ELOG CARME

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

CARME

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Entry time:	Sat Apr 5 01:28:14 2025
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Replace AIDA ASIC mezzanine of aida01 13.43 DSSSD bias & leakage current OK - attachment 1 ambient temperature 16.5 deg C FEE64 temperatures OK - attachment 2 All system wide checks OK WR timestamps OK - attachment 3 ADC data item stats OK - attachment 4 per FEE64 Rate spectra - attachment 5 c. 10 strips (of 1024) not producing data most missing strips are from aida05 - misaligned or damaged adaptor PCB? per p+n FEE64 1.8.L spectra - attachment 6 aida01 pulser peak width 75 ch FWHM common x/y scale => peak height proxy for peak width per n+n FEE64 1.8.L spectra - attachment 7 aida01 pulser peak width 70 ch FWHM per FEE64 1.8.W spectra - 20us FSR - attachments 8-11 Summary All FEE64s appear to be working (except aida05 which has c. 8 missing channels) with pulser - which validates the FEE64, ASICs and adaptor PCB. Electronic noise c. 50keV FWHM for aida01 & aida03 - other FEE64s better/worse. Preamplifier noise appears to be similar for all FEE64s which may suggest an issue with the test signal chain Note 1) e-target is starting up 2) have identified some instances of poor CARME cable management/routing see https://elog.ph.ed.ac.uk/CARME/545 EG&G Ortec 448 Pulser Amplitude 50,000 Normalise 5.00 x5 attenuator IN t_r 100ns tau_d 50us Polarity + Frequency relay line (50Hz) Cooknell SA1 Summing Amplifier inverted output to test - daisy chain Current ASIC settings saved to 2024Apr24-14.14.03 14.48 Pulser OFF All histograms & stats zero'd LEC slow comparator 0x64 -> 0xff HEC fast comparator 0x2 -> 0x5 background alpha run to validate signal path from DSSSD to FEE64 adaptor PCB 22.18 Start Merger & TapeServer - attachments 12-14 DSSSD bias & leakage current OK - attachment 21 ambient temperature 16.0 deg C FEE64 temperatures OK - attachment 15 WR timestamps OK - attachment 16 ADC data item stats OK - attachment 17 per FEE64 Rate spectra - attachment 18 per p+n FEE64 1.8.L spectra - attachments 19-20 Encoding: HTML ELCode plain Suppress Email notification

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