Meeting 2019 04 11
From Hall A Wiki
GMn GEM commissioning Meetings: Thursday 9:00am - 10:00pm
Link to all previous meetings: GMn GEM Commissioning Meeting
Update on UVa GEM commissioning (Kondo)
- HV test on N2 of the 4 modules of layer#2 done OK again see link: https://hallaweb.jlab.org/dvcslog/SBS/266 -HV test ongoing the 4 GEMs or layer#1 on the cosmic stand today - The plan is to move layer#2 on the cosmic stand soon => some work needed on the cosmic stand before moving the second layer - 34 UVa long cables for layer#2 + a set of MONO cables for one module delivered => two set of cables will be tested on PREX GEMs in the next two weeks - First iteration of the back planes support on the Alu frames 3D printed (see slides) => Need small modifications about dimensions => second iteration underway - Got long HV cables from Bogdan for the Clean room GEM layers - Need people to setup a standalone test bench of APVs on backplanes and for the test of the divider and PMT for these modules with the help from Bogdan - We started assembly of PREX GEMs (Siyu) => will keep us busy for the next 3 weeks => delay the UVa GEM layer assembly.