GlueX TOF Meeting, December 19, 2018

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GlueX Time-of-Flight Meeting
Wednesday, December 19, 2018
10:00 am EST
JLab: CEBAF Center, Room L210A
BlueJeans Meeting number is 350 531 998


  1. Announcements
  2. Review of minutes from the December 5 meeting
  3. Calibration Status
  4. Lucite Shield Geometry
  5. Upgrade Plan
  6. NIM Paper (Paul)
  7. Action Item Recap


Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2018 on the JLab CUE. This directory is accessible from the web at .



  • JLab: Thomas Britton, Ashley Ernst, Mark Ito (chair), Simon Taylor


The equipment loan from JLab to FSU, TJNAF #44283 has been approved for another year. It will expire January 10, 2020.

Review of minutes from the December 5 meeting

We went over the minutes from last time. See the sections below for the discussion.

Calibration Status

Since last time Ashley has calibrated the last handful of runs for Fall 2018. She also resolved the Beni-script-ambiguity issue mentioned last time. She urged Beni to commit the new "four file" version of the scripts to the GitHub repository.

Lucite Shield Geometry

After the last meeting Ashley consulted with Thomas on a simulation configuration. She will run with a single-particle gun event generator using geantinos. Beam background will be turned on and the simulation run with and without the Lucite shield. Rates will be compared. Thomas had to supply one small tweak to MCwrapper to control the beam current setting.

Upgrade Plan

We looked at Paul's presentation which came in too late to view at the last meeting. He presents an variation on Option 2 (no new electronic channels) and fleshes out Option 3 (8 more electronic channels). Both come with corresponding cost estimates.