Difference between revisions of "GlueX TOF Meeting, March 4, 2011"
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*# Collinear counters with curved light guides to avoid interference between PMT's from neighboring counters. | *# Collinear counters with curved light guides to avoid interference between PMT's from neighboring counters. | ||
+ | ==Prototype Status== | ||
+ | |||
+ | Sasha showed several [??? plots of time differences from the prototype], both from the counter under test and trigger counters. Some of them exhibit strange multiple peaks. We will ship another TDC to FSU in parallel with continued efforts to understand what is going on. | ||
− | |||
beni agrees to ship a tdc to FSU | beni agrees to ship a tdc to FSU | ||
fishtail OK | fishtail OK |
Revision as of 20:35, 6 March 2011
Contents
Location, Time
Friday, March 4, 2011
2:00 pm EST
JLab: CEBAF Center, Room L207
Agenda
- Announcements
- Minutes from the last meeting
- Prototype Status [1]
- Support/Installation Concept
- Contract Status
Communication
Videoconference
- ESNet: 8542553
- EVO: EVO site
- direct meeting link
- Phone Bridge ID: 8 9450
Telephone
- dial:
- US and Canada: (866)740-1260 (toll free)
- International: (303)248-0285 (toll call) or look up toll-free number at http://www.readytalk.com/intl
- enter access code followed by the # sign: 3421244#
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-1Q
on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-1Q/ .
Minutes
Present:
- FSU: Sasha Ostrovidov
- JLab: Mark Ito (chair), Elton Smith, Simon Taylor, Tim Whitlatch, Beni Zihlmann
Review of minutes from the last meeting
We reviewed the minutes of the January ??? meeting.
- Sasha asked Beni what he did to get the 41 ps intrinsic resolution with the F1 TDC. Beni did his test putting two versions of the same signal into different channels of the TDC. Sasha will try this.
- Sasha is waiting for a 25 ps least count TDC from CAEN to arrive.
- Geometry. We had a rather meandering discussion of how best to arrange the TOF counters. Options on the table include:
- Widening the counters from 6 cm to 8 cm to allow PMT's to be in a collinear arrangement.
- Shifting alternate counters (in z) enough to allow straight light guides.
- Collinear counters with curved light guides to avoid interference between PMT's from neighboring counters.
Prototype Status
Sasha showed several [??? plots of time differences from the prototype], both from the counter under test and trigger counters. Some of them exhibit strange multiple peaks. We will ship another TDC to FSU in parallel with continued efforts to understand what is going on.
beni agrees to ship a tdc to FSU fishtail OK tow possivble schedules mdrive
construction
numbers for bending, machining, straight