2021/11/18 (Thursday)
- Lab in-personnel: Matt
| Status | Beginning Run 75. |
|---|---|
| 1K Pot isolated. MB raised. Cryostat vacuum jacket (CVJ) pumped out. | |
| 1110 | Check contents of warm LN2 Trap 2: 7.5 mbar. Pump out with Scroll Pump. |
| 1140 | Start cryocleaning mixture through LN2 Cold Trap 1, V6 = 12.4% |
| 1150 | Increase V6 → 12.5% to restart flow |
| 1200 | Increase V6 → 12.6% to restart flow |
| 1255 | Increase V6 → 12.7% to restart flow |
| 1305 | Increase V6 → 12.8% to speed up flow |
| 1355 | Stop cleaning through Trap 1 after 135 min. G2 flow pressure was 570-660 mbar. Pump mixture to dump. Removed 5.4 mbar. |