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

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(Agenda)
 
Line 27: Line 27:
 
* Data analysis  
 
* Data analysis  
 
* Simulations
 
* Simulations
 +
 +
=Minutes=
 +
Attendees: Igal,Sasha,Zisis,Jane,Liping,Tim B.,Jon,Jared,Susan,S.T.
 +
* Sasha has been filling in a spreadsheet detailing the QA for each of the new batch of SICCAS crystals
 +
** Generally quality has improved over first batch, although there are still several discolored crystals
 +
** Packing: 20 crystals per box, bundles of 4 -- maybe not as safe as could be? (found 1 crystal with cracked face, will accept as spare)
 +
** Crystals systematically wider in middle relative to ends by about 30-40 microns
 +
** Some crystals are blurred, some contain bubbles, plan to make transmittance measurements and compare with company's measurements
 +
** Will provide feedback to Chinese company
 +
** Plan to continue QA the week of 11/9/20 -> clear procurement invoice
 +
* Next batch starting in next few months?  Try to establish more collaborative approach with company?
 +
* Module construction setup ready:  new temperature control for brazing
 +
* Mu-metal shields should be ready and delivered to TEDF week of 11/9/20
 +
* Still working on details of getting Zizis's group involved with PMT divider work
 +
* PCB layout for dividers finalized (exact details of resistors can be changed easily)
 +
** Goal for divider design is end of November, order in December
 +
* S.T. has been working on a generator for π0π0 background for η→π0γγ
 +
* S.T. working on implementing island algorithm for FCAL reconstruction
 +
** Zisis's student is working on machine learning
 +
*Igal looking at studying multi-photon channels with and without π0 mass constraints:  how to combine trees?

Latest revision as of 09:18, 9 November 2020

Meeting time and location= 9:00 am EST (JLab time) Bluejeans only


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

  • SICCAS crystals
-Visual inspection and dimensions

Minutes

Attendees: Igal,Sasha,Zisis,Jane,Liping,Tim B.,Jon,Jared,Susan,S.T.

  • Sasha has been filling in a spreadsheet detailing the QA for each of the new batch of SICCAS crystals
    • Generally quality has improved over first batch, although there are still several discolored crystals
    • Packing: 20 crystals per box, bundles of 4 -- maybe not as safe as could be? (found 1 crystal with cracked face, will accept as spare)
    • Crystals systematically wider in middle relative to ends by about 30-40 microns
    • Some crystals are blurred, some contain bubbles, plan to make transmittance measurements and compare with company's measurements
    • Will provide feedback to Chinese company
    • Plan to continue QA the week of 11/9/20 -> clear procurement invoice
  • Next batch starting in next few months? Try to establish more collaborative approach with company?
  • Module construction setup ready: new temperature control for brazing
  • Mu-metal shields should be ready and delivered to TEDF week of 11/9/20
  • Still working on details of getting Zizis's group involved with PMT divider work
  • PCB layout for dividers finalized (exact details of resistors can be changed easily)
    • Goal for divider design is end of November, order in December
  • S.T. has been working on a generator for π0π0 background for η→π0γγ
  • S.T. working on implementing island algorithm for FCAL reconstruction
    • Zisis's student is working on machine learning
  • Igal looking at studying multi-photon channels with and without π0 mass constraints: how to combine trees?