Meeting 2024 07 10
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!
Progress from this past week
- We have ran up the HV on L0, L1, L2, L3, L4, L5, L6, and L8. [1][2][3][4] The HV test indicates shorts in L3M3 foil G3, L1 XW foil G1, and L6(M0 and/or M1) foil G2. We held the other GEMs at the 3650V for 5-10 minutes for observation.
- There will be a power outage on Thursday morning[5], which will also affect the Hall A gas shed.
GEp preparations
- Our GEM task list is here: workplan
- Remove layers, isolate shorted sectors, repair APVs as needed
- Joe B will add LV inputs for new GEMs in the stack, we will need to make those cables (4 more layers)
- Install BB gas distribution from SBS line -- DSG will do this
- Further calibrations of SBS gas mix
- Install BB electronics crates and MPDs in new location
- Prepare and install pixel layers
- Repair/troubleshoot problematic CAEN crates -- DSG working on this
- MPD testing and repair (we should do this now in test lab, who can coordinate?)
DAQ updates (Ben, Bryan, Alex)
- Implement and test histogram method
