Run Planning Meeting Notes, August 20-26, 2020
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Contents
MEDCON 5 restrictions (Bob May email)
- adhere to counting room capacity restrictions
- maintain 6 ft. separation (briefly passing another person inside 6 ft. while moving about the counting room is inevitable and is OK)
- wear masks anytime more than one person present in the counting room
- at MEDCON 5 the lab has no cafeteria services because eating "cafeteria style" (eating in common from prepared food) is inconsistent with COVID-19 controls. Staging food in the counting room to share is inconsistent with MEDCON 5 COVID-19 controls.
- food and drink consumption - because it requires removing face coverings to consume - should be limited to packaged food and drink brought for personal use that is consumed while maintaining at least 6 ft. from the nearest person and ideally, consumed in a separate room from others.
Tuesday, August 25
- Last 24 hours:
- Smooth production
- Report/issues:
- new AC calibration constants applied to epics variables, display
- Modifications to AC pedestal calculation
- active collimator calibration current scan, take 2
- Stability issues overnight on AC. [1], [2], [3] and [4]
- Beam energy monitoring
- Pending issues:
- TAGM missing channels due to preamp (Nick, Richard).
- Run Plan
- Production
Monday, August 24
- Last 3 days:
- Active collimator scan completed
- Low current cycle (beam position off)
- TAC run completed Saturday 15h00 to 22h00 setup and preliminary results restoration
- Production
- Report/issues:
- Beam position off during 150 nA running
- FCAL HV DB problems and correction
- Discussions about AC setup
- Update Particle rates reference plot?
- Beam energy averaging
- Rate monitoring, including 150 nA runs
- Test results of PWO crystals (batch 1)
- DIRC Tile Temperature alarm and hanging ROCDIRC Recovered after restarting DAQ
- DAQ issues: problems connection with ROCDIRC (twice) and disk full error.
- Pending issues:
- TAGM missing channels due to preamp (Nick, Richard).
- Run Plan
- Production
- No near-term machine studies or RF recovery is planned.
- Hall C change to 1 pass tentatively scheduled for 31 August.
Friday, August 21
- Announcements
- MEDCON 5 restrinctions
- Last 24 hours:
- Began low current cycle, busy with 0/90 PARA.
- active collimator current scaling scan but active collimator readout was down
- Vaccum leak in North Linac, down overnight. Expect update before lunch.
- Report/issues:
- Pending issues:
- TAGM preamp (Nick, Richard).
- Run Plan
- TAC run on Friday while Hall C is down for target change
Thursday, August 20
- Last 24 hours
- Good production (Total 242.7 B triggers)
- Started Low current cycle
- Report/issues:
- Data rate fluctuations: https://logbooks.jlab.org/entry/3831398
- Energy value dropped to 0 called MCC to fix. Something to watch for. https://logbooks.jlab.org/entry/3831173
- Problems with RootSpy and hydra. Fixed by restarting backend services from GUI. (Sergey)
- Pending issues:
- TAGH Disc counter not functioning properly (Sasha)
- TAGM preamp (Nick, Richard).
- Run Plan
- Continue low current running
- TAC run on Friday while Hall C is down for target change