AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
EDI_PSA
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Entry time:
Sun May 19 06:09:38 2024
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> R1: > Same as previous configuration? > Negative signals. > No pulser > 2048 window / 1000 pre-gate trigger > 20 threshold / 44098 DC offset > 3-alpha source > > R2: > Detector rotated. > Negative signals > No pulser > 2048 window / 1000 pre-gate trigger > 20 threshold / 44098 DC offset > 3-alpha source > > > > > R3: > Detector rotated back. > Positive signals. > 2.5 Hz Pulser > 1024 window / 700? pre-gate trigger > 50 threshold / 48098 DC offset > 3-alpha source > > > R4: > Detector as before > Positive signals. > 2.5 Hz Pulser > 512 window / 600 pre-gate trigger > 50 threshold / 48098 DC offset > 3-alpha source > > R5: > Detector as before > Positive signals. > 2.5 Hz Pulser > 1024 window / 650 pre-gate trigger > 50 threshold / 48098 DC offset > 3-alpha source > > R6: > As above. No alpha source. > Data acquisition stopped very early into the run. Lost contact with digitiser? > > > Upon re-establishing contact, signal digitisation looks extremely coarse in y. > Previously observed behaviour. Reasons unclear. > Calibrate ADC on V1730PSD panel seems to have fixed this. > However, baseline/offset/threshold clearly changed based on data rate and signal. > Lowered threshold. > > R7: > Detector as before > Positive signals. > 2.5 Hz Pulser > 1024 window / 650 pre-gate trigger > 40 threshold / 48098 DC offset > No source. > Data acquisition stopped very early into the run. Lost contact with digitiser again? > > Did not reboot either PC or VME crate. Rebooted MIDAS only. Re-established contact. All looks good > > R8: > As R7 > Data acquisition stopped a few hours into the run. Same as before! > > Did not reboot either PC or VME crate. Rebooted MIDAS only. Re-established contact. All looks good > > R9: > As R7,R8 > DAQ stopped again. Rebooted. OK. Issue needs to be understood. > > R10 > As above > DAQ did *not* crash! > > R11 > As above. > > R12 > As above, 208Bi source placed in chamber. > No obvious signal. Run stopped > > R13 > Pulser settings changed during optimisation. > Source location changed during optimisation. > > --- > > Attempted to increase DC offset (->55098) and lower baseline (2400) to increase gain and make use of full > dynamic range. > Systems briefly triggers, contact with VME lost. Will need to reboot locally.
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