Difference between revisions of "Meetings-2-25-2021"

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(Minutes)
(Minutes)
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#**[https://logbooks.jlab.org/entry/3865982 See the logbook entry] The misbehaving fadc in roc 25 slot 6 output some presumably older data when the other fadcs output data for event 1. The event 1 data for the misbehaving fadc appeared in the following block, in the other evio file. This can be verified by comparing the timestamps.
 
#**[https://logbooks.jlab.org/entry/3865982 See the logbook entry] The misbehaving fadc in roc 25 slot 6 output some presumably older data when the other fadcs output data for event 1. The event 1 data for the misbehaving fadc appeared in the following block, in the other evio file. This can be verified by comparing the timestamps.
 
#**Sergey said he would contact Cody about running some tests.     
 
#**Sergey said he would contact Cody about running some tests.     
# GEM-TRD:
+
# GEM-TRD
 
#** Comparison of the gas analysis with CDC and FDC shows different rates of reduction of Ar (once it was stopped). Also the Nitrogen contamination in the FDC is about a factor of 2 higher than in the CDC. Once the Ar level in the FDC is low enough will be able to measure Oxygen there.
 
#** Comparison of the gas analysis with CDC and FDC shows different rates of reduction of Ar (once it was stopped). Also the Nitrogen contamination in the FDC is about a factor of 2 higher than in the CDC. Once the Ar level in the FDC is low enough will be able to measure Oxygen there.
 
#** There were discussions with people from UVA for building a large-scale GEM-TRD prototype. As the prototype should reflect the full detector design, different configuration were discussed for such a GEM-TRD detector in GlueX. We try to minimize the material in the GlueX forward acceptance, the number of electronic channels, at the same time have enough coverage and good reliability. Many ideas were discussed.  
 
#** There were discussions with people from UVA for building a large-scale GEM-TRD prototype. As the prototype should reflect the full detector design, different configuration were discussed for such a GEM-TRD detector in GlueX. We try to minimize the material in the GlueX forward acceptance, the number of electronic channels, at the same time have enough coverage and good reliability. Many ideas were discussed.  
 
# Other
 
# Other

Revision as of 17:24, 25 February 2021

  1. Instructions for Bluejeans meeting connection
  2. Meeting ID: 290664653
  3. To join via a Web Browser, go to the page [1] https://bluejeans.com/290664653.

Thu 2/25/2021 2pm

Agenda

  1. Tracking
  2. Detector related reports
    • CDC
    • FDC
    1. status of alignment using Ks->pi+pi-
  3. GEM-TRD
  4. Other

Minutes

  1. Tracking
  2. Detector related reports
    • CDC
    • FDC
    • FA125
      • Naomi used the corrected readout code to look for eventnumber-itrigger mismatches and found many instances, from modules which are otherwise ok (in sync); presumably the firmware is not working perfectly for itrigger. Cody said he would look at it.
      • See the logbook entry The misbehaving fadc in roc 25 slot 6 output some presumably older data when the other fadcs output data for event 1. The event 1 data for the misbehaving fadc appeared in the following block, in the other evio file. This can be verified by comparing the timestamps.
      • Sergey said he would contact Cody about running some tests.
  3. GEM-TRD
      • Comparison of the gas analysis with CDC and FDC shows different rates of reduction of Ar (once it was stopped). Also the Nitrogen contamination in the FDC is about a factor of 2 higher than in the CDC. Once the Ar level in the FDC is low enough will be able to measure Oxygen there.
      • There were discussions with people from UVA for building a large-scale GEM-TRD prototype. As the prototype should reflect the full detector design, different configuration were discussed for such a GEM-TRD detector in GlueX. We try to minimize the material in the GlueX forward acceptance, the number of electronic channels, at the same time have enough coverage and good reliability. Many ideas were discussed.
  4. Other