December 19, 2017 DIRC

Meeting Information

GlueX DIRC Meeting
Tuesday December 19, 2017
1:00 pm, EDT
JLab room A110

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Agenda

1. Announcements
2. Support structure update (John, Tim, Tom)
   • 90 degree roll fixture
3. Bar box transportation
   • Planning for final 3 bar boxes
     • Monitoring System (John and Yunjie)
     • Gas system (John)
     • Temporary storage for bar boxes in the hall Design (inverted) SLAC structure
     • Dates to discuss with SLAC?
4. Optical box
   • Design drawings and PMT mounting update (Ernie and Jason)
     • Questions to drawing package: STEP file
       • The 1/4 and 3/4 npt holes on the bottom and top plates are for the water system, correct?
       • The 1/2 npt is for some water level meter?
       • Since there are no features for water on the side plates, I assume the FOB will be completely full with water and will exit through the top fitting in the 3/4 npt hole?
       • If the box is completely full, no nitrogen purge is needed?
       • The weld callout for the 1/8 inch plate to the frame calls for a 25mm fillet (see attached). Is this true?
       • What is the fillet weld size on the inside of frame (opposite the seam weld)?
   • Presentation on assembly sequence in January?
   • Simulation studies (Maria and Roman)
     • Several signal channels: h(2600) eta'(2300) Y(2175) phi(1850) Xi(1820)
5. AOB