Difference between revisions of "JEF meeting, January 31, 2020"
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* Status of the crystal production (SICCAS) | * Status of the crystal production (SICCAS) | ||
* Status of PMT/other procurement | * Status of PMT/other procurement | ||
| + | * [https://logbooks.jlab.org/entry/3774276 Check PMT diameter] | ||
| + | * [https://logbooks.jlab.org/entry/3771638 Runs to study PMT anode current] | ||
* [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] | ||
| + | |||
| + | =Minutes= | ||
| + | Attendees: Josh, Phi, Tim B., Tim W., Mark S., Jane, Zisis, Sasha, Arshak, S.T. | ||
| + | * Clean space in TEDF ready to go pending OSP | ||
| + | * 2nd Light Yield setup ready to go pending network setup | ||
| + | * SICCAS crystals: 160 ready for shipment, delay due to extended Chinese New Year holiday (and possibly coronavirus issues) | ||
| + | * 150 Hamamatsu PMTs with correct base have arrived at the lab -- 20% have larger diameter than our criterion | ||
| + | * Base redesign test using 3 COMCAL channels: read out raw waveforms, Sasha still analyzing, but looks like will need to reduce gain from 24x to 2-3x. | ||
| + | ** Head dissipation of 1 W/ PMT will need to be taken into account when designing cooling system. | ||
| + | *Light monitoring system: will use plexiglas scheme a la FCAL | ||
| + | ** Multiple light sources with integrating sphere | ||
| + | ** Tests with full-scale plexiglas: summer project? | ||
| + | * CMU: tooling for production of PMT housing (soft iron) | ||
| + | * Light guide dimensions need to be finalized: do we go with larger diameter, which needs machining and increases cost? Out for quotes. | ||
| + | * Brass straps: identified new vendor | ||
| + | ** Plans for stress test well underway (setup ready to go, temperature control worked out with Nick S.) | ||
| + | * Flanges: need 20-50 by mid March, only have 3 | ||
Latest revision as of 10:49, 3 February 2020
Meeting time and location= 10:00 am EST (JLab time) HallD conference room
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
- Status of the crystal production (SICCAS)
- Status of PMT/other procurement
- Check PMT diameter
- Runs to study PMT anode current
- Preparation for module fabrication
Minutes
Attendees: Josh, Phi, Tim B., Tim W., Mark S., Jane, Zisis, Sasha, Arshak, S.T.
- Clean space in TEDF ready to go pending OSP
- 2nd Light Yield setup ready to go pending network setup
- SICCAS crystals: 160 ready for shipment, delay due to extended Chinese New Year holiday (and possibly coronavirus issues)
- 150 Hamamatsu PMTs with correct base have arrived at the lab -- 20% have larger diameter than our criterion
- Base redesign test using 3 COMCAL channels: read out raw waveforms, Sasha still analyzing, but looks like will need to reduce gain from 24x to 2-3x.
- Head dissipation of 1 W/ PMT will need to be taken into account when designing cooling system.
- Light monitoring system: will use plexiglas scheme a la FCAL
- Multiple light sources with integrating sphere
- Tests with full-scale plexiglas: summer project?
- CMU: tooling for production of PMT housing (soft iron)
- Light guide dimensions need to be finalized: do we go with larger diameter, which needs machining and increases cost? Out for quotes.
- Brass straps: identified new vendor
- Plans for stress test well underway (setup ready to go, temperature control worked out with Nick S.)
- Flanges: need 20-50 by mid March, only have 3
