Difference between revisions of "JEF meeting, March 6, 2020"

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(Created page with "Meeting time and location= 10:00 am EST (JLab time) Hall D counting house =Connection instructions= <div class="toccolours mw-collapsible mw-collapsed"> We are using [https:...")
 
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* Status of the crystal production (SICCAS)
 
* Status of the crystal production (SICCAS)
 
* [https://halldweb.jlab.org/wiki/index.php/Module_Design Preparation for module fabrication]
 
* [https://halldweb.jlab.org/wiki/index.php/Module_Design Preparation for module fabrication]
 +
 +
=Minutes=
 +
Attendees:  Arshak, Phil, Sasha, Igal, Zisis, Liping, Tim B., Josh
 +
*SICCAS update:  160 crystals (60 for Hall C) are packed ready to be shipped, tentatively on Friday 3/6.
 +
** On schedule to finish remaining 400 (of 500) in April, should receive at JLab by summer?
 +
** Need new contract for next set of 500 crystals
 +
*** Needs DOE approval, could take awhile
 +
*** Working out an agreement between Wuhan and SICCAS folks for crystal qa.
 +
*** Specs stay the same, hopefully price per crystal will also stay the same.
 +
* Light guide design has changed slightly:  plan to go with machined 18.5 mm diameter rods
 +
** Increases price by a factor of 2, still okay with Eugene
 +
** Quote from Eljen is quite high, and don't have specs for material from Chinese supplier of original 18 mm diameter rods.
 +
*Flanges on order
 +
*Mu-metal cylinders:  PR submitted
 +
* Have 24 PMT (soft iron) housing pieces, not annealed yet.
 +
*Most other pieces (except for the crystals themselves!) here ready for assembly.  Plan to start with 30 from CUA.
 +
*Summer students.
 +
** PHil C. will station a student at JLab for 8 weeks in the summer
 +
** Karthik from Regina will be here for 3 weeks in March-April
 +
** Liping recruiting students right now, 3-4 for summer?
 +
* PMT base divider tests:  14 of 3x amplification variety already installed in COMCAL, 14 of the 6x variety awaiting 4-5 hours of downtime in the Hall
 +
** Plan to use COMCAL as TAC, also read out during regular data taking
 +
*** Need gain calibration -- snake scan
 +
* Loan agreement with UNCW is signed:  Tim B. has PMT/divider
 +
** working on a longer term plan.
 +
** Plan to do rate tests, linearity studies.

Revision as of 15:41, 9 March 2020

Meeting time and location= 10:00 am EST (JLab time) Hall D counting house


Connection instructions

We are using BlueJeans Video/Audio conferencing. Our meeting ID number is 992533564. Click "Expand" for more details.

  • Make sure you have created a BlueJeans account via your JLab CUE account using this link:
  • If connecting via Web Browser: click this link (no passcode is needed):
  • If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"
  • If connecting via Polycom unit:
    • Dial 199.48.152.152 or bjn.vc
    • Enter meeting ID above

Agenda

Minutes

Attendees: Arshak, Phil, Sasha, Igal, Zisis, Liping, Tim B., Josh

  • SICCAS update: 160 crystals (60 for Hall C) are packed ready to be shipped, tentatively on Friday 3/6.
    • On schedule to finish remaining 400 (of 500) in April, should receive at JLab by summer?
    • Need new contract for next set of 500 crystals
      • Needs DOE approval, could take awhile
      • Working out an agreement between Wuhan and SICCAS folks for crystal qa.
      • Specs stay the same, hopefully price per crystal will also stay the same.
  • Light guide design has changed slightly: plan to go with machined 18.5 mm diameter rods
    • Increases price by a factor of 2, still okay with Eugene
    • Quote from Eljen is quite high, and don't have specs for material from Chinese supplier of original 18 mm diameter rods.
  • Flanges on order
  • Mu-metal cylinders: PR submitted
  • Have 24 PMT (soft iron) housing pieces, not annealed yet.
  • Most other pieces (except for the crystals themselves!) here ready for assembly. Plan to start with 30 from CUA.
  • Summer students.
    • PHil C. will station a student at JLab for 8 weeks in the summer
    • Karthik from Regina will be here for 3 weeks in March-April
    • Liping recruiting students right now, 3-4 for summer?
  • PMT base divider tests: 14 of 3x amplification variety already installed in COMCAL, 14 of the 6x variety awaiting 4-5 hours of downtime in the Hall
    • Plan to use COMCAL as TAC, also read out during regular data taking
      • Need gain calibration -- snake scan
  • Loan agreement with UNCW is signed: Tim B. has PMT/divider
    • working on a longer term plan.
    • Plan to do rate tests, linearity studies.
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