Difference between revisions of "JEF meeting, August 16, 2024"

From GlueXWiki
Jump to: navigation, search
m (→‎Minutes)
 
(2 intermediate revisions by 2 users not shown)
Line 22: Line 22:
 
** [https://halldweb.jlab.org/detectors/fcal2/installation/safety_docs/Document_240716_195013-1.pdf Safety briefings]
 
** [https://halldweb.jlab.org/detectors/fcal2/installation/safety_docs/Document_240716_195013-1.pdf Safety briefings]
 
* '''Students''' -- Sasha
 
* '''Students''' -- Sasha
−
** - Expect one student from Wuhan, paperwork is in process.
+
** - Expect one student from Wuhan, waiting for the US visa
 
* '''Beam tests with the PS'''
 
* '''Beam tests with the PS'''
 
***  measure shower beam profile and reconstruction in the crystal/LG transition region  
 
***  measure shower beam profile and reconstruction in the crystal/LG transition region  
Line 31: Line 31:
 
** [https://halldweb.jlab.org/wiki/images/1/19/August-16-Status-Update.pdf Close shower separation studies] -- Laveen
 
** [https://halldweb.jlab.org/wiki/images/1/19/August-16-Status-Update.pdf Close shower separation studies] -- Laveen
 
*'''New manpower for the upcoming run and data analysis''', -- Liping
 
*'''New manpower for the upcoming run and data analysis''', -- Liping
 +
 +
=Minutes=
 +
Attendees:  Bill, Laveen, Liping, Jane, Vlad, Sasha, Axel, Susan, Stjepan, S.T.
 +
* Front panel of two LV distribution boards needed to be fixed
 +
* 2 HV cable bundles each containing 9 cables are in Hall, 1 more bundle has been assembled
 +
* Waiting for HV distribution boards, due in ~2 weeks
 +
* 6 PMT divider layers remain to be installed
 +
** Found some common problems:  weak solder joints, bad connectors
 +
** One short cable needed to be swapped out
 +
** Added velcro band to connect chains (supporting cables) together
 +
* Laveen presented an update on 2-shower separation studies
 +
** Separation efficiency at small separation distances depends on energy asymmetry of two showers and total energy
 +
* Liping reported that a professor from the China University of Geosciences (Wuhan) is interested in joining GlueX to work on JEF physics
 +
* Vlad pointed out that we need to make sure that the test setup in one arm of the PS setup in the Hall D we have used in the past is restored
 +
** Could use this to measure shower profile + study lead glass-lead tungstate interface with small-scale prototype
 +
*** Will need hardware design/CAD drawings for box to contain crystals and lead glass blocks
 +
** Test veto prototype?  Thin scintillator paddles with wave-length shifting fibers
 +
** Sasha thinking about run plan for usage of this arm, will work on a wiki page

Latest revision as of 16:28, 16 August 2024

Meeting time and location:

Agenda

  • Preparation of parts for ECAL -- Sasha
    • - HV long cable: Sammy and Mindy have to assemble 10 cables
    • - HV distribution boards [1][2]
    • - Fix front panel of two LV distribution boards, re-install the boards on the detector frame [3]
    • - LED: Started testing the prototype of the LMS (need to make the detector room light tight)
  • Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
    • Report from students [4]
    • Installation of HV cables [5][6]
- two remaining bundle of cables will be ready in about a week
  • Students -- Sasha
    • - Expect one student from Wuhan, waiting for the US visa
  • Beam tests with the PS
      • measure shower beam profile and reconstruction in the crystal/LG transition region
      • (install prototype with 5x5 PbWO4 modules + ? LG)
  • Other hardware projects
    • prototype of the ECAL veto counter (?)
  • Analysis/Simulation
  • New manpower for the upcoming run and data analysis, -- Liping

Minutes

Attendees: Bill, Laveen, Liping, Jane, Vlad, Sasha, Axel, Susan, Stjepan, S.T.

  • Front panel of two LV distribution boards needed to be fixed
  • 2 HV cable bundles each containing 9 cables are in Hall, 1 more bundle has been assembled
  • Waiting for HV distribution boards, due in ~2 weeks
  • 6 PMT divider layers remain to be installed
    • Found some common problems: weak solder joints, bad connectors
    • One short cable needed to be swapped out
    • Added velcro band to connect chains (supporting cables) together
  • Laveen presented an update on 2-shower separation studies
    • Separation efficiency at small separation distances depends on energy asymmetry of two showers and total energy
  • Liping reported that a professor from the China University of Geosciences (Wuhan) is interested in joining GlueX to work on JEF physics
  • Vlad pointed out that we need to make sure that the test setup in one arm of the PS setup in the Hall D we have used in the past is restored
    • Could use this to measure shower profile + study lead glass-lead tungstate interface with small-scale prototype
      • Will need hardware design/CAD drawings for box to contain crystals and lead glass blocks
    • Test veto prototype? Thin scintillator paddles with wave-length shifting fibers
    • Sasha thinking about run plan for usage of this arm, will work on a wiki page
Retrieved from "https://halldweb.jlab.org/wiki/index.php?title=JEF_meeting,_August_16,_2024&oldid=126593"