ELOG AIDA

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

AIDA

Fields marked with * are required
Entry time:	Sun Mar 30 09:18:10 2025
Author*:
Subject*:
09.40 Al snout electrically connected ( < 1 Ohm ) to Al gasket and Al base plate Al snout electrically isolated ( > 20 MOhm ) from aida02 FEE64 adaptor PCB and AIDA support frame FEE64 temperatures OK - attachment 1 DSSSD bias +100V leakage current +7.565uA - attachment 2 All system wide checks OK Slow comparator 0x64 per FEE64 rate spectra - attachment 3 per p+n FEE64 1.8.L spectra - attachments 4-5 aida01 pulser peak width 134 ch FWHM per FEE64 1.8.W spectra 200us FSR - attachments 6-7 ADC data item stats - attachment 8 Slow comparator 0x14 ADC data item stats - attachment 9 per FEE64 rate spectra - attachment 10 Ground Al base plate to aida02 FEE64 adaptor PCB - appears to be marginally worse than without ground per p+n FEE64 1.8.L spectra - attachments 11-12 aida01 pulser peak width 120 ch FWHM per FEE64 1.8.W spectra 200us FSR - attachments 13-14 per FEE64 rate spectra - attachment 15 ADC data item stats - attachment 16 11.48 DSSSD bias +100V leakage current +11.055uA Ground Al base plate to AIDA support frame - appears to be significantly worse than without ground per FEE64 1.8.W spectra 200us FSR - attachments 17-18 per p+n FEE64 1.8.L spectra - attachments 19-20 aida01 pulser peak width 150 ch FWHM per FEE64 rate spectra - attachment 21 ADC data item stats - attachment 22 11.48 DSSSD bias +130V leakage current +35.05uA Ground Al base plate to aida02 FEE64 adaptor PCB - additional bias makes no significant difference per FEE64 rate spectra - attachment 23 per p+n FEE64 1.8.L spectra - attachments 24-25 aida01 pulser peak width 118 ch FWHM per FEE64 1.8.W spectra 200us FSR - attachments 26-27 ADC data item stats - attachment 28 14.03 DSSSD bias +100V leakage current +10.7uA Ground Al base plate to aida02 FEE64 adaptor PCB - re-check per FEE64 1.8.W spectra 200us FSR - attachments 28-29 ADC data item stats - attachment 30 15.10 Add DSSSD HV cable from aida04 to aida02 - significantly worse Ground Al base plate to aida02 FEE64 adaptor PCB - re-check per FEE64 1.8.W spectra 200us FSR - attachments 31-32 ADC data item stats - attachment 33 15.37 Switch from - to + polarity detector HV N1419ET from ch #3 to ch #2, all outputs non-floating LK1 ( local HV ground )removed from aida12, aida03, aida11 - installed aida04 LK3 ( DSSSD PCB ground ) installed aida03 ( no change ) HV #1 core aida12, aida03, aida11 - braid aida04 test + chain aida9, aida01, aida10, aida12, aida03, aida11 - connected to BNC PB-5 pulser test - chain aida04, aida02 - not connected to pulser AIDA PSU cabling per https://elog.ph.ed.ac.uk/AIDA/879 HV cable aida04 to aida02 - removed Ground Al base plate to aida02 FEE64 adaptor PCB - removed FEE64 temperatures OK - attachment 35 DSSSD bias -100V leakage current -7.155uA - attachment 36 Slow comparator 0x14 per FEE64 rate spectra - attachment 37 per p+n FEE64 1.8.L spectra - attachments 38-39 aida01 pulser peak width 123 ch FWHM but note double peaking per FEE64 1.8.W spectra 200us FSR - attachments 40-41 ADC data item stats - attachment 42 Slow comparator 0x64 ADC data item stats - attachment 43 Very similar performance to + polarity DSSSD HV tests 16.05 Add LK1 to aida02 DSSSD bias -100V leakage current -7.770uA Slow comparator 0x14 per FEE64 1.8.W spectra 200us FSR - attachments 44-46 ADC data item stats - attachment 47 per FEE64 rate spectra - attachment 48 Improved noise for n+n FEE64s esp. aida04 Encoding: HTML ELCode plain Suppress Email notification

Attachment 1:
Drop attachments here...

ELOG V3.1.4-unknown