Meeting 2024 05 15

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!

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GEn-RP, K_LL updates

• Moved up 1% on SBS gas mix [1]
• Evaluated gains and HV on new gas mix [2]
• Increased GEM HV on the front tracker and tweaked the G1 foil voltage on the back tracker [3][4]
• Access on Sunday morning to fix an APV in large acceptance region of rear tracker [5]
• Ended GEn-RP with 70% overall efficiency!
• Started K_LL running yesterday
• Last week we added separate channels for L4M0, L3M3 and L5M1. The only GEM not powered is L6M0.
• Need to develop test plan for Sunday's beam study day
• De-cabling SBS after Memorial Day
• SBS layers look good after mapping fix (all good then also for GEn-RP) [6]

Misc for GEn-RP/K_LL

• Experts on call: [7]