| 1745 | Fill N2 cold trap full. |
| | Connect He leak checker. Background leak rate very small, falls off-scale. Perhaps checker might require recalibration. It is pumping on a very small volume at the moment though. |
| 1755 | IVC pressure 5.4E-7 mbar. Isolate turbo pump and open valve to leak checker. Background He leak rate jumps to 1E-7 mbar l/s. Helium background is a little high, but this seems to indicate that the leak checker is working. |
| 1852 | No gross leak found from circulation line to IVC at 9.8K and He BG 1.6E-7cc/s. |
| 1920 | Start 1 K pot. Isolate leak checker: readings are too low as 1 K pot acts like cryopump, and hence leak checker's pump is less efficient. If mixture doesn't condense, there is a leak. |
| | Start condensing mixture. |
| 2145 | Mixture condensed a while ago, and mixing chamber temperature has plateaued at 2.2 K. |
| | Start circulation. |
| 2200 | Mixing chamber temperature has dropped below 1.2 K. In absence of tower thermometer, switch to still thermometer to get an idea of the base temperature. |