Difference between revisions of "GlueX TOF Meeting, August 18, 2011"

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# Prototype Status
 
# Prototype Status
 
# Contract Status
 
# Contract Status
−
#* [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=1713 Schedule]
+
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1713 Schedule]
  
  
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==Slides==
 
==Slides==
  
−
Talks can be deposited in the directory <code>/group/halld/www/halldweb1/html/talks/2011-3Q</code> on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-3Q/ .
+
Talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2011-3Q</code> on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2011-3Q/ .
  
 
=Minutes=
 
=Minutes=
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* '''JLab''': Eugene Chudakov, Chuck Hutton, Mark Ito (chair), Simon Taylor, Beni Zihlmann
 
* '''JLab''': Eugene Chudakov, Chuck Hutton, Mark Ito (chair), Simon Taylor, Beni Zihlmann
  
 +
==Statement of Work==
  
−
schedule
+
Mark circulated a draft of the statement of work recently. Eugene had some questions:
−
budget
+
−
resolution
+
  
−
send copy to sasha of sow
+
* Is the resolution stated consistent with the proposal?
 +
* Is the schedule realistic?
  
−
talk to dan about scintillator specification
+
Mark received a copy of Elton's scintillator specification from CLAS. Eugene suggested getting a copy of the CLAS12 specification from Dan.
  
−
50% 132 ps
+
==PMT Purchase==
−
80% 126 ps
+
−
20% about same as 50 50
+
  
−
roatrate test had mechanical difficulties
+
Mark is collecting documentation on the phototubes we are considering for purchase. Details of the procurement process are being discussed.
  
−
drawings on tof page
+
==Items on the TOF Wiki Page==
  
−
last times minutes
+
Mark has added a few items to the [[Forward Time-of-Flight|wiki page]]:
  
−
sow
+
* Chuck Hutton's [[Media:Tof720.pptx|3D drawing of the TOF]] mechanical conceptual design
−
purchase
+
* Paul Eugenio's [[Media:IMG 1824.jpg|photograph]] of a recently made light guide
−
tube type
+
* a [[Time-of-Flight Cheat Sheet|TOF cheat sheet]], with nominal module counts and a sketch
 +
* another [[Media:H10534.pdf|schematic of the H10534]] phototube, this one without the dynode read-out
 +
 
 +
==Prototype Report==
 +
 
 +
Sasha has tried various splitters for one of the counters and measured mean-time resolution.
 +
 
 +
{|
 +
! TDC (%) !! ADC (%) !! resolution (ps)
 +
|-
 +
| 50 || 50 || 132
 +
|-
 +
| 80 || 20 || 126
 +
|-
 +
| 20 || 80 || about same as 50/50
 +
|}
 +
 
 +
A test with the trigger counter rotated so that 6-cm dimension is vertical is under-way.
 +
 
 +
==Action Items==
 +
 
 +
# Answer questions about SOW. -> Mark
 +
# Get scintillator specifications used for purchase by CLAS12 (Dan Carman). -> Mark
 +
# Get more splitters for FSU from Fernando. -> Mark

Latest revision as of 17:10, 24 February 2017

Location, Time

Thursday, August 18, 2011
10:00 am EDT
JLab: CEBAF Center, Room F326

Agenda

  1. Announcements
  2. Minutes from the last meeting
  3. Prototype Status
  4. Contract Status


Communication

Videoconference

  1. ESNet: 8542553
  2. EVO: EVO site

Telephone

  1. dial:
  2. enter access code followed by the # sign: 3421244#

Slides

Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2011-3Q on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2011-3Q/ .

Minutes

Present:

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

Statement of Work

Mark circulated a draft of the statement of work recently. Eugene had some questions:

  • Is the resolution stated consistent with the proposal?
  • Is the schedule realistic?

Mark received a copy of Elton's scintillator specification from CLAS. Eugene suggested getting a copy of the CLAS12 specification from Dan.

PMT Purchase

Mark is collecting documentation on the phototubes we are considering for purchase. Details of the procurement process are being discussed.

Items on the TOF Wiki Page

Mark has added a few items to the wiki page:

Prototype Report

Sasha has tried various splitters for one of the counters and measured mean-time resolution.

TDC (%) ADC (%) resolution (ps)
50 50 132
80 20 126
20 80 about same as 50/50

A test with the trigger counter rotated so that 6-cm dimension is vertical is under-way.

Action Items

  1. Answer questions about SOW. -> Mark
  2. Get scintillator specifications used for purchase by CLAS12 (Dan Carman). -> Mark
  3. Get more splitters for FSU from Fernando. -> Mark
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