CsI Water Damage Repair: - Remove CsI crystals **(56 out of 56)** (11/15) * Dismantle telescopes * Store E, dE detectors * Unwrap CsI bundles - Remove as much filter paper as possible from CsI (using ethanol and plastic scraper) **(56 out of 56)** (11/20) - Document damage (depth on front surface) **(56 out of 56)** - Detach photodiodes from each crystal (leave light guides on for now) **(56 out of 56)** (12/19) - Remove remaining filter paper and light guide paint **(56 out of 56)** (12/19) - MAchine crystals at WashU **(56 out of 56)** (1/18) * Driven down/back - Sand sides of each crystal **(56 out of 56)** (3/14) - Design and assemble lapping setup (4/14) * Setup machined with some problems * Lapping machine doesn't fit (FIXED) * Fast sliders wobbly * Sandpaper (delivered) (11/18) * Order stoppers (04/25) * Spacer (04/28) - Clean photodiodes, reattach to light guides - Reglue uncoupled light guides - more RTV615 needed - Practice lapping with worst crystals (4/21) - First practice with plastic crystal (04/29) - Lap crystals until surface clean (4/28) - Polish, rewrap, assemble bundles (5/14) - Test individual crystals in dark box (check leakage current) - Reassemble telescopes (??)