Difference between revisions of "July 23, 2019 DIRC"

Revision as of 09:51, 23 July 2019

GlueX DIRC Meeting
Tuesday July 23, 2019
1:00 pm, EDT
JLab F326

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Announcements
Installation work:
- Mirror studies:
  - Mirrors in OB determined to be UV-enhanced first surface mirrors which are different from those used in test sample studies
    - Implications for reflectivity vs wavelength, long term tests under water, etc. (All)
  - Strongback disassembly and mirror reflectivity measurements (Bill)
  - Tests of composition from oxidized surfaces (Eugene/Bill)
- Epoxy test samples to prevent corrosion of exposed aluminum surfaces (Tim, Bill, All)
  - [Results from UV enhanced mirror in water sample with DP190
- Next steps:
  - Receive remaining UV enhanced mirror from Bates and have cut for additional sample pieces (Wednesday 7/24)
  - Decide on epoxy for pin holes of Upper (North) OB. Apply epoxy and re-install mirror box in OB for installation. After receiving gold-plated screws, install in upper bar boxes and proceed with installing North OB
  - Replace mirrors on Lower (South) mirror box, re-anodize strong back and reapply new mirrors. Need to choose the same UV-enhanced or other first surface mirrors from previous tests.
    - Tests of separating test mirrors from aluminum piece already underway
Spring 2019 DIRC Commissioning Analysis (All)
- Commissioning LUT analyses (All)
  - Cherenkov ring fit (Roman)
- Contributions to Jerry's DIRC review article (Yunjie, All)
Software/simulations
- FastDIRC geometry implementation and alignment work (Cris/Yunjie)
Software overview and tasks (All)
AOB

@@ Line 20: / Line 20: @@
 #* Mirror studies:
 #** Mirrors in OB determined to be UV-enhanced first surface mirrors which are different from those used in test sample studies
-#*** Implications for reflectivity vs wavelength, long term tests under water, etc. (All)
+#*** [https://halldweb.jlab.org/wiki/images/e/ed/Reflectivity.pdf Implications for reflectivity vs wavelength, long term tests under water, etc.] (All)
 #** [https://logbooks.jlab.org/entry/3706827 Strongback disassembly and mirror reflectivity measurements] (Bill)
 #** Tests of composition from oxidized surfaces (Eugene/Bill)