November 23, 2020 DIRC
From GlueXWiki
Meeting Information
GlueX DIRC Meeting
Monday November 23, 2020
1:00 pm, EDT
Remote only
Connection Using Bluejeans
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Agenda
- Announcements
- South OB mirror box removal and evaluation (Bill, All)
- After removal found most of less reflective areas are air pockets under glass. Putting pressure on the front glass, can see water move under surface. Conclusion: only one mirror maintained it's water-tight seal, others contain mostly water between surfaces
- Keith is preparing to remove the mirror from the strong back for the bottom mirror (check if any easier to remove will less tape than original mirrors from MIT)
- Followup testing of existing mirror box
- So far no leakage observed with food dye for submerged mirror (florescent dye ordered)
- Setting up reflectivity tests for mirrors from South OB for quantitative comparison to reference mirror (Bill)
- Mirror prototype test plan following last meeting's discussion (All)
- Most items for prototypes on order, plan to assemble after Thanksgiving
- Other thoughts or suggestions?
- DIRC commissioning analyses and 2020 studies (All)
- Spring 2020 data production status (Justin)
- 4 of 8 batches will completed shortly, planning analysis launch including kaon channels: K+K-π+π-, K+K-π0, K+Ksπ-, K-Ksπ+, others?
- Geometric reconstruction update (Ahmed/Roman)
- Update on shift of the time difference
- FastDIRC update (Yunjie)
- Spring 2020 data production status (Justin)
- Follow-up on additional action items from workfest (All)
- 100M event MC samples required for ρ and φ data/MC comparisons:
- /volatile/halld/home/gxproj7/RunPeriod-2019-11/dircsim-2019_11-ver02/analysis/hd_root_gen_2pi_pass00.root
- /volatile/halld/home/gxproj7/RunPeriod-2019-11/dircsim-2019_11-ver02/analysis/hd_root_gen_2k_pass00.root
- 100M event MC samples required for ρ and φ data/MC comparisons:
- AOB