Meeting 2023 10 25

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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!

GEM inventory for GEn-RP and GEp:

  • Inventory and plan: [1]
  • HV upgrade tracker: [2]

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]

DAQ updates (Ben, Bryan, Alex)

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