Difference between revisions of "Main fabrication steps"

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(Created page with "* Checking crystals ::: -Visual inspection: 5 min per crystal ::: -Dimension measurement: 10 min per crystal ::: -Transmission check: 20 min per crystal (Optional) :::...")
 
(Module Fabrication)
 
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* Brazing straps
 
* Brazing straps
::: Time per module: 20 min
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:: -Time per module: 20 min
  
 
* ESR shaping  
 
* ESR shaping  

Latest revision as of 18:53, 22 April 2021

  • 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)