Difference between revisions of "JEF meeting, April 19, 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] | ||
− | |||
− | |||
*'''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 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 440 - 150 = 290 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 | ||
+ | ** - 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) | ||
+ | ** - 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] | ||
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / George / Mindy | * '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / George / Mindy | ||
− | * '''Other hardware projects''' | + | ** - Testing procedure [https://halldweb.jlab.org/detectors/fcal2/dividers/divider_test_guide.pptx] |
+ | ** - 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 [https://halldweb.jlab.org/wiki/index.php/Final_test_of_dividers]. | ||
+ | ** - 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 | ||
+ | ** <span style="color: red"> Installation of the LMS has been completed </span> [https://logbooks.jlab.org/entry/4282307] | ||
+ | ** Cable and divider installation [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_19_2024/cable3.jpg] [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_19_2024/cable2.jpg][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_19_2024/cable1.jpg] | ||
+ | *** Install cable bundles on vertical chains | ||
+ | *** Sort out dividers, set up jumpers (amplifier/by-pass) and install them. | ||
+ | ** Bundles with optical fibers for the trigger have been installed (Chris, Armen, Mark). Need to install 2 patch panels [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_12_2024/optical_trigger.jpg] | ||
+ | ** Receive optical network fibers. Will install them as well as the network switch during next week [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_12_2024/network_bundle.jpg] | ||
+ | ** <s> 7 VXS controllers can be booted now [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/04_12_2024/daq.jpg] </s> | ||
+ | ** [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]) | ||
+ | ** '''Other hardware projects''' | ||
+ | *** --prototype of the ECAL veto counter | ||
+ | *** --study shower profile using PS (also transition region between lead tungstate and LG modules (?) ) | ||
*'''Analysis/Simulation''' | *'''Analysis/Simulation''' | ||
+ | ** [https://halldweb.jlab.org/wiki/images/7/7c/Glue-jefxd-igal-jaegle-19042024.pdf Updates] --ig | ||
+ | *'''FCAL2 poster for open house?''' | ||
+ | ** JEF/ECAL/FCAL poster | ||
+ | ** exhibit stand (modules, PMTs, etc.) | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Sasha, Bill, Laveen, Zisis, Igal, Liping, Malte, Stjepan, Vlad, Jane, Hakob, S.T. | ||
+ | * Received 3 boxes of LV cables -- still need 290 cables | ||
+ | * LMS installation | ||
+ | ** All fibers connected to ECAL modules | ||
+ | ** Light injection to integrating sphere using LEDs | ||
+ | *** PCB housing LEDs to be glued to flange | ||
+ | *** Currently 5 blue LEDs, thinking about other colors (red?) | ||
+ | *** CAEN 1495 to be used to drive electronics, need to check pulse heights | ||
+ | ** Two reference PMTs | ||
+ | * PMT dividers | ||
+ | ** ePAS in place for installation | ||
+ | ** 180 regulators removed, need to be retested | ||
+ | ** Plan to make light tight and test using oscilloscope after each 1-2 rows installed | ||
+ | * Work continues connecting optical fibers for readout/trigger electronics | ||
+ | * Low level software development continues (TTAB, geometry,...) | ||
+ | * Igal gave update on η→π0γγ studies using spring 2017 data set | ||
+ | ** 4 photons in FCAL, with and without recoil proton | ||
+ | ** Choose combination with best χ^2 | ||
+ | ** Sees evidence for η'→ωγ -- can use as reference channel | ||
+ | ** No evidence for signal channel | ||
+ | ** Huge 2π0 + significant 2γ backgrounds |
Latest revision as of 10:02, 22 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 440 - 150 = 290 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
- Testing of PMT dividers -- Sasha / Vlad / George / Mindy
- - Testing procedure [6]
- - 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 [7].
- - 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 [8]
- Cable and divider installation [9] [10][11]
- Install cable bundles on vertical chains
- Sort out dividers, set up jumpers (amplifier/by-pass) and install them.
- Bundles with optical fibers for the trigger have been installed (Chris, Armen, Mark). Need to install 2 patch panels [12]
- Receive optical network fibers. Will install them as well as the network switch during next week [13]
-
7 VXS controllers can be booted now [14] - 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 (?) )
- Analysis/Simulation
- Updates --ig
- FCAL2 poster for open house?
- JEF/ECAL/FCAL poster
- exhibit stand (modules, PMTs, etc.)
Minutes
Attendees: Sasha, Bill, Laveen, Zisis, Igal, Liping, Malte, Stjepan, Vlad, Jane, Hakob, S.T.
- Received 3 boxes of LV cables -- still need 290 cables
- LMS installation
- All fibers connected to ECAL modules
- Light injection to integrating sphere using LEDs
- PCB housing LEDs to be glued to flange
- Currently 5 blue LEDs, thinking about other colors (red?)
- CAEN 1495 to be used to drive electronics, need to check pulse heights
- Two reference PMTs
- PMT dividers
- ePAS in place for installation
- 180 regulators removed, need to be retested
- Plan to make light tight and test using oscilloscope after each 1-2 rows installed
- Work continues connecting optical fibers for readout/trigger electronics
- Low level software development continues (TTAB, geometry,...)
- Igal gave update on η→π0γγ studies using spring 2017 data set
- 4 photons in FCAL, with and without recoil proton
- Choose combination with best χ^2
- Sees evidence for η'→ωγ -- can use as reference channel
- No evidence for signal channel
- Huge 2π0 + significant 2γ backgrounds