Meeting 2023 10 25
From Hall A Wiki
GMn GEM commissioning Meetings: WEDNESDAY 10:30am - 11:30am
Link to all previous meetings: GMn GEM Commissioning Meeting
Please use sbs_gems mailing list for plots/communications and HALOG entries relevant to GEMs!
Contents
GEM inventory for GEn-RP and GEp:
Update on BB GEMs
- GEM experts on-call [3]
- BB HV was tripping a lot this weekend due to beam issues. We continued to raise the trip limits to reduce the trips of the detectors [4]
- BB GEM 5th layer, top most module (XY) likely shorted [5], [6], [7]
Update on layers for GEn-RP
- LV probably died in SBS and will be repaired on Wednesday when beam is away [8]
- HV problem in SBS layer 6 since turning on beam [9]
- Some problem in SBS layer 2 [10]
- Mass flow controller problem is still unresolved [11]
- Chandan, Lars, and Ellen temporarily solved the problem with Ar bottle changeover by setting it to happen at 300psi [12]
