Meeting 2022 06 22

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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Near term work plan

• See installation plan for SBS here: plan
  • [photos from the hall https://hallaweb.jlab.org/wiki/index.php/File:Installation_Update_22June2022.pdf]
• Installation of HV dividers on BB: work plan
  • BB APV Status
• Thoughts on special run requests during GEn:
  • Luminosity studies (Nilanga)
  • Full readout studies for negative pulse studies and etc (Sean)

Update on INFN GEM layers for GEn-RP

• Ran up a new divider on the front layer GEM of the inline stack. Verified temperature and V/I consistent with divider run-up with no GEM.
• Currently in Hall. Plan to install new dividers on upstream-most layer while we can easily access. Will need sliding platform to remove the layer to install the new dividers on the second layer.

Update on UVa GEM layers for GEn-RP

• Inline stack is in the Hall!

Update on BB GEMs

• Setting up the individual channel power supply for UV layer 0.
• Pedestal test on Thursday to look at noise level.

DAQ updates (Ben, Bryan, Alex)

• schematic of setup?
• FIR filter?
• Update on: need 2 DC working in Hall A