GlueX TOF Meeting, March 13, 2014

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GlueX Time-of-Flight Meeting
Thursday, March 13, 2014
10:00 am EDT
JLab: CEBAF Center, F326/7


  1. Announcements
  2. Review of meeting on February 13
  3. Installation Update
  4. Calibration
  5. Testing Results
  6. Software geometry change



  1. ESNet: 8542554 non-standard number

Desktop Sharing

  1. Go to
  2. In the "join a meeting" box enter the code: 1833622
  3. Fill in the participant registration form.


To connect by telephone:

  1. dial:
  2. enter access code followed by the # sign: 1833622#


Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2014-1Q on the JLab CUE. This directory is accessible from the web at .



  • FSU: Sasha Ostrovidov, Aristeidis Tsaris
  • JLab: Chuck Hutton, Mark Ito (chair)

Find a recording of this meeting here.

Installation Update

Two more mods were made to the install configuration.

  1. Holes in the clamping channels were made larger to accommodate slight repositioning of the connecting studs.
  2. We have reduced the number of studs used in the clamping; some of the outer studs will not be installed.

Chuck reported that as of last Friday the second layer of counters were laid out on the saw horses. Work on the support rails (attached to the forward support structure) is largely done; the rails are in place. There was a slight adjustment to the bearing attachment to the rails; a hole was slotted to accommodate the slightly wider TOF frame.

The next thing to do is to install the steel phototube shields on the frame.

Tim Whitlatch thinks that installation should be done by the end of the month.

Construction Documentation

Now that we are approaching the end of construction and installation, we need to think about having the Lab capture construction procedures and assembly databases as the final step of the contract. Chuck has all the procedures; he will check with Paul Eugenio that what he has is indeed complete and up-to-date. Sasha will send the SQLite database to Mark with the software to read it.

Software Geometry

Beni Zihlmann checked in changes to the HDDS specification and reconstruction code to account for the half-width counters. Simon Taylor helped also; he fixed a bug that was discovered with the half-length counters.