Difference between revisions of "GlueX TOF Meeting, August 4, 2011"

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=Location, Time=
 
=Location, Time=
  
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NOTE: new standard room, date, and time!
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Thursday, August 4, 2011<br>
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Thursday, July  21, 2011<br>
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10:00 am EDT<br>
 
10:00 am EDT<br>
 
JLab: CEBAF Center, Room F326<br>
 
JLab: CEBAF Center, Room F326<br>
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# Announcements
 
# Announcements
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# [[GlueX TOF Meeting, July 7, 2011#Minutes|Minutes from the last meeting]]
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# [[GlueX TOF Meeting, July 21, 2011#Minutes|Minutes from the last meeting]]
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# Prototype Status [http://hadron.physics.fsu.edu/~ostrov/tof/20110721/]
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# Prototype Status [http://hadron.physics.fsu.edu/~ostrov/tof/20110804/]
 
# Contract Status
 
# Contract Status
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#* [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=1713 Schedule]
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#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=1713 Schedule]
  
  
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==Slides==
 
==Slides==
  
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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/ .
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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=
  
 
Present:
 
Present:
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* '''FSU''': Paul Eugenio, Sasha Ostrovidov
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* '''FSU''': Sasha Ostrovidov
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* '''JLab''': Eugene Chudakov, Chuck Hutton, Mark Ito (chair), Simon Taylor, Beni Zihlmann
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* '''JLab''': Mark Ito (chair), Chuck Hutton, Tim Whitlatch, Beni Zihlmann
  
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==Construction==
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==Review of minutes from the last meeting==
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* Ian Winger sent Chuck a 3-D drawing of the split light guides.
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* Paul will be busy with his DOE annual for the next week or so.
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* Three more light guides have been made from the UVT material.
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** These will be compared to non-UVT versions.
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* FSU Physics machine shop playing with procedure for fabrication.
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** They are getting good finishes with the new bit.
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* One light guide, was sent to Polymer Plastics for vapor polishing. It was due back this week.
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* Paul has talked to folks at Eljen about how they do polishing
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** Although vapor polishing will give good results, it is likely not better than hand polishing.
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** Paul purchased got some polishing compounds to try.
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** The Physics Department bought a new buffing station suitable for light guides.
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* No testing with the new light guides has been done yet.
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* Paul will send Chuck the dimenions of the steel tube.
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==Contract==
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We looked over the [[GlueX TOF Meeting, July 21, 2011#Minutes|minutes from the July 21]] meeting.
  
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Paul prepared a version of the statement of work, but the text was lost. Mark volunteered to write a draft.
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* The light guide sent to Polymer Plastics for vapor polishing came back. Sasha reported that Paul was not happy with the surface quality.
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* Chuck received the dimensions of the steel tube from Paul.
  
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==Time-Walk Correction Tests==
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==Prototype status==
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Sasha made some further tests to investigate the effect of trigger thresholds on his ADC spectra and to obtain time walk corrections. See [https://halldweb.jlab.org/talks/2011-3Q/ADC%20spectra%20and%20Time-walk%20corrections.html his web page] for details. He is able to extract corrections and improve the resolution in mean time only from 265 to 250 ps by applying them.
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Sasha could use some more splitters. Mark will ask Fernando about making some more.
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==Contract==
  
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Sasha tried out the technique that Elton described in a [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=1719 recent note]. See [https://halldweb1.jlab.org/talks/2011-3Q/Time-walk%20corrections.html his plots] for details. Cosmic data taken with prototype counters show some of the general features expected, but there is a non-Laudau distributed background in the sample that complicates the fits.
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Mark has started work on a draft of the statement of work. The text is written. It is missing some milestones. He will get those from Elton's schedule.

Latest revision as of 17:13, 24 February 2017

Location, Time

Thursday, August 4, 2011
10:00 am EDT
JLab: CEBAF Center, Room F326

Agenda

  1. Announcements
  2. Minutes from the last meeting
  3. Prototype Status [1]
  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: Mark Ito (chair), Chuck Hutton, Tim Whitlatch, Beni Zihlmann

Review of minutes from the last meeting

We looked over the minutes from the July 21 meeting.

  • The light guide sent to Polymer Plastics for vapor polishing came back. Sasha reported that Paul was not happy with the surface quality.
  • Chuck received the dimensions of the steel tube from Paul.

Prototype status

Sasha made some further tests to investigate the effect of trigger thresholds on his ADC spectra and to obtain time walk corrections. See his web page for details. He is able to extract corrections and improve the resolution in mean time only from 265 to 250 ps by applying them.

Sasha could use some more splitters. Mark will ask Fernando about making some more.

Contract

Mark has started work on a draft of the statement of work. The text is written. It is missing some milestones. He will get those from Elton's schedule.

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