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 11:35:33 2025
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09.40 DAQ continues OK File /TapeData/Oct17/R1_280 BNC PB-4 Pulser frequency switched from 250Hz to 25Hz range 09:54 ASIC Temperatures - Attachment 1 Bias and leakage currents ok - Attachments 2 & 3 Statistics - Attachment 4 10:19 Output of analysis of R1_291 - Attachment 5 11:02 Pulser widths measured before changing jumpers (In log book) DAQ stopped on Run R1_304 11:31 All field plane jumpers removed (Jumpers 1&3) System wide checks ok ASIC load check ok 11:37 DAQ started online only Statistics - Attachment 6 FEE temperatures - Attachment 7 11:46 Layout 1 - Attachments 8 & 9 Layout 2 - attachments 10 13:38 Layouts 3 - Attachment 11 Layout 4 - Attachment 12 Pulser widths measured using 1.8.L spectra. Most channels show an increase in noise with the FWHM increased by ~5-10 channels (Recorded in log book) 13:55 Layout 7 p-side waveforms - Attachments 13 & 14 Layout 8 n-side waveforms - Attachments 15 & 16 For comparison with jumpers on see yesterday's elog entry: https://elog.ph.ed.ac.uk/AIDA/674 14:02 DAQ stopped 14:23 PCB ground plane jumper removed from all adapter boards (Jumper 2) Bias and leakage currents ok T = 23.0 DP = +8.8 H = 38.7% - Attachment 17 System wide checks all ok ASIC load check ok DAQ Started 14:44 FEE temperatures all ok - Attachment 18 Statistics - Attachment 19 14:54 Layout 1 - Attachment 20 & 21 Layout 2 - Attachment 22 15:17 Layout 3 p-side pulser - Attachment 23 Layout 4 n-side pulser - Attachment 24 Pulser widths measured using 1.8.L spectra In comparison with just having the FP jumpers removed for channels that were not noisy before they show no to only minor increases in noise. However channels that were previously noisy with all jumpers on show drastic increases in the amount of noise. Increases in the FWHM of up to 80ch 13:55 Layout 7 p-side waveforms - Attachments 25 & 26 Layout 8 n-side waveforms - Attachments 27 & 28 DAQ Stopped 16:15 Detector bias turned off as replacing the jumpers is challenging 16:55 All jumpers back on. I advise starting with all on the new boards tomorrow and removing if needed. Pain to put back on when mounted with cables. 16:59 System wide checks ok Bias back on and leakage currents ok - Attachment 29 17:09 Statistics - Attachment 30 FEE temperatures - Attachment 31 By putting the jumpers back the statistics appear to have recovered to a similar level to this morning 17:25 FEEs powered down to do a power cycle for Patrick 17:50 FEEs powered up 18:00 Same javascript errors as yesterday when setting up DAQ System wide checks all ok FEE Temperatures ok 18:06 DAQ started Statistics similar to before power cycle - Attachment 32 Layout 1 looks good - Attachments 33 & 34 18:14 DAQ stopped 18:16 DAQ Started Writing to R2 in /TapeData/Oct17/ Writing at 11Mb/s 18:56 Statistics - Attachment 35 Encoding: HTML ELCode plain Suppress Email notification

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