Difference between revisions of "JEF meeting, October 30, 2020"
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=Agenda= | =Agenda= | ||
* SICCAS crystals | * SICCAS crystals | ||
+ | ::[https://logbooks.jlab.org/entry/3855241 Transmission measurement, batch 1] | ||
* [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. | ||
* Data analysis | * Data analysis | ||
* Simulations | * Simulations | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Varun, Jon, Zisis, Sasha, Phil, Liping, Tim B., Jared. | ||
+ | * Sasha was able to use Carl Zorn's lab to do transmittance measurements of 5 crystals | ||
+ | ** The crystal with the worst transmission profile happens to be the one that is most brown | ||
+ | ** Compare to Shanghai measurements? | ||
+ | ** Question: optical restoration test? Maybe use UV light or bake in an oven? Not tried yet. | ||
+ | * We received 165 new SICCAS crystals, QA has already started | ||
+ | ** Crystals arrived in boxes of 20 -- maybe too many per box? Concern from Sasha about damage, but first 2 sets of crystals seem fine. | ||
+ | ** First 40 crystals mostly look good -- more or less within spec for dimensions except thicker in the middle relative to the ends by about 30-40 microns | ||
+ | ** Two suspicious crystals in first box. | ||
+ | * Temperature control for brazing being developed; finalizing setup | ||
+ | * Problem with 2 dividers that did not work during beam test traced to socket | ||
+ | ** Work is proceeding to finalize design. Plan for Zisis to participate in PMT divider effort. | ||
+ | * Igal generated millions of simulated events for JEF studies: [https://mailman.jlab.org/pipermail/jef/2020-October/000533.html Mailing list message] |
Latest revision as of 14:45, 2 November 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: Varun, Jon, Zisis, Sasha, Phil, Liping, Tim B., Jared.
- Sasha was able to use Carl Zorn's lab to do transmittance measurements of 5 crystals
- The crystal with the worst transmission profile happens to be the one that is most brown
- Compare to Shanghai measurements?
- Question: optical restoration test? Maybe use UV light or bake in an oven? Not tried yet.
- We received 165 new SICCAS crystals, QA has already started
- Crystals arrived in boxes of 20 -- maybe too many per box? Concern from Sasha about damage, but first 2 sets of crystals seem fine.
- First 40 crystals mostly look good -- more or less within spec for dimensions except thicker in the middle relative to the ends by about 30-40 microns
- Two suspicious crystals in first box.
- Temperature control for brazing being developed; finalizing setup
- Problem with 2 dividers that did not work during beam test traced to socket
- Work is proceeding to finalize design. Plan for Zisis to participate in PMT divider effort.
- Igal generated millions of simulated events for JEF studies: Mailing list message