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CsI Water Damage Repair:

1. Remove CsI crystals (56 out of 56) (11/15)
   • Dismantle telescopes
   • Store E, dE detectors
   • Unwrap CsI bundles
2. Remove as much filter paper as possible from CsI (using ethanol and plastic scraper) (56 out of 56) (11/20)
3. Document damage (depth on front surface) (56 out of 56)
4. Detach photodiodes from each crystal (leave light guides on for now) (56 out of 56) (12/19)
5. Remove remaining filter paper and light guide paint (56 out of 56) (12/19)
6. MAchine crystals at WashU (56 out of 56) (1/18)
   • Driven down/back
7. Sand sides of each crystal (0 out of 56) (2/14)
8. Design and assemble lapping setup (design completed) (2/14)
   • Motion control + support
   • Coarse vertical motion
   • CsI holder that attaches to motion control
   • Sandpaper (delivered) (11/18)
9. Practice lapping with worst crystals (2/21)
10. Lap crystals until surface clean (2/28)
11. Polish, rewrap, assemble bundles (3/14)
12. Reassemble telescopes (3/28)