GEM Meeting/20190222

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Logistic information

 BlueJeans calling instructions:
 Toll-Free Number (U.S.&  Canada):  888-240-2560
 International toll number:         408-740-7256
 Bluejeans CODE:                  998 903 0149
 Bluejeans link: https://bluejeans.com/9989030149

Minutes

• Tao: Presented charge distribution for different GEM hit (one, two, three etc) multiplicity. Presented simulated beam profile for one electron hit - as two-component gaussian. Correlation of number of electrons in quartz and GEM detectors are presented.
  • Seamus: I would expect single compoment gaussian - even with multiple scattering. Multiple electrons cannot be resolved because of 400 micometer pitch. GEM charge is not good metric.

• Chandan: Gas leakage problem is solved. Able to run TreeSearch. Try to understand the output file. Some weired pedestal problem in the SBU stand.
• Dustin: Ryan has the updated CAD. He will unify the CAD and see interferences. We should make a document and send to other people.
• Seamus: we should make documents and pictures available to people involved in installation. This will reduce many guess work.

Present

Seamus, Dustin, Joey, Chandan, Tao, Ryan, Devi