2021/08/05 (Thursday)

Status	Run 74 in progress. First cooldown after IVC rebuild.
	Tower thermometer is reading high, probably this is a thermometer problem and the actual temperature is much lower. High noise in some of the charge channels.
	Setup: DIB1/2+acc → SL 41/43 → 3.2 MHz filters → cables 2/3 → nothing/Source_mover_board+HV_diverter_board → DCRC50(3)/55(1). Kepco 40V supplye → HV BNC. No lead/poly shield. Currently both DCRCs are on.
1020	Tower/MC/Coldplate = 140.05/35.3/191 mK, Still = 1.39 K / 0.075 mbar / 0 mW, G1/G2= 281.9/259.8 mbar, 1K Pot = 1.60 K / 20±1 mbar. MB = 69.3 %.
1034	Fill LN2 cold trap bath.
1044	At 10kHz noise in DCRC3qI/qO/DCRC1qI/qO = 43/4.7/4.3/131e-6. This is q3/q1/q4/q2 At 3kHz (peak) noise in DCRC3qI/qO/DCRC1qI/qO = 834/64/78/1430 e-6
1058	Start 61 min series of 0V/-9V (bias applied after 60 sec), with 1000 beginning randoms, trigger threshold 120/40/35/500 on DCRC3qI/qO/DCRC1qI/qO, 5Hz in-run randoms, with 1.6384 ms pulses (8192 length) and 400 us prepulse (500 length). Start sequence with Start button.
1200	Dial bias down to 0V and flash detector for 10 minutes

07210805_1058. Strange that at t0 the amplitude is only 40keV

	Let's try moving the source. We'll move it to -10.0 mm.
1519	Tried doing a move but the motor wires weren't plugged into the driver.
1530	Do mvNwait -4steps×152 times, 40 second wait, with dwell = 40 and power = 6.8 V. (Around 5.93 mm/hour) This sequence will take 1hour41min20sec and will move the source a total distance of 10.02 mm. Should end at 5:11 pm. Tower → 0.88/1.21/1.40 K after move 1/2/3. After move 12 Tower ~ 1.75 K, seems to be plateauing. After move 26, MC ~ 180 mK, Tower ~ 1.78 K
1713	Move sequence ends, slightly delayed.
1725	Tower/MC = 430/72 mK, cooling to base.
1817	MC = 36.2 mK, which is 1 mK above the eventual base temperature. 64 minutes after the end of the move sequence.