GlueX TOF Meeting, August 18, 2011

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Location, Time

Thursday, August 18, 2011
10:00 am EDT
JLab: CEBAF Center, Room F326


  1. Announcements
  2. Minutes from the last meeting
  3. Prototype Status
  4. Contract Status



  1. ESNet: 8542553
  2. EVO: EVO site


  1. dial:
  2. enter access code followed by the # sign: 3421244#


Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2011-3Q on the JLab CUE. This directory is accessible from the web at .



  • FSU: Sasha Ostrovidov
  • JLab: Eugene Chudakov, Chuck Hutton, Mark Ito (chair), Simon Taylor, Beni Zihlmann

Statement of Work

Mark circulated a draft of the statement of work recently. Eugene had some questions:

  • Is the resolution stated consistent with the proposal?
  • Is the schedule realistic?

Mark received a copy of Elton's scintillator specification from CLAS. Eugene suggested getting a copy of the CLAS12 specification from Dan.

PMT Purchase

Mark is collecting documentation on the phototubes we are considering for purchase. Details of the procurement process are being discussed.

Items on the TOF Wiki Page

Mark has added a few items to the wiki page:

Prototype Report

Sasha has tried various splitters for one of the counters and measured mean-time resolution.

TDC (%) ADC (%) resolution (ps)
50 50 132
80 20 126
20 80 about same as 50/50

A test with the trigger counter rotated so that 6-cm dimension is vertical is under-way.

Action Items

  1. Answer questions about SOW. -> Mark
  2. Get scintillator specifications used for purchase by CLAS12 (Dan Carman). -> Mark
  3. Get more splitters for FSU from Fernando. -> Mark