ELOG DESPEC

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

DESPEC

Fields marked with * are required
Entry time:	Sat Mar 29 11:38:16 2025
Author*:
Subject*:
00.15 Data link to MBS was closed by MBS - reason(s) unknown NH restarted MBS receiver and data transfer restarted 01.34 DSSSD bias & leakage current OK - attachment 1 FEE64 temperatures OK - attachment 2 ADC data item stats OK - attachment 3 Merger, TapeServer etc - attachment 4 04.36 DSSSD bias & leakage current OK - attachment 5 FEE64 temperatures OK - attachment 6 ADC data item stats OK - attachment 7 Merger, TapeServer etc - attachment 8 07.54 data storage to local disk enabled file aida-gsi:/TapeData/S100_alpha/R14_ 09.36 DAQ continues, current data file R14_46 168Er setting DSSSD bias & leakage current OK - attachments 9 & 10 leakage current DSSSD#1 ramping and cycling with beam spills FEE64 temperatures OK - attachment 11 System wide checks OK except WR/FPGA errors - attachments 12-13 WR timestamps - attachment 14 aida04 out of seq ADC data item stats - attachment 15 high rates observed all FEE64s beam on, beam off rates OK per FEE64 Rate spectra - attachment 16 per FEE64 1.8.L spectra - attachments 17-18 per FEE64 1.8.W spectra - attachments 19-20 per FEE^4 1.8.H spectra - attachments 21-22 Merger, TapeServer etc - attachments 23-25 data rates to c. 10Mb/s beam on 09.55 aida04 rebooted - https://elog.ph.ed.ac.uk/DESPEC/586 10.01 DAQ restarted data file R15 ADC data item stats - attachments 26-27 large variation in rates beam off/on c. 10.30 beam off (for new FRS setting?) 11.25 analysis of data files R14_19 (beam ON) and R15_24 (beam OFF) - attachments 28-29 For beam ON max deadtime c. 11% (aida04), beam OFF max deadtime c. 0.1% (aida04) Zero timewarps observed Notice large # of PAUSE/RESUME data items for aida03 & aida04 presumably due to additional overhead of processing the time machine scalers 12.35 Beam off DSSSD bias & leakage current OK - attachment 30 Can observe beam spill structure in DSSSD leakage currents - now slowly recovering with beam off FEE64 temperatures OK - attachment 31 ADC data item stats OK - attachment 32 Merger, TapeServer etc - attachment 33 12.55 New ASIC settings 2024Apr22-12.55.38 all discs disabled to reduce load on aida04 slow comparator 0x14 BNC PB-5 settings (since yesterday evening) Amplitude 10.0V Attenuation x10 tau_d 1ms Frequency 2Hz Tail pulse Polarity + 13.46 all histograms & stats zero'd 13.48 Beam off per FEE64 Rate spectra - attachment 34 2Hz pulser to p+n FEE64s per FEE64 1.8.W spectra - attachments 35-36 p+n FEE64 threshold = 6000 to capture pulser events n+n FEE64 threshold = 8000 to capture noise per p+n FEE64 1.8.L spectra - attachments 37-38 common x/y-scale - peak height proxy for peak width aida09 pulser peak width 57 ch FWHM ~40keV FWHM ( 5 x sigma ~ 85keV ) 14.28 168Eu setting (check only - setup still in progress) Encoding: HTML ELCode plain Suppress Email notification

Attachment 1:
Drop attachments here...

ELOG V3.1.4-unknown