Difference between revisions of "JEF meeting, February 16, 2024"
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*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] | ||
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** - ePASS submitted and approved | ** - ePASS submitted and approved | ||
** - George from the DSG continued testing dividers | ** - George from the DSG continued testing dividers | ||
− | ** - Have tested 637 + | + | ** - 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 )? | ** - 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 | ||
** 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] | ** 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 | ** 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] | + | ** 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) | ** 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] | ** [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:
- 9:30 am EST (JLab time) remote only
- Connection information
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 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)
- - Radiation tests of the PMT active base [5]
- Finished tests, working on the tech note
- - Inventory database and GUI for installed electronics
- - Summer Students (2023)
- Testing of PMT dividers -- Sasha / Vlad / George
- Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad
- Analysis/Simulation
- Rough draft of Feb. collaboration talk -- Simon
- 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