Difference between revisions of "JEF meeting, June 24, 2022"

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* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=5655 DNP2022 abstract]
 
* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=5655 DNP2022 abstract]
 
* Simulations/Analysis
 
* Simulations/Analysis
 +
** [https://halldweb.jlab.org/wiki/images/d/d0/Glue-jefxd-igal-jaegle-24062022.pdf Update on eta to ggpi^0] -- ig
 +
 
* Preparation of parts for FCAL2 modules -- Sasha
 
* Preparation of parts for FCAL2 modules -- Sasha
 +
**[https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/part_preparation.pdf Preparation of parts][https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/6_17_22/students1.jpg][https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/6_17_22/students2.jpg][https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/6_17_22/students3.jpg]
 +
*** Preshaping ESR foils (with the DSG)
 +
*** Wrapping crystals (with the DSG)
 +
*** Module fabrication
 +
**[https://halldweb.jlab.org/detectors/fcal2/module_fabrication/wrapped/wrapped_crytur.pdf Wrapped CRYTUR crystals:] 491 (60 + 185 + 166 + 80)
 +
*** Remaining 126, 1.5 weeks of work
 
**Students reports
 
**Students reports
 
* Module fabrication  -- Sasha
 
* Module fabrication  -- Sasha
 +
** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/fcal_fabrication.pdf  Status of fabrication ]
 +
** Fabricated modules: <span style="color:#FF0000"> Total 598 </span>
 +
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf All 561 SICCAS]
 +
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication_crytur.pdf 37 CRYTUR], Remaining: 590
 +
** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/6_17_22/clean_room.jpg Clean room EEL126]
 +
 +
**Students reports
 
* Light Monitoring System -- Arshak
 
* Light Monitoring System -- Arshak
 +
 +
=Minutes=
 +
Attendees: Bill,Sasha,Igal,Zisis,Arshak,Tegan,Liping,Jane,Jon,Azizah,Olga,Phil,S.T.
 +
*Igal gave an update on &eta;&rarr;&pi;0&gamma;&gamma;
 +
** Currently using default algorithm for analysis while we work on improving the island algorithm
 +
** Included 2&pi;0 background but most of the background after all cuts are applied is due to &eta;&rarr;3&pi;0 and &eta;&rarr;2&gamma;
 +
*** Should also include other hadronic backgrounds Sasha included in original simulation for proposal
 +
** Extracted limit for B&rarr;&pi;0&gamma; using FCAL-2
 +
*** Used +/-2.5&sigma; mass window
 +
*** Found worse limit by about an order of magnitude compared to proposal, but should recheck using criteria Liping used
 +
* For island algorithm would like to compare shower profile for insert to result of snake scan (real data from December 2019)
 +
** Need to take into account size of beam
 +
* Module fabrication continues with great assistance from undergraduates
 +
** Students working wrapping crystals, ESR jigs, etc. -- Brandyn gave a short update on their activities
 +
** We are still short ~180 crystals
 +
** Grand total up to 598 fabricated modules, 37 of which are CRYTUR crystals
 +
** Still have quality control issues with brazing of straps
 +
** Waiting for mu-metal, but no obvious bottlenecks right now (have enough mu-metal for 1 month of work)
 +
** Have additional 3D printed jigs for gluing light guides
 +
* Arshak gave an update on LMS development
 +
** Integrating sphere has arrived
 +
** Received 200 feat of fiber
 +
** To address issue of uniformity of light output over extent of plexiglas, tried reflective paint on edges and coating one side of plexiglas with gortex reflective material on small prototype
 +
*** Looks more uniform but needs to be repeated with full scale prototype

Latest revision as of 08:06, 1 July 2022

meeting time and location

  • 9:30 am EST (JLab time) remote only
  • Zoom meeting ID: 161 050 9142 Passcode: 004965

Agenda

    • Students reports
  • Light Monitoring System -- Arshak

Minutes

Attendees: Bill,Sasha,Igal,Zisis,Arshak,Tegan,Liping,Jane,Jon,Azizah,Olga,Phil,S.T.

  • Igal gave an update on η→π0γγ
    • Currently using default algorithm for analysis while we work on improving the island algorithm
    • Included 2π0 background but most of the background after all cuts are applied is due to η→3π0 and η→2γ
      • Should also include other hadronic backgrounds Sasha included in original simulation for proposal
    • Extracted limit for B→π0γ using FCAL-2
      • Used +/-2.5σ mass window
      • Found worse limit by about an order of magnitude compared to proposal, but should recheck using criteria Liping used
  • For island algorithm would like to compare shower profile for insert to result of snake scan (real data from December 2019)
    • Need to take into account size of beam
  • Module fabrication continues with great assistance from undergraduates
    • Students working wrapping crystals, ESR jigs, etc. -- Brandyn gave a short update on their activities
    • We are still short ~180 crystals
    • Grand total up to 598 fabricated modules, 37 of which are CRYTUR crystals
    • Still have quality control issues with brazing of straps
    • Waiting for mu-metal, but no obvious bottlenecks right now (have enough mu-metal for 1 month of work)
    • Have additional 3D printed jigs for gluing light guides
  • Arshak gave an update on LMS development
    • Integrating sphere has arrived
    • Received 200 feat of fiber
    • To address issue of uniformity of light output over extent of plexiglas, tried reflective paint on edges and coating one side of plexiglas with gortex reflective material on small prototype
      • Looks more uniform but needs to be repeated with full scale prototype
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