Time-of-Flight/Start-Counter Meeting, October 2, 2009

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Location, Time

Friday, October 2, 2009
4:00 pm EDT
JLab: CEBAF Center, Room F326/7
ESNet: 8542553
EVO: direct meeting link
Conference Group: 800-377-8846, participant code: 77438230
Slides: talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2009-10 on the JLab CUE (you have to be a member of the "halld" group). This directory is accessible from the web at https://halldweb.jlab.org/talks/2009-10/ .


  1. Minutes from the last meeting
  2. Time-of-Flight Status
  3. Start Counter Status
  4. Action Items


JLab: Mark Ito (chair), Elton Smith, Sascha Somov, Simon Taylor, Tim Whitlatch, Beni Zihlmann

Time-of-Flight Status

No report.

Start Counter Status

No report.

Start Counter, Target Geometry

We reviewed Chuck Hutton's drawings shown at an earlier meeting. Mark talked to Chuck and identified the various regions. See his notes for details.

The current target design is basically a copy of the Hall B design. The JLab target group did not contribute directly to the design. UMass has agreed to work on target issues. We discussed adding target discussion to this meeting so that we have a forum for discussion of issues, especially those having to do with mechanical support and the space budget. The addition of solid targets is an important wrinkle in all of this.

Werner has a new target geometry that he gave to Sascha. Sascha will incorporate the new geometry into HDDS.

New Action Items

  1. Put new start counter geometry into HDDS -> Sascha, Mark
  2. Broaden discussion of adding target design/construction to TOF/SC meeting -> Mark