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

From GlueXWiki
Jump to: navigation, search
(Created page with "Meeting time and location: *9:30 am EST (JLab time) remote only * [https://halldweb.jlab.org/wiki-private/index.php/JEF_Weekly_Meeting#Connection_information Connection inform...")
 
 
(11 intermediate revisions by 3 users not shown)
Line 7: Line 7:
  
 
*'''Preparation of parts for ECAL''' -- Sasha  
 
*'''Preparation of parts for ECAL''' -- Sasha  
 +
** - signal cables -  done
 +
** - signal patch panel [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/10_13_2023/signal_patch_panel.jpg ] - done
 +
** - HV cables: received 165 cables 1445 in total
 +
** - HV distribution boards: in preparation
 +
** - LV cables: 100 cables received, 250 cables in total
 +
** - LV distribution boards. Received 4 boards, performed initial cehck, need to solder connectors [https://halldweb.jlab.org/detectors/fcal2/cables/lv_distribution/lv_dist_board.jpg ]
 +
** - Optical fibers and parts for the trigger/DAQ have been ordered
 
* '''Ongoing projects''' -- Sasha, all
 
* '''Ongoing projects''' -- Sasha, all
−
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / detector support group
+
** - Testing and labeling cables, 100 short LV cables tested and labeled during this week.
 +
** - Prepare modules for the TAC and prototypes (using crystals with some imperfections)
 +
***  26 modules for TAC [https://halldweb.jlab.org/detectors/fcal2/modules_for_prototype/tac_mod.jpg]  and 35 modules [https://halldweb.jlab.org/detectors/fcal2/modules_for_prototype/prot_mod.jpg] for the beam tests are ready
 +
** - Radiation tests of the PMT active base [https://halldweb.jlab.org/wiki/index.php/Active_Base_Radiation_Tests]
 +
*** Finished tests, working on the tech note
 +
** - [https://halldweb.jlab.org/detectors/AL/HallD_Racks Inventory database and GUI for installed electronics ]
 +
** - [https://halldweb.jlab.org/detectors/fcal2/installation/students_2023/list_of_students_2023.xlsx Summer Students (2023) ]
 +
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / George
 +
** - Testing procedure [https://halldweb.jlab.org/detectors/fcal2/dividers/divider_test_guide.pptx]
 +
** - ePASS submitted and approved
 +
** - George from the DSG continued testing dividers
 +
** - Have tested 637 + 134 = 771 dividers (about 100 available for testing) [https://halldweb.jlab.org/wiki/index.php/Final_test_of_dividers].
 +
** - Spare PMTs, have about 20, likely need more for the future (order 30 more )?
 
* '''Installation of the FCAL2 detector & integration to GlueX''' -- Sasha / Vlad  
 
* '''Installation of the FCAL2 detector & integration to GlueX''' -- Sasha / Vlad  
−
* '''Analysis/Simulation'''
+
**  Detector installation [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]
 +
** Installation of the LMS
 +
*** 175 fibers installed during this week (488 in total) [https://logbooks.jlab.org/entry/4253130] [https://logbooks.jlab.org/entry/4249236]
 +
** Cable and divider installation [https://logbooks.jlab.org/entry/4249243][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/02_16_2024/install_cable1.jpg][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/02_16_2024/install_cable2.jpg]
 +
** Still no power on the ECAL platform  (expect delay with the development of the trigger/DAQ)
 +
** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page]
 +
*'''Analysis/Simulation'''
 +
** [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6347 Rough draft of Feb. collaboration talk] -- Simon
 +
** [https://halldweb.jlab.org/wiki/images/1/1e/Glue-jefxd-igal-jaegle-16042024.pdf updates] -- ig
 +
 
