Difference between revisions of "JEF meeting, September 18, 2020"

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(Created page with "Meeting time and location= 9:30 am EST (JLab time) Bluejeans only =Connection instructions= <div class="toccolours mw-collapsible mw-collapsed"> We are using [https://cc.jla...")
 
 
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=Agenda=
 
=Agenda=
 
* SICCAS crystals
 
* SICCAS crystals
 +
::-[https://logbooks.jlab.org/entry/3849620 PS test, batch 7]
 +
::-[https://logbooks.jlab.org/entry/3851043 New batch of crystals installed]
 +
::-[https://logbooks.jlab.org/entry/3850957 New dividers installed on CCAL]
 
* [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]
 
* COMCAL tests, TAC running, etc.
 
* COMCAL tests, TAC running, etc.
 
* Simulations
 
* Simulations
 +
** [https://halldweb.jlab.org/wiki/images/c/c9/Jared1.pdf Dark Scalar Boson PDF study] (Jared R.)
 +
 +
=Minutes=
 +
Attendees: Phil,Igal,Jared,Varun,Azizah,Liping,Jon,Zisis,Jane,Arshak,Sasha,Tim B., Bill B., S.T.
 +
* Sasha and Josh installed another set of 12 crystals in the PS setup in the hall
 +
** Have now studied ~80 crystals with this setup
 +
** Batch 8 had some internal imperfections
 +
** Plan to send 2 discolored SICCAS crystals back to Shanghai after doing transmittance measurements
 +
* 3 modified PMT dividers have been installed in COMCAL
 +
** 2 have been fixed after correcting wrong resistor values (needed to keep current draw below 1 mA)
 +
** Hope to test with beam this weekend
 +
** Plan is to finalize design soon, then order 150 bases for COMCAL refurbishment
 +
* Jared presented his study of signal PDFs for Dark Scalar search
 +
** Using 2 Crystal Ball functions to parameterize detector response (could in principle use double Guassian)
 +
*** Pull distributions look good
 +
*** Iterative parameter smoothing is working
 +
** Developed a set of python scripts

Latest revision as of 17:09, 18 September 2020

Meeting time and location= 9:30 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
-PS test, batch 7
-New batch of crystals installed
-New dividers installed on CCAL

Minutes

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

  • Sasha and Josh installed another set of 12 crystals in the PS setup in the hall
    • Have now studied ~80 crystals with this setup
    • Batch 8 had some internal imperfections
    • Plan to send 2 discolored SICCAS crystals back to Shanghai after doing transmittance measurements
  • 3 modified PMT dividers have been installed in COMCAL
    • 2 have been fixed after correcting wrong resistor values (needed to keep current draw below 1 mA)
    • Hope to test with beam this weekend
    • Plan is to finalize design soon, then order 150 bases for COMCAL refurbishment
  • Jared presented his study of signal PDFs for Dark Scalar search
    • Using 2 Crystal Ball functions to parameterize detector response (could in principle use double Guassian)
      • Pull distributions look good
      • Iterative parameter smoothing is working
    • Developed a set of python scripts
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