| | Status: Opened IVC yesterday to look for touch from cold stage to 4K. Pumping out IVC overnight. Cryostat vacuum jacket was pumped out for a few hours |
| 0900 | Turbo on IVC = 16 nbar, IVC = 340 nbar with pump valved out |
| 0945 | Leak detector on IVC = 55 pbarL/s. Squirt-tests at IVC seal, no leak seen. At KF-flange on stripline elbow, 55→80 pbarL/s. Around knurled elbow flange, 60→90 pbarL/s. |
| 1320 | Raise main bath. |
| 1330 | Turbo on IVC = 16 nbar. IVC = 300 nbar with turbo valved out for a few minutes |
| 1345 | Pump out fridge lines with scroll pump |
| 1345 | Leak detector on IVC = 44 pbarL/s |
| 1350 | Let mixture from 3He pump through cold LN2 Trap 1 into fridge lines, both sides. (Most mixture still in dump.)
Leak signal does not change. |
| 1350 | Pump out 1K Pot with scroll pump. (Pumped it out earlier, had 26 mbar in it) |
| 1355 | Pump out main bath with scroll pump to <1 mbar |
| 1405 | Pressurize main bath with helium to 320 mbar above 1atm on G3. Do not let He into 1K Pot like last time. No increase in IVC leak. |
| 1405 | Let 5.4 mbar He exchange gas into IVC |
| 1410 | MC(Cernox) = 296.8 K, Sorb = >249 K (max), IVC = 5.4 mbar, G1 (fridge) = 213 mbar, Old Level resistor = 0.985 kΩ, New level resistor = 2.142 kΩ |
| 1415 | Begin LN2 transfer |
| 1420 | MC(Cernox) = 296.2 K, IVC = 5.4 mbar, G1 (fridge) = 212 mbar, Old Level resistor = 1.058 kΩ, New level resistor = 2.162 kΩ |
| 1425 | MC(Cernox) = 292.8 K, IVC = 4.6 mbar, G1 (fridge) = 211 mbar, Old Level resistor = 1.086 kΩ, New level resistor = 2.187 kΩ |
| 1430 | MC(Cernox) = 286.2 K, IVC = 4.6 mbar, G1 (fridge) = 211 mbar, Old Level resistor = 1.109 kΩ, New level resistor = 2.205 kΩ |
| 1442 | MC(Cernox) = 268.9 K, IVC = 4.0 mbar, G1 (fridge) = 209 mbar, Old Level resistor = 1.154 kΩ, New level resistor = 2.300 kΩ |
| 1455 | MC(Cernox) = 243.1 K, IVC = ?? mbar, G1 (fridge) = 208 mbar, Old Level resistor = 1.240 kΩ, New level resistor = 2.858 kΩ |
| 1500 | MC(Cernox) = 229.5 K, IVC = 2.5 mbar, G1 (fridge) = 207 mbar, Old Level resistor = 1.262 kΩ, New level resistor = 2.885 kΩ |
| 1506 | MC(Cernox) = 213.7 K, IVC = 2.5 mbar, G1 (fridge) = 207 mbar, Old Level resistor = 1.288 kΩ, New level resistor = 2.915 kΩ |
| 1516 | MC(Cernox) = 191.4 K, IVC = 2.2 mbar, G1 (fridge) = 206 mbar, Old Level resistor = 1.310 kΩ, New level resistor = 2.958 kΩ |
| 1526 | MC(Cernox)/Sorb = 173.4/214.4 K, IVC = 2.2 mbar, G1 (fridge) = 205 mbar, Old Level resistor = 1.322 kΩ, New level resistor = 2.989 kΩ |
| 1533 | MC(Cernox)/Sorb = 163.3/194.4 K, IVC = 2.2 mbar, G1 (fridge) = 204 mbar, Old Level resistor = 1.327 kΩ, New level resistor = 3.000 kΩ |
| 1541 | MC(Cernox)/Sorb = 153.4/175.4 K, IVC = 2.2 mbar, G1 (fridge) = 204 mbar, Old Level resistor = 1.330 kΩ, New level resistor = 3.009 kΩ |
| 1549 | MC(Cernox)/Sorb = 145.0/160.1 K, IVC = 1.9 mbar, G1 (fridge) = 203 mbar, Old Level resistor = 1.334 kΩ, New level resistor = 3.015 kΩ |
| 1557 | MC(Cernox)/Sorb = 137.3/147.9 K, IVC = 1.9 mbar, G1 (fridge) = 202 mbar, Old Level resistor = 1.334 kΩ, New level resistor = 3.020 kΩ |
| 1608 | MC(Cernox)/Sorb = 128.1/136.6 K, IVC = 1.9 mbar, G1 (fridge) = 202 mbar, Old Level resistor = 1.336 kΩ, New level resistor = 3.021 kΩ |
| 1615 | MC(Cernox)/Sorb = 124.0/132.9 K, IVC = 1.9 mbar, G1 (fridge) = 202 mbar, Old Level resistor = 1.336 kΩ, New level resistor = 3.021 kΩ |
| 1615 | End LN2 transfer. |