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 11:24:32 2025
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> 07:50 Pulser settings - attachment 1 > > 07:52 System wide checks all ok > Statistics ok - attachment 2 > Bias ok - attachment 3 > > 09:30 The intensity of fragments is being increased > They are trying to do a factor of 10 increase first which should take us to around 100Hz > > 10:00 System wide checks all ok > Statistics - attachment 4 > Layout 1 showing implants - attachment 5 > Fee temperatures ok - attachment 6 > > 12.00 System wide checks all okay, no failures > Statistics (screenshot7) > Spectrum rate (screenshot8) > FEE temps were normal except AIDA04 had "no response" (screenshot9), reloaded several minutes later seems to read normal > (screenshot10) > Leakage currents okay, increase from previous values written to sheets (screenshot12) > > Rechecked FEETemps this time AIDA03 had "no response" (screenshot11), seems this occurs when the reload takes longer > than > usual, another reload shows all FEE temps as normal. > > Merger and tape server okay > > 14.00 System wide checks all okay, no failures > Statistics (screenshot13) > Spectrum rate (screenshot14) > FEE temps normal, no issue with reload this time (screenshot15) > Leakage currents okay still increasing, written to sheets (screenshot16) > Merger okay ~4.5M items/sec > Tape server ~4.5Mb/sec > > 14.50 Beam has been shifted to centre beam more onto AIDA (corresponds to run S452f011) > > 16.00 System wide checks all okay, no failures > Statistics (screenshot17) > > > Spectrum rate (screenshot18) > FEE temps normal except AIDA08 "no response" (screenshot19), reload returns to normal (screenshot20) > Leakage currents added to sheet (screenshot21) > Merger okay ~4.5M items/sec > Tape server ~4.5Mb/sec > > 17.17 no beam, preparing for the 190Ta setting > > 17:44 OH Takes over > System wide checks all ok > Statistics - attachment 22 > Temp ok - Attachment 23 > Bias and leakage currents ok - Attatchment 24 > > While MBS was not currently writing data the merger -> tapeserver link was briefly toggle > The Directory for the experiment was then setup S452 > The merger -> Tapeserver link was then re-enabled and data forwarding to MBS has continued. > > ASIC Check all ok > > > 18:10 Started writing data to file > File directory S452 > Run number R1_0 > Seems to have skipped a few files First full file R1_10 > Currently writing to /media/SecondDrive/TapeData > Current free space 4211084180 kB > Current write speed 46163 kB/s > Time remaining until full 91222 seconds > 25 hours remaining space > > 18:34 DESPEC starting new MBS file > AIDA Currently on file R1_41 > > 19:00 DESPEC Closing file > AIDA Currently on R1_75 > > 19:05 Comparing last years statistics to this years > > FEE Last year This year Factor increase > 1 60960 183111 3.00 > 2 183494 201256 1.09 > 3 91506 196647 2.15 > 4 73914 208290 2.81 > 5 31979 63571 1.99 > 6 54084 144638 2.67 > 7 35621 137605 3.86 > 8 38626 95858 2.48 > 9 264436 225790 0.85 > 10 209709 198896 0.94 > 11 88443 133899 1.51 > 12 183493 204996 1.12 > > Sum 1316265 1994557 1.51 > > 19:22 DESPEC opens a new file (They forgot to mention they were closing the previous file) > AIDA on R1_104 > > Looking int to high write rate to see if we can do anything to reduce it > It isn't the correlation scaler as that is coming in at a rate of 16kHz which amounts to around 1.5MB/s - attachment 24 > > 19:46 Much of the rate is coming from a small number of channels - attachment 25 > > 19:17 WR Timestamp error. > Mentioned to Nic and he said that sometimes small glitches like this are observed > Base Current Difference > aida01 fault 0x9e8b : 0x9e8d : 2 > aida02 fault 0x9a8f : 0x9a91 : 2 > aida03 fault 0x29e9 : 0x29eb : 2 > aida04 fault 0x7f66 : 0x7f68 : 2 > aida05 fault 0x1f4f : 0x1f51 : 2 > aida06 fault 0x8faa : 0x8fac : 2 > aida07 fault 0x53f0 : 0x53f2 : 2 > aida08 fault 0x7066 : 0x7068 : 2 > White Rabbit error counter test result: Passed 4, Failed 8 > > Understand the status reports as follows:- > Status bit 3 : White Rabbit decoder detected an error in the received data > Status bit 2 : Firmware registered WR error, no reload of Timestamp > Status bit 0 : White Rabbit decoder reports uncertain of Timestamp information from WR > > All other checks passed > > 20:52 DESPEC Stopping file > AIDA on R1_221 > > > 20:53 DESPEC Stopped file because UCESB crashed > AIDA on file R1_237 > > 21:20 All system wide checks ok > Statistics DISC info- Attachment 27 > FEE Temp ok - Attachment 28 > Bias and leakage current ok - Attachment 29 > Statistics good events - Attachment 30 > > 20:51 Started compressing data with command nice -n 10 gzip -v R1_* > Have discussed with Helena and Nic about the potential issues we could run into with the high data rate > I am not sure if MBS can keep up with this rate > We are still writing to file though. > > 23:00 Correlations have been lost with the FRS DAQ and the rest of the DESPEC analysis > 23:10 UCESB restarted and correlations have been regained. Verified with the implant-FRS time difference peak at 13us Encoding: HTML ELCode plain Suppress Email notification

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