 +
=Minutes=
 +
Attendees: Sasha, Bill, Igal, Liping, Vlad, Laveen, Zisis, Stjepan, Olga, Susan, Jane, Jon, S.T.
 +
* Chris S. fabricating dividers, George J. from detector support group testing them (134 last week)
 +
** ~100 to be tested
 +
** Fabrication quality improved (only one "bad", already fixed)
 +
* Expect to use 3x amplier ~10x10 array around beam pipe due to high rate
 +
** Also plan to run at lower HV than others
 +
* Cables/dividers installed up to third row from bottom of insert
 +
** Desigining tool for replacing dividers:  laparoscopy grasping forceps
 +
** Testing dividers in place with HV (make light tight first)
 +
* LMS installation continues
 +
** Needed to order face shield due to UV light backsplash
 +
** Fibers ordered into bundles, clamped and clamps attached to plexiglas
 +
** Position of integrating sphere to be fixed
 +
** Some bad fibers identified, moved to side
 +
* S.T. showed look at simulation of a small inner TOF counter covering the hole not covered by the regular TOF
 +
** Rates in 1 mm wide strips look manageable
 +
** Need to check impact of new veto on golden channel
 +
* Beam test in March: only GEMTRD studies, nothing else turned on
 +
** Hopefully no significant activation in inner region of insert
 +
* Igal studying golden channel using low level objects (not DReactionFilter)
 +
** Chi^2 test to select best candidate per event
 +
** BCAL veto needed to get rid of ω background
 +
** TOF veto not as effective as originally thought after TOF bug in simulation found and fixed
 +
** Working with Daniel L. on machine learning algorithm

Latest revision as of 10:05, 19 February 2024

Meeting time and location:


Agenda

  • Preparation of parts for ECAL -- Sasha
    • - signal cables - done
    • - signal patch panel [1] - done
    • - HV cables: received 165 cables 1445 in total
    • - HV distribution boards: in preparation
    • - LV cables: 100 cables received, 250 cables in total
    • - LV distribution boards. Received 4 boards, performed initial cehck, need to solder connectors [2]
    • - Optical fibers and parts for the trigger/DAQ have been ordered
  • Ongoing projects -- Sasha, all
  • Testing of PMT dividers -- Sasha / Vlad / George
    • - Testing procedure [6]
    • - ePASS submitted and approved
    • - George from the DSG continued testing dividers
    • - Have tested 637 + 134 = 771 dividers (about 100 available for testing) [7].
    • - Spare PMTs, have about 20, likely need more for the future (order 30 more )?
  • Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad
    • Detector installation [8][9][10]
    • Installation of the LMS
      • 175 fibers installed during this week (488 in total) [11] [12]
    • Cable and divider installation [13][14][15]
    • Still no power on the ECAL platform (expect delay with the development of the trigger/DAQ)
    • Detector installation page
  • Analysis/Simulation

Minutes

Attendees: Sasha, Bill, Igal, Liping, Vlad, Laveen, Zisis, Stjepan, Olga, Susan, Jane, Jon, S.T.

  • Chris S. fabricating dividers, George J. from detector support group testing them (134 last week)
    • ~100 to be tested
    • Fabrication quality improved (only one "bad", already fixed)
  • Expect to use 3x amplier ~10x10 array around beam pipe due to high rate
    • Also plan to run at lower HV than others
  • Cables/dividers installed up to third row from bottom of insert
    • Desigining tool for replacing dividers: laparoscopy grasping forceps
    • Testing dividers in place with HV (make light tight first)
  • LMS installation continues
    • Needed to order face shield due to UV light backsplash
    • Fibers ordered into bundles, clamped and clamps attached to plexiglas
    • Position of integrating sphere to be fixed
    • Some bad fibers identified, moved to side
  • S.T. showed look at simulation of a small inner TOF counter covering the hole not covered by the regular TOF
    • Rates in 1 mm wide strips look manageable
    • Need to check impact of new veto on golden channel
  • Beam test in March: only GEMTRD studies, nothing else turned on
    • Hopefully no significant activation in inner region of insert
  • Igal studying golden channel using low level objects (not DReactionFilter)
    • Chi^2 test to select best candidate per event
    • BCAL veto needed to get rid of ω background
    • TOF veto not as effective as originally thought after TOF bug in simulation found and fixed
    • Working with Daniel L. on machine learning algorithm
Retrieved from "https://halldweb.jlab.org/wiki/index.php?title=JEF_meeting,_February_16,_2024&oldid=124778"