---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. |