2016/08/21 (Sunday)

Previous Day

	Setup: iZIP mode, DIB1/2/3 → 3.2 MHz filters → cables → DCRC55(1)/33(2)/50(3), Tower has been cooled below Al transition with mu-metal shield in standard position
	DCRCs powered overnight. Pumping on IVC with turbo pump overnight. Yesterday's data reveals that the timing link was not working, apparently caused by the test data taken on Friday.
1230	Tower/MC/Coldplate = 38.7/37.1(?)/151 mK, Still = 1.26 K / 80 μbar, G1/G2 = 195/180 mbar, 1K Pot = 1.52 K / 4.0 mbar, MB = 38.2%. Boiloff rate: good
1235	Fill LN2 cold trap.
1235	Set up timing link via telnet
1240	Start short test data series at 0/0 V with DIB2 FETs off with FG=5/2/5, OG=8/3/8, with 0 initial randoms, 0 ending randoms. Trigger on DIB1 phA with threshold of 30ADC bins, with 150 us pileup cut window.
1245	Unfortunately data still shows no timing link. No plan to take data until tomorrow so we'll try to fix it then.
1245	Close V6 to begin warmup procedure. Close turbo pump valve to monitor IVC pressure.
1250	IVC = 7.4 nbar. Close 13b, turn off 3He pump, turn on MC heater to 1mW.
1258	Begin LHe transfer @ 37.3%
1312	Tower jumps 1.1 → 3.3 K. G1 reached 30 mbar minimum then began rising.
1325	Tower = 3.50K. IVC pressure = 250nbar. Begin turbopumping IVC. Turn off MC Heater to let tower start cooling.
1335	Lower mu-metal shield 48.4 cm below standard position. Tower = 3.37 K
1335	G1 peaks at 160 nbar, then falls, Tower temperature also falling
1350	1K Pot has been falling, now 1.44 K / 4.0 mbar, and smooth. Might need to tweak it. But G1 and Tower are falling, so I'll wait.
1407	End LHe transfer (91.5%).
1410	Tower flattish at 2.17K. G1 flattish at 65 mbar. 1K Pot seems to be back to normal after finishing transfer. Turn on He3 pump, open V13B. G1/G2 stabilize at 100/105 mbar.
1415	Release pressure from main bath.
1415	Open V6 to 13.3%, G2 begins to rise.
1429	Still (P1) reaches readable levels at V6=13.7%, tower temperature at 1.44 K and G1/G2 = 320/290 mbar.
1437	Release pressure from main bath.
1440	Still (P1) reaches 1 mbar, G1/G2 = 320/290 mbar, tower temperature at 930 mK, and V6=15.0%. Open V6 fully. G1/G2 rise to 332/302 mbar, but then settle.Still reaches 0.2 mbar quickly and settles.
1450	Tower temperature at 265 mK and dropping, G1/G2 = 318/289 mbar, Still at 0.17 mbar, and 1K pot at 1.52 K/6.0 mbar and stable (oscillating on temperature plot). Leaving to go to gym while temperature continues to drop. Will return to start 12 hour bake.
1552	Back in lab. Tower temperature has reached 41.6 mK, and is still dropping. G1/G2 = 198/181 mbar, Still = 95 ubar, and 1K Pot at 1.53 K/5.5 mbar and stable/oscillating. Raise Mu metal shield.
	Tower has been cooled below Al transition with mu-metal shield 48.4 cm below standard position.
	Fill LN2 cold trap full.
1600	Starting 12 hour (43200 second) overnight bake. During bake tower temperature reached ~390 mK.

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