Difference between revisions of "JEF meeting, March 6, 2020"
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*Mu-metal cylinders: PR submitted | *Mu-metal cylinders: PR submitted | ||
* Have 24 PMT (soft iron) housing pieces, not annealed yet. | * Have 24 PMT (soft iron) housing pieces, not annealed yet. | ||
− | *Most other pieces (except for the crystals themselves!) here ready for assembly. Plan to start with 30 from CUA. | + | *Most other pieces (except for the crystals themselves!) here ready for assembly. Plan to start with 30 crystals from CUA. |
*Summer students. | *Summer students. | ||
** PHil C. will station a student at JLab for 8 weeks in the summer | ** PHil C. will station a student at JLab for 8 weeks in the summer | ||
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** Plan to use COMCAL as TAC, also read out during regular data taking | ** Plan to use COMCAL as TAC, also read out during regular data taking | ||
*** Need gain calibration -- snake scan | *** Need gain calibration -- snake scan | ||
+ | ** Plan to do rate tests, linearity studies. | ||
* Loan agreement with UNCW is signed: Tim B. has PMT/divider | * Loan agreement with UNCW is signed: Tim B. has PMT/divider | ||
** working on a longer term plan. | ** working on a longer term plan. | ||
− |
Latest revision as of 16:43, 9 March 2020
Meeting time and location= 10:00 am EST (JLab time) Hall D counting house
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)
- Preparation for module fabrication
Minutes
Attendees: Arshak, Phil, Sasha, Igal, Zisis, Liping, Tim B., Josh
- SICCAS update: 160 crystals (60 for Hall C) are packed ready to be shipped, tentatively on Friday 3/6.
- On schedule to finish remaining 400 (of 500) in April, should receive at JLab by summer?
- Need new contract for next set of 500 crystals
- Needs DOE approval, could take awhile
- Working out an agreement between Wuhan and SICCAS folks for crystal qa.
- Specs stay the same, hopefully price per crystal will also stay the same.
- Light guide design has changed slightly: plan to go with machined 18.5 mm diameter rods
- Increases price by a factor of 2, still okay with Eugene
- Quote from Eljen is quite high, and don't have specs for material from Chinese supplier of original 18 mm diameter rods.
- Flanges on order
- Mu-metal cylinders: PR submitted
- Have 24 PMT (soft iron) housing pieces, not annealed yet.
- Most other pieces (except for the crystals themselves!) here ready for assembly. Plan to start with 30 crystals from CUA.
- Summer students.
- PHil C. will station a student at JLab for 8 weeks in the summer
- Karthik from Regina will be here for 3 weeks in March-April
- Liping recruiting students right now, 3-4 for summer?
- PMT base divider tests: 14 of 3x amplification variety already installed in COMCAL, 14 of the 6x variety awaiting 4-5 hours of downtime in the Hall
- Plan to use COMCAL as TAC, also read out during regular data taking
- Need gain calibration -- snake scan
- Plan to do rate tests, linearity studies.
- Plan to use COMCAL as TAC, also read out during regular data taking
- Loan agreement with UNCW is signed: Tim B. has PMT/divider
- working on a longer term plan.