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Entry time:
Sat Mar 29 11:29:34 2025
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> 21:10 After all of the works in S4 today the noise in the system was considerably worse > It was decided that before starting a new alpha run a powercycle would be performed. > The powercycle has had no effect on the rates. They are still terrible. > > The difference between yesterday and today is: > - Adaptor cards for FEE9 and 13 were re-aligned as they were previously misaligned > - bPlast has been plugged in and biased > > All system wide checks ok > Statistics threshold at 0xa - attachment 1 > Rate spectra (FEE5 does have events in all channels just noise is dominated by a few) - attachment 2 > Waveforms - attachments 3 and 4 > > Pulser turned off and threshold raised to 0x64 > Statistics - attachment 5 > > 21:19 Alpha run started to May21/R4* > > > 08:51 DAQ continues OK - file May21/R4_23 > > FEE64 temps OK - attachment 8 > ADC data items OK - attachment 9 > 1.8.W spectra - attachments 6 & 7 > no change cf. yesterday pm > Grafana - most recent 12h DSSSD bias & leakage current - attachment 10 > DSSSD biases & leakage currents - attachment 11 > Tape Server/Merger - attachment 12 > > 09:44 R4 stopped
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