Difference between revisions of "Module fabrication"

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::: -Measure light yield using radioactive source:  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.
 
::: -Measure light yield using PS setup:  12 modules in the PS setup.
 +
  
 
* PMT checking
 
* PMT checking
 
::: -Diameter check  
 
::: -Diameter check  
 +
  
 
* Check PMT divider
 
* Check PMT divider
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::  - Set time: 1 day, full cure time: 4 - 5 days  
 
::  - Set time: 1 day, full cure time: 4 - 5 days  
 
::  - Time: 3 - 4 hours to load the fixture
 
::  - Time: 3 - 4 hours to load the fixture
 +
 +
 +
* Check fabricated modules using cosmic ray setup (TBD)
  
  

Revision as of 13:25, 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)