Alpha background gathered from 17:35 12/2/22 to 13:44 13/2/22 is run32. Run time ~20 hours. Some alphas visible in aida1 1*L histograms attached.
Noticed grounding of crimps that attched to cryring ground has come loose. Those crimps not ideal for our grounding cable so were loose. Grounding cable from each fee now meet at a single grounding cable joined by an m3 nut and bolt. This grounding cable then goes to the cryring ground and is properly secured. See attachment 1. No significant change to pulser widths with new grounding method from previous elog.
Aida5 appeared non-responsive, no good events / data items etc and would not stop when daq was stopped. Fee power cycled. Aida 3 and 5 then showed no data items / good events or any stats. When stopping daq all fees then became non responsive. Full restart initiated, fee power off, all servers incl merger and tape server closed. Restarted system, all fees now responsive, all show full stats and are writing data.
Alpha background started 17:06 13/2/22 to 09:41 14/2/22 is run35. Run time ~16 hours 40 mins.
Ex, Ey 1D histograms for run32 and run35 attached. Bin size 80 keV. |