Difference between revisions of "JEF meeting, May 31, 2024"
From GlueXWiki
(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...") |
m (→Minutes) |
||
(4 intermediate revisions by 3 users not shown) | |||
Line 2: | Line 2: | ||
*9:30 am EST (JLab time) remote only | *9:30 am EST (JLab time) remote only | ||
* [https://halldweb.jlab.org/wiki-private/index.php/JEF_Weekly_Meeting#Connection_information Connection information] | * [https://halldweb.jlab.org/wiki-private/index.php/JEF_Weekly_Meeting#Connection_information Connection information] | ||
+ | =Agenda= | ||
=Agenda= | =Agenda= | ||
*'''Preparation of parts for ECAL''' -- Sasha | *'''Preparation of parts for ECAL''' -- Sasha | ||
+ | ** - HV long cable, 18 ready (out of 36), discussion with the DSG group regarding help | ||
+ | ** - HV distribution boards: has not yet been designed, need 4 boards | ||
+ | ** - LV cables: missing about 20 cables, waiting for the last delivery batch. | ||
+ | ** - LV distribution boards [https://halldweb.jlab.org/detectors/fcal2/cables/lv_distribution/lv_dist_board.jpg ]. One board out of 4 is ready, using for testing dividers [[Media:lv_distribution.jpg]] | ||
+ | ** - LED: prototype board is ready, have to start testing | ||
* '''Ongoing projects''' - All | * '''Ongoing projects''' - All | ||
+ | ** - [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/05_10_2024/May-10-2024-L.pdf Update from Laveen] | ||
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / George / Mindy | * '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / George / Mindy | ||
+ | ** - [[File:regulators.xlsx]] Map of dividers with removed regulators | ||
+ | ** - Testing procedure [https://halldweb.jlab.org/detectors/fcal2/dividers/divider_test_guide.pptx] | ||
+ | ** - All dividers have been fabricated and tested by George [https://halldweb.jlab.org/wiki/index.php/Final_test_of_dividers] | ||
+ | *** Continue removing regulators from the PCB (about 70 regulators have been removed, require re-testing dividers) | ||
* '''Installation of the FCAL2 detector & integration to GlueX''' -- Sasha / Vlad / Hakob / Laveen | * '''Installation of the FCAL2 detector & integration to GlueX''' -- Sasha / Vlad / Hakob / Laveen | ||
+ | ** Installation and testing cables and dividers [https://logbooks.jlab.org/entry/4308819] [https://logbooks.jlab.org/entry/4308979] | ||
+ | ** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | ||
* '''Summer students''' -- Sasha | * '''Summer students''' -- Sasha | ||
+ | ** - Olivia, Ben, and Shane are on site. Expect one student from Wuhan (have to start with the paperwork) | ||
+ | ** - Projects: document all test results, assist with the cable/divider installation, install signal cables on patch panel, work on the ECAL monitoring plots | ||
* '''Beam tests with the PS''' | * '''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''' | * '''Other hardware projects''' | ||
− | *'''FCAL2 posters for open house''' | + | ** prototype of the ECAL veto counter (?) |
+ | *'''FCAL2 posters for open house'''** [[File:1-OH24-Poster-H-Laveen-revised4.pdf]] | ||
*'''Analysis/Simulation''' | *'''Analysis/Simulation''' | ||
+ | ** [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6530 Challenges in Rare-Decay Measurements ] (Liping Gan) | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Igal, Phil, Olga, Ben, Shane, Sasha, Liping, Laveen, Stjepan, Jon, Jane, Olivia, Ilya, S.T. | ||
+ | * Sasha's talk at the CALOR2024 conference was well received. | ||
+ | * All cables are in house, hope to get some help from detector support group with these | ||
+ | ** Laveen continues to label and test cables | ||
+ | * Chris S. to start working on HV distribution board design | ||
+ | * Installation of PMT dividers in ECAL continues (now have installed 16 layers) | ||
+ | ** Found and fixed 2 problems | ||
+ | * Drafts for 2 posters (one from Laveen on JEF physics and one from students on hardware) presented and feedback given | ||
+ | * Liping gave a presentation on the issues facing extraction of rare η decays | ||
+ | ** Non-rare decays can lead to large backgrounds for rare decays | ||
+ | ** For η→π0γγ need to suppress both shower overlaps and false shower splits --> use island algorithm | ||
+ | *** Showed examples of usage of island algorithm compared to our implementation | ||
+ | **** Apparent 10% inefficiency at large shower separations needs to be understood |
Latest revision as of 08:51, 3 June 2024
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
Agenda
- Preparation of parts for ECAL -- Sasha
- - HV long cable, 18 ready (out of 36), discussion with the DSG group regarding help
- - HV distribution boards: has not yet been designed, need 4 boards
- - LV cables: missing about 20 cables, waiting for the last delivery batch.
- - LV distribution boards [1]. One board out of 4 is ready, using for testing dividers Media:lv_distribution.jpg
- - LED: prototype board is ready, have to start testing
- Ongoing projects - All
- Testing of PMT dividers -- Sasha / Vlad / George / Mindy
- - File:Regulators.xlsx Map of dividers with removed regulators
- - Testing procedure [2]
- - All dividers have been fabricated and tested by George [3]
- Continue removing regulators from the PCB (about 70 regulators have been removed, require re-testing dividers)
- Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob / Laveen
- Installation and testing cables and dividers [4] [5]
- Detector installation page
- Summer students -- Sasha
- - Olivia, Ben, and Shane are on site. Expect one student from Wuhan (have to start with the paperwork)
- - Projects: document all test results, assist with the cable/divider installation, install signal cables on patch panel, work on the ECAL monitoring plots
- 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 (?)
- FCAL2 posters for open house** File:1-OH24-Poster-H-Laveen-revised4.pdf
- Analysis/Simulation
- Challenges in Rare-Decay Measurements (Liping Gan)
Minutes
Attendees: Igal, Phil, Olga, Ben, Shane, Sasha, Liping, Laveen, Stjepan, Jon, Jane, Olivia, Ilya, S.T.
- Sasha's talk at the CALOR2024 conference was well received.
- All cables are in house, hope to get some help from detector support group with these
- Laveen continues to label and test cables
- Chris S. to start working on HV distribution board design
- Installation of PMT dividers in ECAL continues (now have installed 16 layers)
- Found and fixed 2 problems
- Drafts for 2 posters (one from Laveen on JEF physics and one from students on hardware) presented and feedback given
- Liping gave a presentation on the issues facing extraction of rare η decays
- Non-rare decays can lead to large backgrounds for rare decays
- For η→π0γγ need to suppress both shower overlaps and false shower splits --> use island algorithm
- Showed examples of usage of island algorithm compared to our implementation
- Apparent 10% inefficiency at large shower separations needs to be understood
- Showed examples of usage of island algorithm compared to our implementation