Difference between revisions of "JEF meeting, October 30, 2020"

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(Created page with "Meeting time and location= 9:00 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=
* [https://halldweb.jlab.org/gluex_sim/SubmitSim.html MCWrapper-bot]+JEF:  Thomas B.
 
 
* SICCAS crystals
 
* SICCAS crystals
 +
::[https://logbooks.jlab.org/entry/3855241 Transmission measurement, batch 1]
 
* [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.
 
* Data analysis  
 
* Data analysis  
 
* Simulations
 
* Simulations
 +
 +
=Minutes=
 +
Attendees: Varun, Jon, Zisis, Sasha, Phil, Liping, Tim B., Jared.
 +
* Sasha was able to use Carl Zorn's lab to do transmittance measurements of 5 crystals
 +
** The crystal with the worst transmission profile happens to be the one that is most brown
 +
** Compare to Shanghai measurements?
 +
** Question: optical restoration test?  Maybe use UV light or bake in an oven?  Not tried yet.
 +
* We received 165 new SICCAS crystals, QA has already started
 +
** Crystals arrived in boxes of 20 -- maybe too many per box?  Concern from Sasha about damage, but first 2 sets of crystals seem fine.
 +
** First 40 crystals mostly look good -- more or less within spec for dimensions except thicker in the middle relative to the ends by about 30-40 microns
 +
** Two suspicious crystals in first box.
 +
* Temperature control for brazing being developed; finalizing setup
 +
* Problem with 2 dividers that did not work during beam test traced to socket
 +
** Work is proceeding to finalize design.  Plan for Zisis to participate in PMT divider effort.
 +
* Igal generated millions of simulated events for JEF studies: [https://mailman.jlab.org/pipermail/jef/2020-October/000533.html Mailing list message]

Latest revision as of 14:45, 2 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
Transmission measurement, batch 1

Minutes

Attendees: Varun, Jon, Zisis, Sasha, Phil, Liping, Tim B., Jared.

  • Sasha was able to use Carl Zorn's lab to do transmittance measurements of 5 crystals
    • The crystal with the worst transmission profile happens to be the one that is most brown
    • Compare to Shanghai measurements?
    • Question: optical restoration test? Maybe use UV light or bake in an oven? Not tried yet.
  • We received 165 new SICCAS crystals, QA has already started
    • Crystals arrived in boxes of 20 -- maybe too many per box? Concern from Sasha about damage, but first 2 sets of crystals seem fine.
    • First 40 crystals mostly look good -- more or less within spec for dimensions except thicker in the middle relative to the ends by about 30-40 microns
    • Two suspicious crystals in first box.
  • Temperature control for brazing being developed; finalizing setup
  • Problem with 2 dividers that did not work during beam test traced to socket
    • Work is proceeding to finalize design. Plan for Zisis to participate in PMT divider effort.
  • Igal generated millions of simulated events for JEF studies: Mailing list message