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:	Fri Apr 4 17:13:26 2025
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> > JM plans to install new crimped, 3mm dia copper drain wires (a la AIDA@DESPEC) this afternoon. > > Initial Grounding - Lemo cables connecting adaptor cards ground in daisy chain. Fee bodies connected by 3mm copper drain wires in daisy chain. Two chains brought together > at final adaptor card which is connected to cryring ground. > > Attachments 1-5 > > ADC data item rates all <10k > ASIC settings all LEC slow comparators 0x64 > 1.8.L spectra aida05-08 widths 556, 511, ?, 570 ch FWHM respectively > 1.8.W spectra 20us FSR > Adaptor card grounding image > > 1.8L widths appear broader than previous day of ~300 width. Reason unknown, no change made to setup as yet. > > Second Grounding - 3mm copper drain wires connect each adaptor card to Fee body. Fee bodies daisy chained together using 3mm copper drain wire and connected to cryring > ground. > > ADC data item rates all <10k > ASIC settings all LEC slow comparators 0x64 > > Attachments 6-8 > 1.8.L spectra aida05-06 widths 620, 550 ch FWHM respectively, 1.1.L aida08 width 350 ch FWHM > 1.8.W spectra 20us FSR. Some extra high frequency noise > Adaptor card grounding > > > Third Grounding - 3mm copper drain wires connect adaptor cards in daisy chains. Fee bodies daisy chained together using 3mm copper drain wire. Two chains brought > together and connected to cryring ground. > > ADC data item rates all <10k > ASIC settings all LEC slow comparators 0x64 > 1.8.L spectra aida05-08 similar to initial grounding ~500 ch FWHM > > Attachments 9-11 > 1.8.W spectra 20us FSR. > AIDA5-8 channel rates. Rates dominated by noisy strips. Missing strips come and go as ASIC settings checked. > Adaptor card grounding > > Some work still required to reduce noise in the system and reduce pulser widths. Pulser should also be checked on scope > > Gauge turned back ON. Bias 80V, 3.5 uA before. Bias 80V, 5.4 uA after. Bias turned off and on again. NO change to diode characteristic, current ramps high before coming > down once bias on. Bias left ON 80V to see if stable when second gauge turned on and valves reopened. Pulser ON. Fee power OFF. Water cooling ON. > > No significant changes to waveforms, pulser width or rates with gauge ON. Other noise contributions probably outweigh effect of the gauge at this point. > > 3mm copper grounding cable and attachments, crimper and Yorkshire tea left in control room. Encoding: HTML ELCode plain Suppress Email notification

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