Meeting 2019 04 11

GMn GEM commissioning Meetings: Thursday 9:00am - 10:00pm

Link to all previous meetings: GMn GEM Commissioning Meeting

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Kondo, ... 

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.