Difference between revisions of "JEF meeting, April 26, 2024"

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** - HV long cable, 18 ready (out of 36)  
 
** - HV long cable, 18 ready (out of 36)  
 
** - HV distribution boards: in preparation
 
** - HV distribution boards: in preparation
** - LV cables: waiting for about 190 cables (will need to test, label, and bundle)
+
** - LV cables: waiting for about 160 cables (will need to test, label, and bundle)
 
** - LV distribution boards [https://halldweb.jlab.org/detectors/fcal2/cables/lv_distribution/lv_dist_board.jpg ]. Have to populate with connectors, and design a box around the PCB
 
** - LV distribution boards [https://halldweb.jlab.org/detectors/fcal2/cables/lv_distribution/lv_dist_board.jpg ]. Have to populate with connectors, and design a box around the PCB
 
** - Chris S. is working on the prototype of the LED board. Currently 5 blue LEDs, consider to add red LEDs as well
 
** - Chris S. is working on the prototype of the LED board. Currently 5 blue LEDs, consider to add red LEDs as well
 
* '''Ongoing projects'''  
 
* '''Ongoing projects'''  
** - Bundling short cables (groups of 7, 7, and 6 cables): signal (done), HV (done), LV (29 layers done, waiting for cables)
+
** - Bundling short cables (groups of 7, 7, and 6 cables): signal (done), HV (done), LV (36 layers done, waiting for cables) [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_26_2024]
** - Testing, labeling, and bundling LV cables [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_12_2024/cable_box1.jpg] [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_12_2024/cable_box2.jpg] [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_12_2024/cable_box3.jpg]
+
**  - [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_26_2024/Status-Report-Laveen.pdf Update from Laveen]
 
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / George / Mindy
 
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / George / Mindy
 
** - Testing procedure [https://halldweb.jlab.org/detectors/fcal2/dividers/divider_test_guide.pptx]
 
** - Testing procedure [https://halldweb.jlab.org/detectors/fcal2/dividers/divider_test_guide.pptx]
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** Ethernet switch installed [https://logbooks.jlab.org/entry/4287964]
 
** Ethernet switch installed [https://logbooks.jlab.org/entry/4287964]
 
** Connecting crates to the switch
 
** Connecting crates to the switch
 +
** Preparing for testing installed dividers
 
** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page]
 
** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page]
 
*** (links from the previous meetings [https://logbooks.jlab.org/book/halld][https://halldweb.jlab.org/detectors/fcal2/installation/photos/install_fcal/students_detector1.jpg][https://halldweb.jlab.org/detectors/fcal2/installation/photos/install_fcal/students_detector.jpg])
 
*** (links from the previous meetings [https://logbooks.jlab.org/book/halld][https://halldweb.jlab.org/detectors/fcal2/installation/photos/install_fcal/students_detector1.jpg][https://halldweb.jlab.org/detectors/fcal2/installation/photos/install_fcal/students_detector.jpg])
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*** --prototype of the ECAL veto counter
 
*** --prototype of the ECAL veto counter
 
*** --study shower profile using PS (also transition region between lead tungstate and LG modules (?) )
 
*** --study shower profile using PS (also transition region between lead tungstate and LG modules (?) )
*'''Analysis/Simulation'''
 
** [https://halldweb.jlab.org/wiki/images/7/7c/Glue-jefxd-igal-jaegle-19042024.pdf Updates] --ig
 
 
*'''FCAL2 poster for open house?'''
 
*'''FCAL2 poster for open house?'''
 
** JEF/ECAL/FCAL poster   
 
** JEF/ECAL/FCAL poster   
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*'''Analysis/Simulation'''
 
*'''Analysis/Simulation'''
 
** Update on pi0gg bggen studies [https://halldweb.jlab.org/DocDB/0064/006427/001/JEF%20Simulations%20v2.6.pdf] -- Stjepan
 
** Update on pi0gg bggen studies [https://halldweb.jlab.org/DocDB/0064/006427/001/JEF%20Simulations%20v2.6.pdf] -- Stjepan
[[[[File:Status-Report-Laveen-copy.pdf]]
+
 
