| 0045 | Interrupt cryocleaning. Pump mixture into dump in preparation for condensation. |
| | IVC pressure 1E-6 mbar. Mixing chamber temperature 11.7 K and falling slowly. Mixing chamber temperature was rising for a couple of hours, before starting to fall again over the last hour. I don't think this is indicative of a leak. It may be begin affected by the temperature of the 1 K pot. Isolate IVC and start 1 K pot. |
| | Fill N2 cold trap full. |
| 0105 | Temperature of 1 K pot has settled at 1.81 K. Dump pressure 660 mbar: a little low and a little worrying; shall attempt to investigate later. |
| | Open gate valve and condenser line speedivalve. Commence manual condensation procedure through nitrogen cold trap 1. |
| 0130 | Mixture left in dump 310 mbar (351 mbar dump pressure in fridge). Valve V12A fully open. Manual condensation procedure complete. Mixing chamber temperature 10.5 K and falling. |
| 0150 | Mixing chamber temperature 9.4 K and falling. It's a little warm, but commence manual circulation procedure to see if rate of descent can be increased. |
| 0305 | Valve V6 fully open. Manual circulation procedure complete. Mixing chamber temperature 400 mK and falling. Wait for mixing chamber to reach base temperature. |
| 0610 | Finally reached a base temperature of 69.5 mK. |
| 0700 | Playing around with the 1 K pot needle valve has led to a relatively stable 1 K pot temperature between 1.64 K & 1.65 K. Mixing chamber temperature is 65.4 mK. |
| 1121 | Fill N2 cold trap full. |