JEF meeting, May 14, 2021

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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.

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Agenda

  • SICCAS crystals
  • Module fabrication
Brazing of brass strips
Update module fabrication procedures
  • COMCAL tests, TAC running, etc.
Check of CCAL dividers

Minutes

Attendees: Sasha,Arshak,Jared,Varun,Zisis,Phil,Liping,Azizah,Tim B.,Susan,Bill,Olga,Jane,S.T.

  • Still waiting for word from SICCAS regarding delivery of remaining crystals...
    • Will need to spend money soon
    • Have dedicated meeting next week regarding strategy?
  • Sasha prepared several brass strip assemblies
    • Working on brazing procedure -- can get good results with sufficient care when applying the procedure
    • Chris from Tim W.'s group will take over brazing in the future, part time.
  • Sasha updated the overall procedure for module production
    • Some parts to assist with the assembly are 3d-printed: these can be outsourced to U. Regina and UNCW
    • Have new digital scale for mixing components for silicone cookies
  • Sasha worked with Vlad B. measuring PMT diameters for NPS
    • NPS is using the same model of PMT, so plan to arrange trade when our order comes in -- they can use diameters that we cannot use due to tolerance
  • Sasha continues to check performance of CCAL dividers
  • Fernando has prototype PCB layout for divider with amplifier planned for FCAL-2
  • Liping hopes to send students in summer; not clear that they will be allowed to come
  • Simon presented Igal's new results for dark scalar search using S→γγ and S→e+e-
  • Azizah met with Simon regarding the Island algorithm and Rebecca from IU regarding machine learning algorithm for hadronic split-offs in the FCAL