Difference between revisions of "JEF meeting, April 1, 2022"

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* Preparation for mass production of FCAL2 modules -- Sasha
 
* Preparation for mass production of FCAL2 modules -- Sasha
* 50 new CRYTUR crystals received
+
** 50 new CRYTUR crystals [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/4_1_22/crytur_received.jpg received]
 +
*** Need to perform a quality check
 +
** DSG group:  preshaping (18 foils a day), wrapping (7 crystals a day on average, expect to wrap 10 crystals per day in the future).
 +
** Contract with the GWU is under preparation (SOW, sole source,...)
 +
** Chris A. continues to braze strips; discussions regarding brazing quality. Bobby preparing soft Iron housings.
 +
** Igal continues cutting ESR / Tedlar
 
* Module fabrication  -- Sasha
 
* Module fabrication  -- Sasha
**[https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf  Modules fabricated by Arshak and Sasha] [https://docs.google.com/document/d/1upI9M_RNR4qipzwg-SmxmzkqoCDU294x7Y3jT5M6DVY/edit (list on Google Drive)] (grand total 209)
+
**[https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf  Modules fabricated by Arshak and Sasha] [https://docs.google.com/document/d/1upI9M_RNR4qipzwg-SmxmzkqoCDU294x7Y3jT5M6DVY/edit (list on Google Drive)] (grand total 245)
 
** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/4_1_22/modules_in_tedf_4_1_22.jpg  Fabricated modules in TEDF ]
 
** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/4_1_22/modules_in_tedf_4_1_22.jpg  Fabricated modules in TEDF ]
 
** [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 ]
 
* Light Monitoring System [https://halldweb.jlab.org/DocDB/0055/005548/001/lms_update.pdf April 1 update] -- Arshak
 
* Light Monitoring System [https://halldweb.jlab.org/DocDB/0055/005548/001/lms_update.pdf April 1 update] -- Arshak
 
* COMCAL tests, TAC running, etc. -- Sasha
 
* COMCAL tests, TAC running, etc. -- Sasha
 +
** A 3 x 3 calorimeter will be installed on the TAC platform. Will (can) be used as a TAC run during the CPP experiment and other tests in the future.
 
* Data analysis
 
* Data analysis
 
* Simulations
 
* Simulations
 +
 +
=Minutes=
 +
Attendees: Bill, Sasha, Olga, Axel, Phil, Igal, Jon, Liping, Zisis, Jane, Tim B., Azizah, Susan, S.T.
 +
* Olga has set up the GWU lab for production of silicon cookies
 +
* Sasha working on contract with GWU
 +
* NPS running out of space in their lab, will move crystals to our lab;  however, we will be moving to a new location some time soon (June?)
 +
* PMT exchanges continue with NPS
 +
* Module fabrication continues -- now up to 245
 +
* Tim W. inspected small FCAL prototype sent to us by Matt
 +
** Idea is to determine what we need to do to refurbish the lead glass modules in FCAL
 +
* Absorber in front of beam hole needs to go beyond conceptual stage
 +
* Sasha presented Arshak's update regarding LMS development
 +
** Ordered 80x45 cm^2 plexiglas plate with 4x4 cm^2 hole
 +
** Performed transmission tests on small prototype
 +
*** Roughed surface using sandpaper
 +
*** Glued fibers to face of plexiglas as opposed to drilling holes
 +
** Looking into using 4" integrating sphere
 +
** Plan to use 2 fibers per side per crystal row
 +
** Check stability using alpha source?
 +
* Had some discussion regarding getting students involved in summer
 +
** Liping, GWU, Phil all potentially can send students
 +
** Also master's student from CNU interested in getting involved
 +
** Sasha to clarify permission for students to come to lab with management
 +
* Need to update sensitivity plots for 40x40 insert

Latest revision as of 08:59, 4 April 2022

Meeting time and location

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

Agenda

  • Preparation for mass production of FCAL2 modules -- Sasha
    • 50 new CRYTUR crystals received
      • Need to perform a quality check
    • DSG group: preshaping (18 foils a day), wrapping (7 crystals a day on average, expect to wrap 10 crystals per day in the future).
    • Contract with the GWU is under preparation (SOW, sole source,...)
    • Chris A. continues to braze strips; discussions regarding brazing quality. Bobby preparing soft Iron housings.
    • Igal continues cutting ESR / Tedlar
  • Module fabrication -- Sasha
  • Light Monitoring System April 1 update -- Arshak
  • COMCAL tests, TAC running, etc. -- Sasha
    • A 3 x 3 calorimeter will be installed on the TAC platform. Will (can) be used as a TAC run during the CPP experiment and other tests in the future.
  • Data analysis
  • Simulations

Minutes

Attendees: Bill, Sasha, Olga, Axel, Phil, Igal, Jon, Liping, Zisis, Jane, Tim B., Azizah, Susan, S.T.

  • Olga has set up the GWU lab for production of silicon cookies
  • Sasha working on contract with GWU
  • NPS running out of space in their lab, will move crystals to our lab; however, we will be moving to a new location some time soon (June?)
  • PMT exchanges continue with NPS
  • Module fabrication continues -- now up to 245
  • Tim W. inspected small FCAL prototype sent to us by Matt
    • Idea is to determine what we need to do to refurbish the lead glass modules in FCAL
  • Absorber in front of beam hole needs to go beyond conceptual stage
  • Sasha presented Arshak's update regarding LMS development
    • Ordered 80x45 cm^2 plexiglas plate with 4x4 cm^2 hole
    • Performed transmission tests on small prototype
      • Roughed surface using sandpaper
      • Glued fibers to face of plexiglas as opposed to drilling holes
    • Looking into using 4" integrating sphere
    • Plan to use 2 fibers per side per crystal row
    • Check stability using alpha source?
  • Had some discussion regarding getting students involved in summer
    • Liping, GWU, Phil all potentially can send students
    • Also master's student from CNU interested in getting involved
    • Sasha to clarify permission for students to come to lab with management
  • Need to update sensitivity plots for 40x40 insert