Difference between revisions of "JEF meeting, December 4, 2020"
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* Data analysis | * Data analysis | ||
* Simulations | * Simulations | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Igal, Sasha, Jared, Bill B., Jane, Phil, Liping, Tim B., Tim W., S.T. | ||
+ | * Initial QA of 2nd batch of SICCAS crystals complete | ||
+ | ** Sasha cleared procurement | ||
+ | ** Week of 12/7: transmission measurements of 10-20 crystals; will compare measurements with SICCAS/Jane's results | ||
+ | * 3rd batch under construction, shipping schedule not clear | ||
+ | ** Need to order 500 more -- not this fiscal year? | ||
+ | *Consensus was to give up on NSF MRI grant for crystal insert -- maybe smaller grants for insert work? | ||
+ | ** Liping: supplemental funds for summer'21 work? | ||
+ | ** Phil offered to help out with summer'21 work as well | ||
+ | * Construction of a small number of new modules more or less ready to go (Sasha wants to do a few by hand to firm up procedure before Christmas) | ||
+ | *PMT active base design almost complete (?) | ||
+ | ** Vlad P. modified design to increase voltage on first dynodes + reduce voltage on last dynode -> reduced gain | ||
+ | ** Also modified to reduce anode current (needs to be < 1 mA) | ||
+ | ** Sasha compared amplitudes and anode currents for [https://halldweb.jlab.org/detectors/fcal2/dividers/design_meeting/divider_test.pdf various configurations] (with/without 3x external amplifier, old/new design) | ||
+ | ** Shape of signal from LED pulse differs between base with [https://halldweb.jlab.org/detectors/fcal2/dividers/design_meeting/tek00025.png bypassed amplifier] and one with [https://halldweb.jlab.org/detectors/fcal2/dividers/design_meeting/tek00022.png 3x amp] | ||
+ | *** Measure integral/peak to assess | ||
+ | ** PCB board design complete (modulo resistor values) | ||
+ | *** Order to be placed in January, 3 weeks delivery time estimate | ||
+ | ** Plan is to implement new bases in COMCAL, use as prototype for insert | ||
+ | * Jared is preparing a report on his signal PDF studies for the dark scalar search | ||
+ | *Simulation/reconstruction | ||
+ | ** S.T. slow progress working on implement island algorithm for FCAL-II | ||
+ | ** Discussion regarding adding detectors in front of FCAL/CCAL to use as charged particle vetoes | ||
+ | ** Discussion of using CCAL clusters in GlueX reconstruction/simulation | ||
+ | *** Geometry needs to be updated (beam pipe) | ||
+ | *** Some data with CCAL was taken during the most recent run -- caused issues with particle combinations for event reconstruction: resolved? | ||
+ | *** |
Revision as of 10:50, 7 December 2020
Meeting time and location= 9:00 am EST (JLab time) Bluejeans only
Connection instructions
We are using BlueJeans Video/Audio conferencing. Our meeting ID number is 992533564. Click "Expand" for more details.
- Make sure you have created a BlueJeans account via your JLab CUE account using this link:
- http://jlab.bluejeans.com (You should only need to do this once)
- If connecting via Web Browser: click this link (no passcode is needed):
- If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"
- Dial: 1 888 240 2560 (US or Canada only)
- or, List of International Numbers
- If connecting via Polycom unit:
- Dial 199.48.152.152 or bjn.vc
- Enter meeting ID above
Agenda
- SICCAS crystals
- Preparation for module fabrication
- COMCAL tests, TAC running, etc.
- Data analysis
- Simulations
Minutes
Attendees: Igal, Sasha, Jared, Bill B., Jane, Phil, Liping, Tim B., Tim W., S.T.
- Initial QA of 2nd batch of SICCAS crystals complete
- Sasha cleared procurement
- Week of 12/7: transmission measurements of 10-20 crystals; will compare measurements with SICCAS/Jane's results
- 3rd batch under construction, shipping schedule not clear
- Need to order 500 more -- not this fiscal year?
- Consensus was to give up on NSF MRI grant for crystal insert -- maybe smaller grants for insert work?
- Liping: supplemental funds for summer'21 work?
- Phil offered to help out with summer'21 work as well
- Construction of a small number of new modules more or less ready to go (Sasha wants to do a few by hand to firm up procedure before Christmas)
- PMT active base design almost complete (?)
- Vlad P. modified design to increase voltage on first dynodes + reduce voltage on last dynode -> reduced gain
- Also modified to reduce anode current (needs to be < 1 mA)
- Sasha compared amplitudes and anode currents for various configurations (with/without 3x external amplifier, old/new design)
- Shape of signal from LED pulse differs between base with bypassed amplifier and one with 3x amp
- Measure integral/peak to assess
- PCB board design complete (modulo resistor values)
- Order to be placed in January, 3 weeks delivery time estimate
- Plan is to implement new bases in COMCAL, use as prototype for insert
- Jared is preparing a report on his signal PDF studies for the dark scalar search
- Simulation/reconstruction
- S.T. slow progress working on implement island algorithm for FCAL-II
- Discussion regarding adding detectors in front of FCAL/CCAL to use as charged particle vetoes
- Discussion of using CCAL clusters in GlueX reconstruction/simulation
- Geometry needs to be updated (beam pipe)
- Some data with CCAL was taken during the most recent run -- caused issues with particle combinations for event reconstruction: resolved?