ELOG AIDA

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

AIDA

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Entry time:	Sat Mar 29 12:36:52 2025
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09.00 DAQ continues OK Current file May2017/R32_239 Detector biases; leakage currents OK - see attachments 1 & 2 FEE64 Temperatures OK - see attachment 3 good events; statistics OK - see attachment 4 Some error messages reported by merger yesterday but none overnight - see attachment 5 all system wide checks OK except ADC calibration of nnaida1, 21 and nnaida1 clock status (status =6) 09.33 E17/F11 ambient temperature +24.0 deg C, RH 38.0%, d.p. +8.8 deg C Julabo FL11006 set point +20 deg C, actual +20.0 deg C, water level OK (c. 75%) 09.35 Analysis of R32_259 - OK see attachment 6 10.50 Offline analysis R32_277 - ADC & disc data synchronised - see attachments 7-9 11.00 DAQ stop OK File May2017/R32_280 Check ASIC control x2 Zero all spectra 11.05 DAQ go File May2017/R33 BNC PB-4 Amplitude 90,000 x5 attenuator IN t_r 100ns tau_d 50us - polarity frequency 25Hz range delay MIN, tail pulse, INT ref ASIC settings 2017Mar27-16.12.39 except slow comparator 0x0a LEC/MEC fast comparator 0x20 15.00 Merger crashed (SEGV) - see https://elog.ph.ed.ac.uk/AIDA/607 DAQ stop Restart Merger DAQ stop OK following transient nnaida1 timeout Close merger/tapeserver browser, kill httpd for merger/tapeserver,merger and tapeserver terminal server sessions Disable histogramming and data transfer #1 DAQ reset, setup Restart merger and tapeserver Enable histogramming and data transfer #1 all system wide checks OK except nnaida1 & nnaida21 fail ADC calibration, nnaida1 clock status=6 15.18 DAQ start File May2017/R34 15.25 no merger error messages nnaida1 & nnaida2 good events high - ~100k and ~120k respectively - see attachment 10 16.24 removed R32 System wide checks - ASIC clock timestamp test fails on all nnaidas. Synchronised clocks. ASIC clock test passes. FEE temperatures, leakage currents - OK Merger reports Merge: Restarting from timestamp 1 or greater Merge: Starting at timestamp 27d1e55c00a0 Merge: Trying to add items to Q index 21 (Link 21) but queue already full Probably as a result of ADC clock synchronisation. 17:03 Used analyser on R34_23. No timewarps, negligible dead time. All other values as normal. 17.19 FEE64 temperatures, leakage currents - OK nnaida1 & nnaida 2 good events still high - ~100k roughly No further messages from merger 17.45 DAQ continues OK BRIKEN reports increased neutron and gamma activity. No apparent effect on AIDA rates. 18.50 DAQ continues OK FEE64 temperatures, leakage currents - OK No merger errors Used analyser on run R34_49 - no timewarps, rates as expected 19.30 BigRIPS optimisation ongoing. DAQ continues OK FEE64 temperatures, leakage currents - OK No merger error messages No panics from USB device monitor Used analyser on R34_58 - no timewarps, ADC data format ~ 1Mhz, other rates OK, highest dead time = ~2 s/254 s on nnaida 2 20.00 BigRIPS optimisation ongoing. DAQ continues OK FEE64 temperatures, leakage currents - OK No merger error messages No panics from USB device monitor Used analyser on R34_63 - no timewarps, ADC data format ~ 1Mhz, other rates OK, highest dead time = ~1.3 s/255 s on nnaida 2 20.15 BigRIPS reports beam optimisation may be over soon. DAQ continues OK. 20.47 BigRIPS optimisation ongoing. DAQ continues OK FEE64 temperatures, leakage currents - OK No merger error messages No panics from USB device monitor Used analyser on R34_76 - no timewarps, ADC data format ~ 1Mhz, other rates OK, highest dead time = ~1.1 s/255 s on nnaida 2 21.49 BigRIPS optimisation ongoing. DAQ continues OK FEE64 temperatures, leakage currents - OK No merger error messages No panics from USB device monitor Used analyser on R34_90 - no timewarps, ADC data format ~ 1Mhz, other rates OK, highest dead time = ~2.0 s/258 s on nnaida 2 23.05 BigRIPS optimisation ongoing. DAQ continues OK FEE64 temperatures, leakage currents - OK No merger error messages No panics from USB device monitor Used analyser on R34_109 - no timewarps, ADC data format ~ 1Mhz, other rates OK, highest dead time = ~1.9 s/256 s on nnaida 2 Encoding: HTML ELCode plain Suppress Email notification

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