AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
AIDA
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Entry time:
Fri Dec 8 11:32:44 2023
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Change n+n FEE64 aida04 d8:80:39:41:f6:b7 asic #1 faulty aida04 MAC from d8:80:39:41:f6:b7 to d8:80:39:41:ba:2b restart dhcpd ( systemctl restart dhcpd ) DSSSD bias -150V -5.17uA - attachment 1 FEE64 temperatures OK - attachment 2 All system wide checks OK ADC data item stats - attachment 3 High rates observed in all FEE64s *except* aida01 & aida04 => aida04 asics #1-4 OK CC/VP have commenced cabling bPlast - will await completion of install to review noise n+n 1.8.W spectra - 20 us FSR - attachments 5 per FEE64 rate spectra - attachment 4 18:20 AIDA noise status test bPlast - cabling complete, power on - all sides BB7 Mesystec preamps connected, power off, no detector HV DSSSD bias -150V -5.355uA - attachment 6 FEE64 temperatures OK - attachment 7 All system wide checks OK ADC data item stats - attachment 8 Rates c. 10-20k mostly dominated by a few 'hot' channels per FEE64 rate spectra - attachments 9 & 10 p+n 1.8.W spectra - 20us FSR - attachment 11 bPlast using 152Eu source for test - signal observed aida01 3.8.W may be recoil electron from Compton event n+n 1.8.W spectra - 20 us FSR - attachment 12 Some photos of bPlast & BB& preamp/cabling attached re-bPlast note that cables screened 3M 1245 + Kpaton + drain wire -> drain wires *not* connected to ground PSU ch 4 not ground referenced
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