GlueX TOF Meeting, February 2, 2012

From GlueXWiki
Revision as of 15:00, 3 February 2012 by Marki (Talk | contribs) (→‎Minutes)

Jump to: navigation, search

Thursday, January 19, 2012
10:00 am EST
JLab: ARC, Room 428

Agenda

  1. Announcements
  2. Minutes from the last meeting
  3. Mechanical design: Tim, Chuck
  4. Prototype status: Paul, Sasha [1]
  5. Contract Status: Mark, Paul

Communication

Videoconference

  1. ESNet: 8542553
  2. EVO: EVO site

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2012-1Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2012-1Q/ .

Chairman's Cell Phone

(757)504-0664.

Minutes

Present:

  • FSU: Paul Eugenio, Sasha Ostrovidov
  • JLab: Chuck Hutton, Mark Ito (chair), Tim Whitlatch, Beni Zihlmann

Minutes from the last meeting

We reviewed the minutes from the January 19th meeting. Some items received continuing discussion in this meeting. See below.

Contract

Procurement at JLab and the Office of Sponsored Research at FSU are in touch and are exchanging information about the construction contract.

Mechanical Design

There have been a couple of conference calls with the design teams on the design of the light guides for the half-width (or split) paddles. We have agreement on a final design in hand.

Chuck showed the latest drawings, demonstrating the assembly steps we might follow on the floor of the Hall.

We talked a little about how the thickness of the scintillator wrapping material affects the design. Paul agreed to send us numbers on the thickness.

Paul showed a jig, produced by his machine shop, for gluing PMT's to the light guides. The light guide is housed in an aluminum frame and there is a clamp for holding the PMT while the glue dries.

Prototype Status

Sasha showed results from on-going tests of the eight-stage phototubes from Hamamatsu. eight stage tubes

TDC

FSU using f1 tdc, Caen tdc caen performs better, vx1290 any show stoppers see timing differences, with pulser and counters bring up with Dave Abbott and Fernando -> Mark put in a request to purchase TDC available for study here if needed

Action Items

Paul agreed to send us numbers on the thickness.

Retrieved from "https://halldweb1.jlab.org/wiki/index.php?title=GlueX_TOF_Meeting,_February_2,_2012&oldid=33949"