Difference between revisions of "JEF meeting, July 12, 2024"
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** Installation of long signal cables [https://logbooks.jlab.org/entry/4312300] | ** Installation of long signal cables [https://logbooks.jlab.org/entry/4312300] | ||
** Connecting signal cables to patch panels [https://logbooks.jlab.org/entry/4311931] | ** Connecting signal cables to patch panels [https://logbooks.jlab.org/entry/4311931] | ||
− | ** Installing LV patch panels and cables [https://logbooks.jlab.org/entry/ | + | ** Installing LV patch panels and cables [https://logbooks.jlab.org/entry/4312301] |
** Installation of optical fibers [https://logbooks.jlab.org/entry/4311499] | ** Installation of optical fibers [https://logbooks.jlab.org/entry/4311499] | ||
** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | ** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | ||
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*''' Abstracts for the DNP meeting''' [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/07_05_2024/Abstract-DNP-2024-4.pdf][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/07_05_2024/poster_abstract.docx] | *''' Abstracts for the DNP meeting''' [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/07_05_2024/Abstract-DNP-2024-4.pdf][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/07_05_2024/poster_abstract.docx] | ||
*'''Analysis/Simulation''' | *'''Analysis/Simulation''' | ||
+ | ** Update on the eta->pi+pi-e+e- channel studies [https://halldweb.jlab.org/DocDB/0065/006567/001/JEF%20Meeting%20July%2012th.pdf] -- Stjepan | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Bill, Sasha, Phil, Stjepan, Laveen, Shane, Ben, Jon, Zisis, Susan, Vlad, Olga, Igal, S.T. | ||
+ | * 4 LV distribution boards have been prepared, need to be populated with connectors | ||
+ | * Some LMS fibers need to be fixed | ||
+ | * Cabling continues -- almost complete on bottom half, start to work on upper half week of 7/15/24 | ||
+ | * Vlad suggested we should get scaler readout working soon -- DAQ not ready to go yet | ||
+ | * Stjepan presented MC studies of η→e+e-π+π- signal and background | ||
+ | ** Added E(FCAL) to tree to study E/p for lepton/pion separation -- seems to work reasonably well | ||
+ | ** Look at asymmetry of distribution of angle φ between π+π- and e+e- planes | ||
+ | *** Expect A=0 because no asymmetry is introduced in thrown MC | ||
+ | *** Measured A~0, some small asymmetry appears to be introduced by detector acceptance | ||
+ | ** Largest background from bggen is from π+π-π0 with conversion of one γ or Dalitz decay from π0 |
Latest revision as of 11:28, 15 July 2024
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
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
- Report from students [4]
- Installation and testing cables and dividers [5]
- Installation of signal patch panels [6][7]
- Installation of long signal cables [8]
- Connecting signal cables to patch panels [9]
- Installing LV patch panels and cables [10]
- Installation of optical fibers [11]
- 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
- Abstracts for the DNP meeting [12][13]
- Analysis/Simulation
- Update on the eta->pi+pi-e+e- channel studies [14] -- Stjepan
Minutes
Attendees: Bill, Sasha, Phil, Stjepan, Laveen, Shane, Ben, Jon, Zisis, Susan, Vlad, Olga, Igal, S.T.
- 4 LV distribution boards have been prepared, need to be populated with connectors
- Some LMS fibers need to be fixed
- Cabling continues -- almost complete on bottom half, start to work on upper half week of 7/15/24
- Vlad suggested we should get scaler readout working soon -- DAQ not ready to go yet
- Stjepan presented MC studies of η→e+e-π+π- signal and background
- Added E(FCAL) to tree to study E/p for lepton/pion separation -- seems to work reasonably well
- Look at asymmetry of distribution of angle φ between π+π- and e+e- planes
- Expect A=0 because no asymmetry is introduced in thrown MC
- Measured A~0, some small asymmetry appears to be introduced by detector acceptance
- Largest background from bggen is from π+π-π0 with conversion of one γ or Dalitz decay from π0