AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
AIDA
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Entry time:
Sat Mar 29 11:18:13 2025
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> 10.15 DAQ continues OK > Current file May2017/R31_239 > > Detector biases; leakage currents OK - see attachments 1 & 2 > FEE64 Temperatures OK - see attachment 3 > good events; statistics OK - see attachment 4 > No warnings/errors reported by merger since DAQ GO - see attachment 5 > > *all* system wide checks OK *except* ADC calibration of nnaida1, 21 and nnaida1 clock status (status=6) > > 10.30 E17/F11 ambient temperature +23.8 deg C, RH 40.9%, d.p. +9.6 deg C > Julabo FL11006 set point +20 deg C, actual +20.0 deg C, water level OK (c. 95% - refilled) > > 10.35 Layouts 1, 3, 4, 7 and 8 - see attachments 6-13 > Note - as expected, zero HEC events, layouts 5 & 6 not shown > > 10.58 DAQ stop - transient timeout nnaida1 - followed by successful stop > File May2017/R31_248 > > Delete R31 > > 11.12 Disable data transfer > DAQ GO - transient timeout nnaida1 - followed by successful start > nnaida1 system console - see attachment 14 > > 12:00 Moved plastic veto scintillator downstream in an attempt to reduce noise > Rates in noisy FEEs reduced by 20-30% > > 14:30 DAQ continues OK > Found that pulser induces counts in some HEC (nnaida20, 14 in particular). See attachment 15. Pulser off > removes these events completely. > These events could be mistaken for implantation events during data acquisition. > Increasing the fast comparator threshold HEC from 2 -> 3 suppresses the events. Increasing the threshold > to 4 does not appear to have further effects. > Even with the increased threshold some HEC (e.g. 1.0H) still see the pulser. See attachment 16 (fast > comparator threshold HEC was 0x3). > Checked data is synchronised in file R32_33 > > 15:29 Set the threshold back to 2. We will perform this cut off-line in the analysis.
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