2018/03/17 (Saturday)
| Status: Warming to RT. Big leak at a low IVC seal at 77K. Several cryocleanings done, mixture exposed to cold LN2 Trap 2 overnight (no mixture in fridge). N2 gas in cryostat vacuum jacket. 1K Pot evacuated and isolated. | |
| 0635 | MC(Cernox) = 272.2 K |
| 0835 | MC(Cernox) = 275.1 K |
| warming time constant is fairly steady around 15 hours | |
| 1010 | MC(Cernox) = 276.9 K |
| 1210 | MC(Cernox) = 279.2 K |
| 1550 | MC (Cernox) = 281.2 K |
| 1600 | Fill LN2 cold trap bath full. |
| 1609 | Plug in and open valve at scroll pump. Open valve to cryostat vacuum jacket. Pressure begins to fall. |
| 1624 | When pressure read 6.2E-2 mbar, open valve to turbo pump. |
| 1626 | Close valve to scroll pump and unplug. Pressure reads 2.2E-3 mbar. |
