2020/02/12 (Wednesday)
| 0900 | Start cryocleaning mixture through LN2 Cold Trap 1, V6 = 12.5% |
|---|---|
| 0905 | Increase V6 → 12.7% to restart flow |
| 0910 | Increase V6 → 12.8% to restart flow |
| 0915 | Increase V6 → 12.9% to restart flow |
| 0935 | Increase V6 → 13.0% to restart flow |
| 0950 | Increase V6 → 13.1% to speed up flow |
| 1000 | Stop cleaning through Trap 1 after 60 min. G2 flow pressure was 570-855 mbar. Pump mixture to dump. Removed 5.3 mbar. |
| 1020 | Start cryocleaning mixture through LN2 Cold Trap 2, V6 = 13.0% |
| 1045 | Increase V6 → 13.1% to speed up flow |
| 1120 | Stop cleaning through Trap 2 after 60 min. G2 flow pressure was 580-700 mbar. Pump mixture to dump. Removed 2.4 mbar. |
| 1140 | Check contents of warm LN2 Trap 1: 5.3 mbar. Pump out with scroll pump. |
| 1200 | Start cryocleaning mixture through LN2 Cold Trap 1, V6 = 13.0% |
| V6 is open too much, G2 hits 980 mbar. Close V6 and V14, start over… | |
| 1205 | Start cryocleaning mixture through LN2 Cold Trap 1, V6 = 12.5% |
| 1215 | Increase V6 → 13.0% to restart flow |
| again, V6 is open too much, G2 hits 980 mbar. Annoying. Close V6 and V14, start over… | |
| 1215 | Restart cryocleaning, V6 = 12.6% |
| 1225 | Increase V6 → 13.0% to restart flow |
| 1305 | Stop cleaning through Trap 1 after 60 min. G2 flow pressure was 570-785 mbar. Pump mixture to dump. Removed 5.4 mbar. |
| 1540 | Check contents of warm LN2 Trap 1: 5.4 mbar. Pump out with scroll pump. |
| 1545 | Check contents of warm LN2 Trap 2: 2.4 mbar. Pump out with scroll pump. |