Module fabrication

• 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

• 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

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

- 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 mnin per module

(~5 modules a day, 100 modules a month)