ELOG EDI_PSA

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:	Mon Mar 31 12:08:03 2025
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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. Encoding: HTML ELCode plain Suppress Email notification

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ELOG V3.1.4-unknown