AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
AIDA
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Entry time:
Tue Mar 25 20:24:40 2025
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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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