MBS so it is effectively background for the neutral detector. 

08:00 New run started - run 80

Run whilst they are optimising the beam after losing it, everything else same as previous runs

ROOT histograms NOT zeroed

All checks fine

09:05 All checks okay

Attachment 5 current histograms zoomed into area of interest, detector 3 only proton peak visible

10:00 All checks okay

11:00 All checks okay

11:45 Run stopped as beam is back

New run started - Run 77 after refilling LN2 dewar

Same settings as Run 75 & 76

The root histos have not been reset, i.e. they show combined statistics of run 75, 76 and 77.

20:45 - all checks OK

22:00 - all checks OK

00:10

Observed no data writing to disk. Checked merger no data merging. No ADC data items. Seems daq crashed again.

Appears aida09 had crashed causing system to stop. Tried fix suggested in earlier elog by Tom. No success. All FEEs show error and system became unresponsive. 

Power cycling FEEs. 

00:30

New run started Run 78. Same conditions as previous runs. 

All thresholds remain unchanged ->0x28 (400 keV)

Had to reset monitoring histograms as they were unresponsive too. 

All system checks OK. 

Data rate is ~300 kB/sec

ADC data items rate is similar to previous run (screenshot already attached)

Detector leakage currents look OK. Plots attached. 

WS6 (elog and internet) appeared to freeze before. This could be similar to the issue osserved last weekend. All seems fine now and DAQ continues. Should keep an eye on it.

02:00

Checls OK

05:00

Checks OK

7:10 Checks OK. Target was fluctuating over night, dropped around midnight then back up but had no target for about 2-3 hours overnight. Fixed target thickness this morning and now have 5e12.

8:15 Checks Ok.

9:15 Checks Ok.

10:15 Checks ok. Target good at 5e12. Attatched screenshots of the peaky peaks so far (can't put numbers on excel as lost the ability to see it - see 9 10 and 11)

11:35 All checks ok. Screenshot of peaks attatchment 12 (decently peaky).

12:30 All checks ok. Peaks are beginning to show, especially proton and triton but on det 3, cant distinguish trition from noise peak so no value in spreadhseet for that. Target stable at 4.8e12.

13:30 All Checks ok.

14:30 All Checks ok.

15:40 All checks okay, lost beam at 15:25, let HKR know and they are looking into it, have put to no storage.

16:35 All checks okay, still no beam, taget is steady at 3e12

17:35 All checks okay, beam is back but being optimised

18:33 New run started- run 79, same settings as previous runs, did NOT reset histograms, beam now 2e8 (previously was 7e8)

18:33 All checks okay apart from temp of aida 3 which is a little high (see attachment 13), rates also attached (attachemnt 14), current histogram attached (15)

19:35 All checks okay, aida 3 temp now back within range, target density dropped but have managed to get it back up to 2e12

21:30 All checks okay, target has been very unstable, beam now at 3.8e8

22:30 All checks fine, target at 3e12 for past 45 minutes, beam at 4e8, current histogram attachment 16

23:40 All checks ok. Integral value for range to 4000 seems to be increasing for all histograms - meaning target is probably ok for now. Vacuum plot doesnt show any issues.

02:00 All checks ok. Integral values for proton peak have increased so assuming target is still holding as of now (only peak I can clearly isolate to get value from) - no indication that it is off via vacuum plot. 

5:00 All Checks ok. Integral values increasing. 

7:00 All checks ok, can't see target density as of 6:20

08:00 Run stopped as lost beam, histogram attachment 17

Same settings as run 75.

Detector 4 is biased at 100V and switched from MEC to LEC.

The root histos have not been reset, i.e. they show combined statistics of run 75 and 76.

90 keV/u beam on target, Target overlap confirmed with lifetime measurement using bunched beam - @ -12.5mm

We do not expect to see see Rutherford due to energy loss in the dead layer, using other particle detector for normalsiation.

Moved detectors in with servos only. Both arms are IN and stationary.

Left potentiometer = 36.54 mm

Right potentiometer = 37.96 mm

Horizontal beam position = -12.5 mm

Thresholds increased for all to 0x28 (400keV)

data rate is ~0.7 MB/sec

Electron cooler read values; Cooler voltage = 50V (dodgy accuracy need to ask about fc20 on monday), cooler current=0.26 mA.

15:50 All Checks ok. Overlap on beam found. Target at 4e12. Bottle at 90 bars.