Run Planning Meeting Noters, November 2- November 9, 2022
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Hall D counting room white board
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Contents
Wednesday, November 9
Past 24 hours
- Taking production data on Full LHe target whenever we had beam. Since yesterday we collected 1.9 B events. The Total events collected for the Full target since we filled it on Saturday so far is 8.0B.
Shift Summary
Issues/Reports
- None
Plan
- Continue with Full target production.
- Mariana Khachatryan is taking ove RC later Today
Tuesday, November 8
Past 24 hours
- Don't forget to vote!!!
- Taking production data on Full LHe target whenever we had beam. Since yesterday we collected 1.9B events
- No beam this morning: vacuum valve problem
Shift Summary
Issues/Reports
- Fire alarm control. (Tim already explained it is not a real alarm). at 8:15 am there was a fire alarm in the Fire alarm control. It went away but came back after a couple of minutes. https://logbooks.jlab.org/entry/4078540
- Alcohol Bubblers Filled. Thanks Scot!
Plan
- Continue with Full target production.
Monday, November 7
Past 72 hours
- Friday. We took production data in empty target all day until Saturday morning. Smooth beam
- Saturday: ( in general the beam conditions have not been ideal)
- Total accumulated events for all this days doing empty target ~2.6B
- Day: ~10 am we started filling the target while Sasha
- Started running Empty target production whenever we had beam. (No beam for ~4.5 hours for a NL access)
Shift Summary
- Day Nov 4
- Swing Nov 4
- Owl Nov4/5
- Early riser Nov 5
- Day Nov 5
- Swing Nov 5
- Owl Nov5/6 (Luckiest Shift crew of the year!)
- Early riser Nov 6
- Day Nov 6
- Swing Nov 6
- Owl Nov6/7
- Early riser Nov 7
Issues/Reports
- Wednesday when doing the cosmic raw run the FP pulser rate was set to 2kHz and forgot to reset it back to 100Hz afterwards. So we were running with 2kHz the whole time since. Now set back to 100Hz (Beni). -> Sasha said it wasn't a big problem since it didn't change deadtime
- In general, beam conditions have been really poor. We continued taking data but made sure to mark some of the runs while ACC was troubleshooting problems with the injector.
- Shift Crew reported: Need to fill the alcohol bubblers.
Plan
- Continue with Full target production.
Friday, November 4
Past 24 hours
- Emptied the target at 9 am. No problems on that
- Started running Empty target production whenever we had beam. (No beam for ~4.5 hours for a NL access)
Shift Summary
Issues/Reports
- Alarm in one of the magnets (Beni)
- Cycling TAG5C (Daniel Moser)
- CDC EPICS showing diconnected (Arshak/Boris)
Hard reboot worked (Arshak)
Plan
- Continue with empty target production.
- (Note): Hall B plans to change to a 1/2 wave plate at some point Today.
- After empty production completed: calibration of CompCal modules with adjusted HV, 1 hr at low intensity (Sasha)
Thursday, November 3
Past 24 hours
- Maintenance day. Got Beam Back in the Swing shift.
- Harp scans after beam returned. [1] [2]
- Full target production all night whenever we had beam.
- Beam has been unstable. Related to issue to reduce HALO counts above 4nA for Hall B.
Shift Summary
Issues/Reports
- FCAL voltage issue and bases replacement (Malte)
- Simon was not authorized to add logbook entries when logged into the logbook on gluon02 (??)
Plan
- 9:30 am Empty target, then start production
- After empty production completed: calibration of CompCal modules with adjusted HV, 1 hr at low intensity (Sasha)
