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2013/10/02

1040 Cryocleaning ceased circulation. Open V6 more to restart cryocleaning. Wait an hour.
Filled LN2 coldtrap full.
1300 Begin LHe transfer (10.4%).
1310 Begin pumping mixture to dump.
1400 End LHe transfer at 91.2%
1436 Isolated the dump with G2=681 mbar, G1= 0 mbar, P1= 0.013 mbar, and mixing chamber temperature at 11.9 K. Start the 1 K Pot.
1550 In preparation for condensing the mixture, filled LN2 cold trap full. Condensing mixture started with mixing chamber temperature at 11.1 K, and G2=682 mbar. We wish to use 400 mbar of mixture this time, and thus we want 282 mbar of mixture to remain in the dump.
1630 Closed V9 with 282 mbar in the dump.
1645 Opened V12 all the way. Mixing chamber temperature at 7 K and dropping.
1855 Mixing chamber temperature 2.1 K. Start manual circulation procedure.
2335 Reduce 1 K pot temperature to 1.6 K. Mixing chamber temperature at 56.4 mK.
Fill N2 cold trap full.