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2016/03/16 (Wednesday)

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Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50
Took some Ba series overnight
1000 Fill LN2 cold trap full.
1004 Remove Ba source from fridge

Demounting G101B from its 2-dib housing and preparing to mount USD1 into the housing. Pictures and details

1425 Commence warm up procedure. Close V13B, open V9 to begin pumping mixture to dump. Open V5 to pump from both sides of the fridge. Close 1K pot Needle Valve to stop helium from entering 1K Pot. Close 1K Pot speedivalve once the 1K Pot temperature has stabilized (empty pot).
1430 Close V4A to isolate 1K Pot Pump (He4 Rotary Pump). Close He4 pump He Recovery valve and switch Yellow valve on He4 Pump exhaust from Recovery to Exhaust. Close manual valve on He4 pump inlet. Turn off He4 pump. Turn on Mixing Chamber heater gradually to 20mW.
1440 Pressure in P1 rose to ~9mbar, then began decreasing as more mixture collected in the dump. Currently P1: .22mbar, G1: ~2mbar, G2: 356mbar and climbing gradually.
1521 MC Temperature 2.126K, Cold Plate: 460mK , Still: 1.594K, P1: 0.20mbar, G2: 609mbar (still rising). Barometric pressure today: 29.61 inHg.
1633 Tower Temperature: 10.8K, MC Temp: 10.8K, P1: 16ubar, G2: 808mbar. Stop pumping to dump and isolate fridge lines by closing Condenser Line Speedivalve and Gate Valve. Turn off Mixing Chamber Heater. Close V1 and V6. Still pumping on Cold Trap 2 through V5.
1637 Fill LN2 cold trap full.
1647 Still: 12.3K. Close V12B and V5 to stop pumping from Cold Trap 2. G2 shows 806.4mbar of mixture in Dump. Close V9 and turn off He3 pump.
1649 Tower temperature at 10.6K.

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