Difference between revisions of "JEF meeting, October 21, 2022"

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* Simulations/Analysis
 
* Simulations/Analysis
−
 
+
*Preparation of parts for FCAL2 modules -- Sasha  
−
Preparation of parts for FCAL2 modules -- Sasha  
+
 
** Order 25 CRYTUR crystals (Total 1613 + 25 = 1638)
 
** Order 25 CRYTUR crystals (Total 1613 + 25 = 1638)
 
**[https://halldweb.jlab.org/detectors/fcal2/module_fabrication/wrapped/wrapped_crytur.pdf Wrapped CRYTUR crystals: 727 ]  
 
**[https://halldweb.jlab.org/detectors/fcal2/module_fabrication/wrapped/wrapped_crytur.pdf Wrapped CRYTUR crystals: 727 ]  
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* Module fabrication  -- Sasha
 
* Module fabrication  -- Sasha
 
** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/fcal_fabrication.pdf  Status of fabrication ]
 
** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/fcal_fabrication.pdf  Status of fabrication ]
−
** Fabricated modules: <span style="color:#FF0000"> Total 1298 </span> (7 modules fabricated since last week)  
+
** Fabricated modules: <span style="color:#FF0000"> Total 1303 </span> (5 modules fabricated since last week)  
 
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf All SICCAS 576 SICCAS]  
 
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf All SICCAS 576 SICCAS]  
−
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication_crytur.pdf 722 CRYTUR], available: 40
+
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication_crytur.pdf 727 CRYTUR], available: 35
 
* Updates from the FCAL installation meetings with Tim's group -- Sasha
 
* Updates from the FCAL installation meetings with Tim's group -- Sasha
−
** [https://halldweb.jlab.org/wiki/index.php/October_05,_2022_FCAL_Insert_Installation_Meeting October 5]
+
** [https://halldweb.jlab.org/wiki/index.php/October_19,_2022_FCAL_Insert_Installation_Meeting October 19]
 
** [https://halldweb.jlab.org/wiki/index.php/FCAL_2_Design_Meetings Link to the earlier design meetings]
 
** [https://halldweb.jlab.org/wiki/index.php/FCAL_2_Design_Meetings Link to the earlier design meetings]
  
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* Light Monitoring System -- Arshak
 
* Light Monitoring System -- Arshak
 
* DNP practice talk:  Philip Cole, Engaging Undergraduate Students in Constructing the PbWO4 Calorimeter for the JEF Experiment at JLab
 
* DNP practice talk:  Philip Cole, Engaging Undergraduate Students in Constructing the PbWO4 Calorimeter for the JEF Experiment at JLab
 +
 +
 +
=Minutes=
 +
Attendees:  Igal, Phil, Arshak, Sasha, Zisis, Liping, Axel, Jane, Bill, Jon, Sean, S.T.
 +
* Module fabrication room has a humidity issue
 +
** Soft iron starting to become rusty
 +
** De-humidifier has been installed:  60% humididy -> 20% humidity
 +
* New lab is available elsewhere in EEL building but want to minimize movement of crystals (also not humidity controlled!)
 +
* PR for 25 Crytur crystals has been signed -> would lead to 42 spares
 +
* Wrapping continues (35 crystals remaining)
 +
* All PMTs received
 +
* 1540 light guides have been glued to PMTs to date (not all wrapped yet)
 +
* PMT housing:  waiting for ~200 pieces
 +
* Received brass straps, need ~250
 +
* Fabricated modules: 1303, expect 65 crystals by the end of the year, can fabricate 100 more this year
 +
* Installation meetings every 2 weeks
 +
** Discussed lead glass unstacking + possible refurbishment
 +
*** Store on shelves sorted according to various potential problems
 +
*** Some PMTs may need to be replaced because the HV is currently at the maximum 1.8 kV
 +
*** Some dividers may need to be replaced due to high current draw
 +
** Will discuss location of racks + cabling
 +
** LMS design needs to be finalized (likely go with plexiglas)
 +
** Manpower from students?  Sasha working on task division
 +
*** Test set of crystals in dark box?
 +
* Phil gave a nice practice talk on student efforts for the DNP

Latest revision as of 08:08, 24 October 2022

Meeting time and location:

  • 9:30 am EST (JLab time) remote only
  • Zoom meeting ID: 161 050 9142 Passcode: 004965

Agenda


  • Light Monitoring System -- Arshak
  • DNP practice talk: Philip Cole, Engaging Undergraduate Students in Constructing the PbWO4 Calorimeter for the JEF Experiment at JLab


Minutes

Attendees: Igal, Phil, Arshak, Sasha, Zisis, Liping, Axel, Jane, Bill, Jon, Sean, S.T.

  • Module fabrication room has a humidity issue
    • Soft iron starting to become rusty
    • De-humidifier has been installed: 60% humididy -> 20% humidity
  • New lab is available elsewhere in EEL building but want to minimize movement of crystals (also not humidity controlled!)
  • PR for 25 Crytur crystals has been signed -> would lead to 42 spares
  • Wrapping continues (35 crystals remaining)
  • All PMTs received
  • 1540 light guides have been glued to PMTs to date (not all wrapped yet)
  • PMT housing: waiting for ~200 pieces
  • Received brass straps, need ~250
  • Fabricated modules: 1303, expect 65 crystals by the end of the year, can fabricate 100 more this year
  • Installation meetings every 2 weeks
    • Discussed lead glass unstacking + possible refurbishment
      • Store on shelves sorted according to various potential problems
      • Some PMTs may need to be replaced because the HV is currently at the maximum 1.8 kV
      • Some dividers may need to be replaced due to high current draw
    • Will discuss location of racks + cabling
    • LMS design needs to be finalized (likely go with plexiglas)
    • Manpower from students? Sasha working on task division
      • Test set of crystals in dark box?
  • Phil gave a nice practice talk on student efforts for the DNP
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