GlueX TOF Meeting, December 12, 2011

Monday, December 12, 2011
9:30 am EST
JLab: CEBAF Center, Room F326

Agenda

1. Announcements
2. Minutes from the last meeting
3. Mechanical design: Tim, Chuck
4. Prototype status: Paul, Sasha, Beni, Test Stand at FSU
   • Trip Report
   • Splitter or dynode for ADC?
   • Prototype studies [1]
5. Contract Status: Mark
   • Construction Manual
   • Quality Assurance Plan/Acceptance Procedures
   • Construction Manager
   • Construction Schedule

Communication

Videoconference

1. ESNet: 8542553
2. EVO: EVO site
   • direct meeting link
   • Phone Bridge ID: 443 0818

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-4Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-4Q/ .

Minutes

Present:

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

Trip Report: Work at FSU

Beni reported on work he, Sasha, and Paul did during Beni's recent trip to FSU (November 28 through December 2). He led us through his wiki page summarizing the work. He described:

• cosmic ray test stand at FSU
• PMT gain measurements
• revised PMT current estimates
• time difference resolution measurements

Most encouraging, he gets a Δt/2 resolution of 80 ps near the center of the TOF prototype.

We agreed that the trip was very useful and will help with communication in the future.

glueing:

 optical epoxy used now?
 grease
 RTV
 

Using grease on trigger

program to explore gluing Eugene will send info to Paul

10-stage tube uniformly an attractive option

email outline all information

chuck silicon cookies, changes support issues got copy of new light guide

paul vinyl cutter for vm2000 paul will work on getting bigger sheets or a roll