Difference between revisions of "JEF meeting, August 28, 2020"
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=Agenda= | =Agenda= | ||
* SICCAS crystals | * SICCAS crystals | ||
| + | ::: [https://logbooks.jlab.org/entry/3834544 Test results of PWO crystals (test 3)] | ||
* [https://halldweb.jlab.org/wiki/index.php/Module_Design Preparation for module fabrication] | * [https://halldweb.jlab.org/wiki/index.php/Module_Design Preparation for module fabrication] | ||
* COMCAL tests, TAC running, etc. | * COMCAL tests, TAC running, etc. | ||
| Line 27: | Line 28: | ||
* GlueX/JEF PAC presentation | * GlueX/JEF PAC presentation | ||
* DocDB and Wiki: house keeping | * DocDB and Wiki: house keeping | ||
| + | |||
| + | =Minutes= | ||
| + | Attendees: Arshak, Igal, Jane, Zisis, Jon, Susan, Sasha, Liping, Tim B., Josh, Bill B., S.T. | ||
| + | * Sasha has done [https://logbooks.jlab.org/entry/3834544 measurements] on another set of "good" crystals | ||
| + | ** Looked at relative amplitudes (using unchanged crystal in one slot) and resolutions | ||
| + | ** Amplitudes and resolutions roughly agree with other measurements, except for "brown" crystals, with some spread, showing limit of measurement technique | ||
| + | ** Suspicion that beam of leptons in PS arm is not perfectly centered on crystals | ||
| + | ** Consistency of optical coupling? Maybe use air gap instead? | ||
| + | * Sasha and Vlad went down to the hall to install another set of crystals to study | ||
| + | ** Plan to install Crytur crystal some time in the near future, plan to use these as the reference for SICCAS crystal measurements | ||
| + | * Chris S. is working constructing 2 new dividers with modified design (new PCB) to increase voltages on first dynode, but try to keep overall spec consistent with Hamamatsu divider spec | ||
| + | ** Plan to install in COMCAL | ||
| + | * Next few weeks plan is to construct new crystal modules | ||
| + | * Jared/Igal are working on a signal PDF for dark matter signals, plan to use toy MC to test | ||
| + | * Sasha will contribute FCAL-2/COMCAL slides, Liping to contribute physics slides for Jeopardy/PAC presentation-- goal: draft for next weeks' meeting. | ||
| + | * Liping submitted JEF LOI for SnowMass2021 | ||
| + | * Zisis has been working on reorganizing JEF wiki pages and added JEF-related topics to docDB. | ||
Latest revision as of 14:54, 28 August 2020
Meeting time and location= 9:30 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.
- Simulations
- GlueX/JEF PAC presentation
- DocDB and Wiki: house keeping
Minutes
Attendees: Arshak, Igal, Jane, Zisis, Jon, Susan, Sasha, Liping, Tim B., Josh, Bill B., S.T.
- Sasha has done measurements on another set of "good" crystals
- Looked at relative amplitudes (using unchanged crystal in one slot) and resolutions
- Amplitudes and resolutions roughly agree with other measurements, except for "brown" crystals, with some spread, showing limit of measurement technique
- Suspicion that beam of leptons in PS arm is not perfectly centered on crystals
- Consistency of optical coupling? Maybe use air gap instead?
- Sasha and Vlad went down to the hall to install another set of crystals to study
- Plan to install Crytur crystal some time in the near future, plan to use these as the reference for SICCAS crystal measurements
- Chris S. is working constructing 2 new dividers with modified design (new PCB) to increase voltages on first dynode, but try to keep overall spec consistent with Hamamatsu divider spec
- Plan to install in COMCAL
- Next few weeks plan is to construct new crystal modules
- Jared/Igal are working on a signal PDF for dark matter signals, plan to use toy MC to test
- Sasha will contribute FCAL-2/COMCAL slides, Liping to contribute physics slides for Jeopardy/PAC presentation-- goal: draft for next weeks' meeting.
- Liping submitted JEF LOI for SnowMass2021
- Zisis has been working on reorganizing JEF wiki pages and added JEF-related topics to docDB.
