ELOG DESPEC

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

DESPEC

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Entry time:	Sat Mar 29 11:37:58 2025
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00:15 Shift change near AIDA R6_475 We continue with spill cycles around 0.2 Hz or one beginning once each ~5 seconds. All system-wide checks passed successfully Temperatures ok (aida01 still a bit hot) - see attachment #1 Stats as normal (SSD3 still noisy) - see attachment #2 Bias and pulser settings remain sane - see attachment #3 Writing data to disk at ~26 MB/s as yesterday - see attachment #4 Merging fine, 2.6 to 3.3 Mega items / sec (all aida## seen to go on) - see attachment #5 Rates look not unreasonable for expected implantation in short time window - see attachment #6 2:26 We are near R6_574 All system checks are fine Temps are fine - attachment #7 Stats look as before - attachment #8 Biases and leaks typical - attachment #9 Merger fine, 3 x 10^6 items / sec (skip screencap) TapeServer still sits near 25 MB/s (skip screencap) Cumulative implants look reasonable, but NB that histos have not been cleared - attachment #10 2:44 R6_587 or R6_588 The spills seem to have stopped based on the beeping scalars. Confirmed with other group there are no scint counts. See attachment of AIDA rates where no implants can be seen. See attachment #11 2:46 Spill beeps heard briefly, but they cut again. R6_590 2:49 Beam seems to be back R6_592 Scints have counts in DESPEC DAQ, scalars are beeping, AIDA sees implants. No problem. See attachment #12 for implants. 4:35 System checks all pass (except expected error on master clock) Temps okay - attachment #13 Biases and leak currents normal - attachment #14 Stats as before - attachment #15 Merger going, 3 mega items per sec TapeServer going, 25 MB/s 5:59 Beam is gone again, near R6_738. As before, we get consistent confirmation from the trigger clicks and the plastic scint data of DESPEC group. See attachment #16 which shows no implants in the rate. Contact phones for Control Room: 2222 We called, they are aware of a problem with the magnets and they are working to resolve it. So we will await them. Expert is scheduled for 7:30, but he may come earlier like 7:00 if he can make it in. We leave AIDA writing to disk since there are some longer lived daughters (hour or more) so we may still get some interesting decays with beam off 7:14 Beam is still off, but I make some notes System wide checks all okay Temps as normal (see attachment #17) Biases and leak currents okay (see attachment #18) Stats as normal (see attachment #19) Merger going at 3 mega cps TapeServer on, around 25 MB/sec Implants not seen in histogram rate as expected (see attachment #20) 7:32 We called the operators to confirm that they don't change anything before calling us first. Surely they said they don't touch the settings without telling us first, and just one magnet (maybe upstream of SIS) is down, and no plan to alter settings. 8.00 shift change at file R6_823 beam is back on, no settings changed. particles per spill is similar to before (2k~3k per spill) implants now being seen in rate histogram (attachment 21) 8.32 system wide checks all okay FEE temperatures are normal (attachment 22) leak currents are okay and have been recorded to sheet (attachment 23) good event stats seem normal, although noted that all FEEs in DSSD3 now over 100k (attachment 24) merger rate is running around 3M items/sec tape service rate is running around 26MB/sec 9.20 high energy spectra histograms for even FEEs was not displaying correctly (attachment 25). can also be seen on yesterdays elog on attachment 34 problem can be seen clearly in /tmp/LayOut6.mlf for the line corresponding to aida4 was 1.8h not 1.8H as the information was somehow saved in the layout (attachment 26). remaking each histogram and saving layout6 seems to be fixed (attachment 27) Top of the error message showed the problem, like: ==== Using /tmp/LayOut6.mlf restore server=aida02 spectrum=1.8.H to gallery=1 overlap=1 restore server=aida04 spectrum=1.8.h to gallery=2 overlap=1 SpecDetails returned with an error 0x30004 SOAP-ENV:Server-Error detected in method SpecDetails Invalid spectrum name invoked from within "SpecDetails 1.8.h" (in namespace inscope "::urn:SpectrumService" script line 1) invoked from within ==== 10.05 beam is being stopped to change some thresholds 10.34 system wide checks all okay FEE temperatures are normal (attachment 28) leak currents are okay and have been recorded to spreadsheet (attachment 29) good event stats are normal, as previously mentioned aida11 rate was over 100k this looks to have just been a fluctuation (attachment 30) merger is running at a rate of 3M items/sec tape service is running at a rate of 24MB/sec implants not seen in histogram rate as expected as beam still down (see attachment 30) 10.42 beam still down but taking data, currently file finishing R6_946 as of now we have 3.2Tb left which should correspond to around 26 hours left until space is full have zeroed all histograms so will take screenshots at 11.00 11.06 checked rates histograms, for aida3 some low energy channels in ASICs 1,2, and 3 were missing so performed ASIC control checks 11.25 beam back file S480/R6_975 12.00 analysis file S480/R6_1001 - attachment 33 FEE aida09 deadtime c. 5% (highest rate good events c. 250k), all other FEE64s << 1% all HEC data rate c. 1kHz all ADC data rate c. 1.2MHz 12.23 system wide checks all okay FEE temperatures are normal (attachment 34) leak currents are okay and have been recorded to spreadsheet (attachment 35) good event stats are okay (attachment 36) merger is running at a rate of 3M items/sec tape service is running at a rate of 26MB/sec 13.00 beam off, unknown reason at the moment, but can confirm from rates histogram (attachment 37) seems to be intermittent. file R6_1051 13.10 beam back on, no one was called. currently on file R6_1061 13.22 beam off as going to higher intensity beam. file R6_1069 14.42 system wide checks all okay FEE temperatures are normal (attachment 38) leak currents are okay and have been recorded to spreadsheet (attachment 39) good event stats are okay (attachment 40) merger is running at a rate of 3M items/sec tape service is running at a rate of 24M/sec 14.48 on file R6_1131 16.19 beam stop for 2 hours. TapeServer stopped and restarted - AIDA writing to No Storage file R6_1193 16:35 compression of files R6_[200-999] commenced (nice -20) 16:40 system wide checks all okay FEE temperatures are normal (attachment 41) leak currents are okay and have been recorded to spreadsheet (attachment 42) good event stats are okay (attachment 43) Encoding: HTML ELCode plain Suppress Email notification

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