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2012/09/11

1015 Fed Cricket 3 pellets.
1040 Began pumping mixture to the dump, to avoid overloading the 1K pot. This issue is due to running out of LHe.
1055 Filled LN2 cold trap.
1130 Began LHe transfer (-1.0%).
1235 End LHe transfer (71.7%).
1450 Switched on mixing chamber heater, power 10mW, to aid extraction of mixture.
1645 Pressure in P1 is 730 mbar. Looks like we've recovered all the mixture. Turn off mixing chamber heater.
1800 Pressure in dump 732 mbar. Start condensing mixture manually through nitrogen cold trap 1.
1820 Left 390 mbar in dump. Mixing chamber temperature 7.7 K and falling. Will wait until temperature drops before starting circulation. Fully open valve V12A on IGH to conclude condensing mixture.
2135 Mixing chamber temperature 2.24 K, most of the mixture has condensed. Start automated circulation procedure.
2325 Mixing chamber has reached 109 mK and is still cooling slowly. Stop automated circulation procedure.
Start flashing detector.