Main fabrication steps
From GlueXWiki
- Checking crystals
- -Visual inspection: 5 min per crystal
- -Dimension measurement: 10 min per crystal
- -Transmission check: 20 min per crystal (Optional)
- -Measure light yield using radioactive source: 20 min per crystal (Optional)
- -Measure light yield using PS setup: 12 modules in the PS setup.
- PMT checking
- -Diameter check
- Check PMT divider
- -Time: 15 min per divider (10 weeks to check 1600 dividers)
- -University of Regina, GWU, UNCW
- Preparation of silicon cookie
- - Mix RTV625, remove bubbles
- - Pour to the gluing fixture (prepare 36 cookies can order one more fixture)
- - Set time: 1 day, full cure time: 4 - 5 days
- - Time: 3 - 4 hours to load the fixture
- Check fabricated modules using cosmic ray setup (TBD)
Module Fabrication
- Brazing straps
- -Time per module: 20 min
- ESR shaping
- - ESR cutting
- - Shape in the oven (2 tools exist, 20 min per cycle]
- - Time per module: 20 min
- Glue light guide to the PMT using UV glue
- - Time per module: 10 min
- Crystal wrapping
- - Cut ESR and Tedlar
- - Wrap module
- - Time per module: 20 min
- Module fabrication
- - Insert mu-metal shield
- - Attach PMT housing, set tension screws
- - Insert PMT with silicon cookies, set tension plate
- - Time per module: 30 min
- Total fabrication time: 1 hour 40 min per module
- (~5 modules a day, 100 modules a month)
- Total fabrication time: 1 hour 40 min per module