Difference between revisions of "JEF meeting, November 6, 2020"
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=Agenda= | =Agenda= | ||
* SICCAS crystals | * SICCAS crystals | ||
+ | ::-[https://halldweb.jlab.org/wiki/index.php/Second_Batch_(160_crystals) Visual inspection and dimensions] | ||
* [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: Igal,Sasha,Zisis,Jane,Liping,Tim B.,Jon,Jared,Susan,S.T. | ||
+ | * Sasha has been filling in a spreadsheet detailing the QA for each of the new batch of SICCAS crystals | ||
+ | ** Generally quality has improved over first batch, although there are still several discolored crystals | ||
+ | ** Packing: 20 crystals per box, bundles of 4 -- maybe not as safe as could be? (found 1 crystal with cracked face, will accept as spare) | ||
+ | ** Crystals systematically wider in middle relative to ends by about 30-40 microns | ||
+ | ** Some crystals are blurred, some contain bubbles, plan to make transmittance measurements and compare with company's measurements | ||
+ | ** Will provide feedback to Chinese company | ||
+ | ** Plan to continue QA the week of 11/9/20 -> clear procurement invoice | ||
+ | * Next batch starting in next few months? Try to establish more collaborative approach with company? | ||
+ | * Module construction setup ready: new temperature control for brazing | ||
+ | * Mu-metal shields should be ready and delivered to TEDF week of 11/9/20 | ||
+ | * Still working on details of getting Zizis's group involved with PMT divider work | ||
+ | * PCB layout for dividers finalized (exact details of resistors can be changed easily) | ||
+ | ** Goal for divider design is end of November, order in December | ||
+ | * S.T. has been working on a generator for π0π0 background for η→π0γγ | ||
+ | * S.T. working on implementing island algorithm for FCAL reconstruction | ||
+ | ** Zisis's student is working on machine learning | ||
+ | *Igal looking at studying multi-photon channels with and without π0 mass constraints: how to combine trees? |
Latest revision as of 09:18, 9 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: Igal,Sasha,Zisis,Jane,Liping,Tim B.,Jon,Jared,Susan,S.T.
- Sasha has been filling in a spreadsheet detailing the QA for each of the new batch of SICCAS crystals
- Generally quality has improved over first batch, although there are still several discolored crystals
- Packing: 20 crystals per box, bundles of 4 -- maybe not as safe as could be? (found 1 crystal with cracked face, will accept as spare)
- Crystals systematically wider in middle relative to ends by about 30-40 microns
- Some crystals are blurred, some contain bubbles, plan to make transmittance measurements and compare with company's measurements
- Will provide feedback to Chinese company
- Plan to continue QA the week of 11/9/20 -> clear procurement invoice
- Next batch starting in next few months? Try to establish more collaborative approach with company?
- Module construction setup ready: new temperature control for brazing
- Mu-metal shields should be ready and delivered to TEDF week of 11/9/20
- Still working on details of getting Zizis's group involved with PMT divider work
- PCB layout for dividers finalized (exact details of resistors can be changed easily)
- Goal for divider design is end of November, order in December
- S.T. has been working on a generator for π0π0 background for η→π0γγ
- S.T. working on implementing island algorithm for FCAL reconstruction
- Zisis's student is working on machine learning
- Igal looking at studying multi-photon channels with and without π0 mass constraints: how to combine trees?