Difference between revisions of "GlueX PID Meeting, October 15, 2010"

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[http://evo.caltech.edu EVO]: [http://evo.caltech.edu/evoNext/koala.jnlp?meeting=2I292sMeM29I9l9tDI direct meeting link]<!-- This link is good through 2/18/2011 --><br>
 
[http://evo.caltech.edu EVO]: [http://evo.caltech.edu/evoNext/koala.jnlp?meeting=2I292sMeM29I9l9tDI direct meeting link]<!-- This link is good through 2/18/2011 --><br>
 
Conference Group: 800-377-8846, participant code: 77438230<br>
 
Conference Group: 800-377-8846, participant code: 77438230<br>
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'''Slides''': talks can be deposited in the directory <code>/group/halld/www/halldweb1/html/talks/2010-10</code> on the JLab CUE (you have to be a member of the "halld" group). This directory is accessible from the web at https://halldweb1.jlab.org/talks/2010-10/ .
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'''Slides''': talks can be deposited in the directory <code>/group/halld/www/halldweb/html/talks/2010-10</code> on the JLab CUE (you have to be a member of the "halld" group). This directory is accessible from the web at https://halldweb.jlab.org/talks/2010-10/ .
  
 
=Agenda=
 
=Agenda=
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=Minutes=
 
=Minutes=
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New Note 26
 
  
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tim, rory, beni, hovanes, elton, eugene, mark
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* '''FSU''': Sasha Ostrovidov
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sasha O.
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* '''JLab''': Eugene Chudakov, Hovanes Egiyan, Mark Ito, Rory Miskimen, Elton Smith, Tim Whitlatch, Beni Zihlmann
  
 +
==Review of last minutes from the last meeting==
  
−
all 8 pmts arrived seem to work
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We reviewed the meeting from the [[GlueX PID Meeting, October 1, 2010#Minutes|October 1st meeting]].
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splitters have arrived
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gain slightly less than first two 2.5-3.5 M
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target
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* All 8 PMT's from Hamamatsu have arrived at FSU and seem to work
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hydrogen only OK
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** The gain of these six slightly less than first two that were received: 2.5-3.5&times;10<sup>6</sup>
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helium an issue, look at it carefully
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* The splitters Fernando sent to FSU have arrived
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Chris start in fall
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review schedule and budget
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after primex run
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==Target==
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umass mou
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target part and electronics testing part, an undergraduate has been hired, hopefully though next academic year, will look for one more student, waiving the indirect costs
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Elton: move MOU through
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state of MA broke, cutting funding to higher ed
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trying to pull money out of grants
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undergradutes end up $15/hour
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elton explains the chain:
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department head, vice chancellor for research
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solid target in there as well
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graduate student indentified
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electronics: flash adc's probably both
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have students here in summer transfer effort to UMass
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when are we buying refrigerator?
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* '''Refrigerator'''. We discussed the status of the target refrigerator purchase. There is still a question of whether the refrigerator identified will be sufficient to support a helium target. Chris should be able to turn his attention to this soon, as was his plan. We need to review schedule and target in any case.
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Eugene: it is in the budget for this fiscal year
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* '''UMass-JLab MOU'''. Rory plans to be able to focus on this after the PrimEx run, which is in progress. The UMass responsibilities are in two parts: the target and electronics testing. One undergraduate has already been hired to help with testing, another one will be hired. The plan is to have the students spend time at JLab with Fernando Barbosa to learn the testing procedure and then transfer it to UMass.
  
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Sasha
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==Time-of-Flight==
  
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• money to equip production room, purchases to outfit lab have started
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Sasha gave a status report on progress at FSU:
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• having hard time with 3m buying ESR material, getting run-around, offer square sheets
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• working on missing tdc signals mystery
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• 40% have no good adc hit
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• even with good adc hit 25% with no TDC
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• new trigger system, two long paddles
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• 6 signals from three counters
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• switch from common start to synchronous mode
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• two trigger pmts
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• 70% good adc's, one of TDC hits missing
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• see overflow bits
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• synch reset every 4 microseconds
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• TDC, F1,
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• why not a circular buffer?
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• VME bridge
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Status of the MOU
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* There is some money to equip the TOF production lab; purchases to outfit lab have started.
 +
* Paul is having some difficulties with 3M buying ESR material in sheet; he continues to work on it.
 +
* Three-counter/six-tube testing configuration is up and running.
 +
** Some mysteries:
 +
*** High incidence of missing TDC and/or ADC's for good trigger.
 +
*** Overflow bits being set in syncronous mode more often than expected.
  
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Eugene: idea to look at tubes for some months
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===Status of the MOU===
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confirm problems reported by FSU
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might be issue with light collection, low signal, efficiency
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The FSU-JLab MOU is being reviewed by Allison Lung. The step after that is to pass it through the concurrence chain at the Lab.

Latest revision as of 11:36, 31 March 2015

Location, Time

Friday, October 15, 2010
2:00 pm EDT
JLab: CEBAF Center, Room F326/7
ESNet: 8542553
EVO: direct meeting link
Conference Group: 800-377-8846, participant code: 77438230
Slides: talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2010-10 on the JLab CUE (you have to be a member of the "halld" group). This directory is accessible from the web at https://halldweb.jlab.org/talks/2010-10/ .

Agenda

  1. Announcements
  2. Minutes from the last meeting
  3. Time-of-Flight
    1. Prototype Status
    2. Calibration system
    3. Mechanical interface to support structure: real estate planning
    4. MOU status
  4. Start Counter Status
    1. MOU plans
  5. Target
    1. Refrigerator update
    2. MOU status
  6. Action Items

Minutes

  • FSU: Sasha Ostrovidov
  • JLab: Eugene Chudakov, Hovanes Egiyan, Mark Ito, Rory Miskimen, Elton Smith, Tim Whitlatch, Beni Zihlmann

Review of last minutes from the last meeting

We reviewed the meeting from the October 1st meeting.

  • All 8 PMT's from Hamamatsu have arrived at FSU and seem to work
    • The gain of these six slightly less than first two that were received: 2.5-3.5×106
  • The splitters Fernando sent to FSU have arrived

Target

  • Refrigerator. We discussed the status of the target refrigerator purchase. There is still a question of whether the refrigerator identified will be sufficient to support a helium target. Chris should be able to turn his attention to this soon, as was his plan. We need to review schedule and target in any case.
  • UMass-JLab MOU. Rory plans to be able to focus on this after the PrimEx run, which is in progress. The UMass responsibilities are in two parts: the target and electronics testing. One undergraduate has already been hired to help with testing, another one will be hired. The plan is to have the students spend time at JLab with Fernando Barbosa to learn the testing procedure and then transfer it to UMass.

Time-of-Flight

Sasha gave a status report on progress at FSU:

  • There is some money to equip the TOF production lab; purchases to outfit lab have started.
  • Paul is having some difficulties with 3M buying ESR material in sheet; he continues to work on it.
  • Three-counter/six-tube testing configuration is up and running.
    • Some mysteries:
      • High incidence of missing TDC and/or ADC's for good trigger.
      • Overflow bits being set in syncronous mode more often than expected.

Status of the MOU

The FSU-JLab MOU is being reviewed by Allison Lung. The step after that is to pass it through the concurrence chain at the Lab.

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