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 | + | ** - 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 ( | + | ** - 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] |
− | + | ** - [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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** Submitted ePAS for testing installed dividers | ** Submitted ePAS for testing installed dividers | ||
** <span style="color: red"> Installation of the LMS has been completed </span> [https://logbooks.jlab.org/entry/4282307] | ** <span style="color: red"> Installation of the LMS has been completed </span> [https://logbooks.jlab.org/entry/4282307] | ||
− | ** Cable and divider installation [https:// | + | ** Cable and divider installation [https://logbooks.jlab.org/entry/4288219] |
*** Install cable bundles on vertical chains | *** Install cable bundles on vertical chains | ||
− | *** Sort out dividers, set up jumpers (amplifier/by-pass) | + | *** 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) [https://logbooks.jlab.org/entry/4288385] [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_12_2024/optical_trigger.jpg] |
− | + | ** Ethernet switch installed [https://logbooks.jlab.org/entry/4287964] | |
− | ** | + | ** 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 (?) ) | ||
− | |||
− | |||
*'''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 | ||
+ | |||
+ | =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:
- 9:30 am EST (JLab time) remote only
- Connection information
- 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
- ECAL to be treated like other detectors: inclusion in energy sum
- 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