Difference between revisions of "GlueX TOF Meeting, February 2, 2012"
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* '''JLab''': Chuck Hutton, Mark Ito (chair), Tim Whitlatch, Beni Zihlmann | * '''JLab''': Chuck Hutton, Mark Ito (chair), Tim Whitlatch, Beni Zihlmann | ||
| − | + | ==Minutes from the last meeting== | |
| − | + | ||
| − | + | We reviewed the [[GlueX TOF Meeting, January 19, 2012#Minutes|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 [https://halldweb1.jlab.org/talks/2012-1Q/tof%20assy.pptx 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 [https://halldweb1.jlab.org/talks/2012-1Q/First%20results%20from%208-stage%20PMTs.html results] from on-going tests of the eight-stage phototubes from Hamamatsu. | ||
eight stage tubes | eight stage tubes | ||
| Line 57: | Line 65: | ||
put in a request to purchase TDC | put in a request to purchase TDC | ||
available for study here if needed | available for study here if needed | ||
| + | |||
| + | ==Action Items== | ||
| + | |||
| + | Paul agreed to send us numbers on the thickness. | ||
Revision as of 15:00, 3 February 2012
Thursday, January 19, 2012
10:00 am EST
JLab: ARC, Room 428
Contents
Agenda
- Announcements
- Minutes from the last meeting
- Mechanical design: Tim, Chuck
- Prototype status: Paul, Sasha [1]
- Contract Status: Mark, Paul
Communication
Videoconference
- ESNet: 8542553
- 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.
