Difference between revisions of "GlueX TOF Meeting, March 4, 2011"
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==Slides== | ==Slides== | ||
| − | Talks can be deposited in the directory <code>/group/halld/www/ | + | Talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2011-1Q</code> on the JLab CUE. This directory is accessible from the web at https://halldweb.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 [[GlueX TOF Meeting, February 18, 2011#Minutes|February 18th]] 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 [https://halldweb.jlab.org/talks/2011-1Q/tof_20110304/ 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. | ||
| + | |||
| + | ==Support/Installation Concept== | ||
| + | |||
| + | We looked at [[Media:TOF install concept.png|a slide]], from nearly two years ago, of the concept of supporting the TOF. This is still the "current" concept. | ||
| + | |||
| + | ==Contract Status== | ||
| + | |||
| + | Mark has started on an Advanced Procurement Plan (APP), a schedule for putting the construction contract into place. Elton's Fastrack schedule will provide input. | ||
Latest revision as of 22:03, 31 March 2015
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/halldweb/html/talks/2011-1Q on the JLab CUE. This directory is accessible from the web at https://halldweb.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 February 18th 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.
Support/Installation Concept
We looked at a slide, from nearly two years ago, of the concept of supporting the TOF. This is still the "current" concept.
Contract Status
Mark has started on an Advanced Procurement Plan (APP), a schedule for putting the construction contract into place. Elton's Fastrack schedule will provide input.
