Difference between revisions of "JEF meeting, November 17, 2023"
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*** - Installing fibers; will start gluing soon [https://halldweb.jlab.org/detectors/fcal2/lms/fibers_sphere1.jpg][https://halldweb.jlab.org/detectors/fcal2/lms/fibers_sphere2.jpg] | *** - Installing fibers; will start gluing soon [https://halldweb.jlab.org/detectors/fcal2/lms/fibers_sphere1.jpg][https://halldweb.jlab.org/detectors/fcal2/lms/fibers_sphere2.jpg] | ||
*** - The LMS should be ready for the installation on the detector during next week. | *** - The LMS should be ready for the installation on the detector during next week. | ||
+ | ** - Install labels on the detector [https://halldweb.jlab.org/detectors/fcal2/lms/detector_label.jpg] | ||
** - Installation of the trigger and readout electronics | ** - Installation of the trigger and readout electronics | ||
*** - 7 VXS crate, 3 HV crates, and 1 LV (Wiener) crate have been installed. Power lines will be installed in a week. | *** - 7 VXS crate, 3 HV crates, and 1 LV (Wiener) crate have been installed. Power lines will be installed in a week. | ||
*** - Installed flash ADC, SDs, TIs. Uploaded new firmware [https://logbooks.jlab.org/entry/4208145] | *** - Installed flash ADC, SDs, TIs. Uploaded new firmware [https://logbooks.jlab.org/entry/4208145] | ||
*** - All readout controllers have been installed [https://logbooks.jlab.org/entry/4217259] | *** - All readout controllers have been installed [https://logbooks.jlab.org/entry/4217259] | ||
− | *** - | + | *** - Radiation tests of the PMT active base [https://halldweb.jlab.org/wiki/index.php/Active_Base_Radiation_Tests] |
** - [https://halldweb.jlab.org/detectors/fcal2/installation/students_2023/list_of_students_2023.xlsx Summer Students (2023) ] | ** - [https://halldweb.jlab.org/detectors/fcal2/installation/students_2023/list_of_students_2023.xlsx Summer Students (2023) ] | ||
* '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / Aoran / Boaxin | * '''[[Testing of PMT dividers]]''' -- Sasha / Vlad / Aoran / Boaxin | ||
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** All optical fibers are ready for installation, the mounting plate to the integrating sphere is under production, will be ready soon. | ** All optical fibers are ready for installation, the mounting plate to the integrating sphere is under production, will be ready soon. | ||
*'''Analysis/Simulation''' | *'''Analysis/Simulation''' | ||
+ | ** Added new JEF simulation page to [https://halldweb.jlab.org/wiki/index.php/JEF_Simulations wiki] | ||
+ | ** [https://halldweb.jlab.org/wiki/images/e/ef/Rate_studies.pdf Rate simulation studies] | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Sasha, Bill, Liping, Olga, Axel, Stjepa, Igal, Arshak, Phil, S.T. | ||
+ | * All long signal cables are here, 3 new bundles ready to go | ||
+ | * Short HV cables arriving slowly | ||
+ | * LV cable status unclear -- potential bottleneck? | ||
+ | * Production of LV distriubtino boards will happen soon | ||
+ | * All parts are available for construcing 3x3/5x5 module arrays | ||
+ | * 3D-printed parts for LMS are available, LMS ready for installation within a week | ||
+ | ** Arshak recommends not using UV-curing glue | ||
+ | * PMT divider tests continue, found 4-5 suspicious dividers | ||
+ | * Testing radiation hardness of PMT base components with Cs source | ||
+ | ** 22.3 kRad total dose (to be compared to Sasha's estimate of 5 kRad/year at FCAL face) | ||
+ | ** Saw failure of DC regulator chip, as observed by NPS | ||
+ | *** Regulator probably not needed, bypassed -> signal pulse restored | ||
+ | * FCAL dark room being restored, canbus daisy chain almost done | ||
+ | * Simon showed some preliminary rate estimates for FCAL-2 insert and potential inner-TOF veto at 900 nA |
Latest revision as of 09:29, 20 November 2023
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
- Preparation of parts for ECAL -- Sasha
- - signal cables: all cables are ready. Received all needed long cables. Need to test redo 4 bundles (48 cables have been tested)
- - signal patch panels are ready [1]
- - HV cables: have received 50 short cables, have been testes and labeled. 440 cables are ready for installation. 36 long cables are in production
- - HV distribution boards: Chris is finalizing design of the distribution board, should order 4 boards soon.
- - LV cables: ordered, lead time unclear
- - LV distribution boards. The design of the LV distribution board has been finalized (discussion with Fernando, the power regulators will not be added to the design)
- - Optical fibers: received all
- Ongoing projects -- Sasha, all
- - Testing and labeling cables (Recently labeled cables in boxes)[2]
- - Prepare modules for the TAC and prototypes (using crystals with some imperfections) [3]
- Wrapped crystals - done
- Parts for TAC[4] - done
- Modules for prototype (25 are ready) - done
- - Preparation of the LMS [5]
- - 3-D print and machine mounting plate (coupling to the integrating sphere]
- - 3-D print support structure for gluing fibers to the mounting plate [Boby]
- - Machined Al plate for fiber polishing
- - Installing fibers; will start gluing soon [6][7]
- - The LMS should be ready for the installation on the detector during next week.
- - Install labels on the detector [8]
- - Installation of the trigger and readout electronics
- - Summer Students (2023)
- Testing of PMT dividers -- Sasha / Vlad / Aoran / Boaxin
- Installation of the FCAL2 detector & integration to GlueX -- Sasha / Vlad / Hakob
- Light monitoring system
- All optical fibers are ready for installation, the mounting plate to the integrating sphere is under production, will be ready soon.
- Analysis/Simulation
- Added new JEF simulation page to wiki
- Rate simulation studies
Minutes
Attendees: Sasha, Bill, Liping, Olga, Axel, Stjepa, Igal, Arshak, Phil, S.T.
- All long signal cables are here, 3 new bundles ready to go
- Short HV cables arriving slowly
- LV cable status unclear -- potential bottleneck?
- Production of LV distriubtino boards will happen soon
- All parts are available for construcing 3x3/5x5 module arrays
- 3D-printed parts for LMS are available, LMS ready for installation within a week
- Arshak recommends not using UV-curing glue
- PMT divider tests continue, found 4-5 suspicious dividers
- Testing radiation hardness of PMT base components with Cs source
- 22.3 kRad total dose (to be compared to Sasha's estimate of 5 kRad/year at FCAL face)
- Saw failure of DC regulator chip, as observed by NPS
- Regulator probably not needed, bypassed -> signal pulse restored
- FCAL dark room being restored, canbus daisy chain almost done
- Simon showed some preliminary rate estimates for FCAL-2 insert and potential inner-TOF veto at 900 nA