 +
=Minutes=
 +
 
 +
Attendees: Bill, Laveen, Igal, Vlad, Sasha, Jon, Stjepan, Phil, Liping, Jane, S.T.
 +
* Still waiting for final batch of LV cables
 +
* Chris S. working on LED driver board
 +
* PMT divider testing continues, fewer than 100 need to be tested (due to regulator fix)
 +
* Laveen reported on his cable bundling+labeling and translation table work
 +
* 36 PMT dividers installed, working on making dark room light tight to test in situ
 +
* Optical fiber + ethernet switch installation for trigger electronics continues
 +
* Some discussion regarding physics trigger:  will use new VTP boards for ECAL
 +
** ECAL to be treated like other detectors:  inclusion in energy sum
 +
*** Need to equalize gains using HV, because no individual gains in flashADC input to trigger
 +
** LED using CAEN1495 pulser as separate trigger input on face of trigger supervisor
 +
* Igal identified sources of 2γ background in η→π0γγ
 +
* Stjepan gave update on bggen background studies for η→π0γγ
 +
* Plan to generate large sample of simulated events on OSG

Latest revision as of 09:18, 29 April 2024

Meeting time and location:

  • Preparation of parts for ECAL -- Sasha
    • - signal cables - done
    • - signal patch panel [1] - done
    • - HV short cables: received, checked, labeled (last week)
    • - HV long cable, 18 ready (out of 36)
    • - HV distribution boards: in preparation
    • - LV cables: waiting for about 160 cables (will need to test, label, and bundle)
    • - LV distribution boards [2]. Have to populate with connectors, and design a box around the PCB
    • - Chris S. is working on the prototype of the LED board. Currently 5 blue LEDs, consider to add red LEDs as well
  • Ongoing projects
    • - Bundling short cables (groups of 7, 7, and 6 cables): signal (done), HV (done), LV (36 layers done, waiting for cables) [3]
    • - Update from Laveen
  • Testing of PMT dividers -- Sasha / Vlad / George / Mindy
    • - Testing procedure [4]
    • - Mindy has finished with preparing all sockets (~1650) !
    • - All dividers have been fabricated
    • - Need to remove power regulators on about 200 dividers
    • - George has tested about 1400 dividers [5].
    • - Adding ECAL (and updating FCAL) translation table in the TT.DB (needed for EPICS scalers)
  • Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
    • Submitted ePAS for testing installed dividers
    • Installation of the LMS has been completed [6]
    • Cable and divider installation [7]
      • Install cable bundles on vertical chains
      • Sort out dividers, set up jumpers (amplifier/by-pass) a]nd install them.
    • Two optical patch panels for the trigger distribution installed (Armen and Mark) [8] [9]
    • Ethernet switch installed [10]
    • Connecting crates to the switch
    • Preparing for testing installed dividers
    • Detector installation page
    • Other hardware projects
      • --prototype of the ECAL veto counter
      • --study shower profile using PS (also transition region between lead tungstate and LG modules (?) )
  • FCAL2 poster for open house?
    • JEF/ECAL/FCAL poster
    • exhibit stand (modules, PMTs, etc.)
  • Analysis/Simulation
    • Update on pi0gg bggen studies [14] -- Stjepan

Minutes

Attendees: Bill, Laveen, Igal, Vlad, Sasha, Jon, Stjepan, Phil, Liping, Jane, S.T.

  • Still waiting for final batch of LV cables
  • Chris S. working on LED driver board
  • PMT divider testing continues, fewer than 100 need to be tested (due to regulator fix)
  • Laveen reported on his cable bundling+labeling and translation table work
  • 36 PMT dividers installed, working on making dark room light tight to test in situ
  • Optical fiber + ethernet switch installation for trigger electronics continues
  • Some discussion regarding physics trigger: will use new VTP boards for ECAL
    • ECAL to be treated like other detectors: inclusion in energy sum
      • Need to equalize gains using HV, because no individual gains in flashADC input to trigger
    • LED using CAEN1495 pulser as separate trigger input on face of trigger supervisor
  • Igal identified sources of 2γ background in η→π0γγ
  • Stjepan gave update on bggen background studies for η→π0γγ
  • Plan to generate large sample of simulated events on OSG