Meeting 2024 07 24
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
Progress from this past week
- DSG beginning the movement of the BB gas flowmeters to the SBS line.
- Testing of BB layers HV
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?)
Suggested order of work
- Move layers into front and back tracker
- Fabricate remaining LV cables
- Upgrade the BB XY layer to SHV (test it)
- Move a BB MPD crate near the working layers new LHRS, cable up a layer for readout
- For cosmics, bring bars (HV+signal cables) to table and make a readout trigger. Work with techs to bring out 1 layer at a time?
- Option 2: Can we move stack to be near RHRS, we can access all gas lines, setup readout, LV etc. Setup scintillators around the stack and run for a longer period.
- Option 3: Or do we want to do this putting the stack on the platform? Harder to repair.
- Option 4: Stacks between LHRS and DAQ, re-run all the cables, MPDs, gas lines, etc. Possibly readout few layers at a time.
- Other work, setup gas flow in EEL to chamber. Finish HV upgrade & test.
DAQ updates (Ben, Bryan, Alex)
- Implement and test histogram method
