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2014/01/14

1030 Fill LN2 cold trap full.
1035 Isolate IGH lines, open V12a, speedivalve for LN2 cold trap 1, V11a, V7 until G1 reads 807mbar. P1: 38ubar. Close V12a, speedivalve, V11a, V7, open V1. G1 drops to 139mbar.
1120 G1: 99mbar, P1: 4.0mbar. Pump out through V6.
1135 G1: 90mbar, P1: 0.7mbar. Open V2, V3 to aid in pumping.
1150 G1: 1.0mbar, P1: 80ubar. Close all IGH valves.
1155 Perform regular throughput test. Open V7, V11A, V12A, cold trap 1 speedivalve, V3, until G1 rises to 920mbar. Close all valves and open V1. G1 drops to 186mbar then begins rising. A flow of 40mbar/min is observed.
1200 Pump out gas and begin preparation for cooldown.
1330 Raise dewar. Pump and flush main bath. Commence pumping on fridge lines with turbopump.
1500 Commence LN2 transfer.
1700 G1: 1.5mbar, P1: 24ubar. External pressure sensor attached to He3 pump exhaust lines reads 7.4mbar.