GlueX Start Counter Meeting, September 19, 2019

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GlueX Start Counter Meeting
Thursday, September 19, 2019
10:00 am EDT
Non-Standard Room: CEBAF Center, Room F228
BlueJeans: 556 286 544


  1. Announcements
  2. Review minutes from the last meeting
  3. Plot labeling
  4. Calibration and Efficiency
  5. Dark Rate Studies
  6. Run Planning
  7. Action Item Review


Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2019 on the JLab CUE. This directory is accessible from the web at .



  • JLab: Thomas Britton, Rupesh Dotel, Mark Ito (chair), Simon Taylor, Beni Zihlmann

There is a recording of this meeting on the BlueJeans site. Use your JLab credentials to authenticate.

Review minutes from the last meeting

We went over the minutes from the meeting on August 22. Rupesh is still on track for managing the dark current measurement during the upcoming run. Beni suggested that we contact Alexandre Deur and propose that we take the runs every two or three weeks, and once before the run starts.

Plot Labeling

Thomas demonstrated [the new plot labeling web page (use your JLab credentials)] that greatly speeds up the process and looks very nice as well. See the recording for the demo. Rupesh agreed to work with Thomas to label more start counter occupancy plots for the upcoming run. Thomas and David Lawrence plan to deploy the machine learning system to classify the plots and notify shift takers if anomalies are discovered.

GlueX NIM Paper

Mark has been volunteered to provide the start counter contribution. He plans to draw heavily on the Start Counter NIM paper.