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2017/07/25 (Tuesday)

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Setup: DIB 1/3/4 → 3.2 MHz filters 1/2/3 → cable 1/2/3 → gender changer 1/3/4 → DCRC55(1)/33(2)/X(4)
0850 Tower/MC/Coldplate = 25.8/29.7/175 mK, Still = 1.2-1.5 K / 0.060 mbar, G1/G2 = 166/154 mbar, 1K Pot = 1.70 K / 32 mbar. MB = 69.2% (predicted level: 72.5%)
0850 Lab = 23.3 C, Humidity = 42%
0855 Fill LN2 cold trap bath.

After analyzing IbIs, chose QET biases appropriate to +2/-2 V bias, and calculated dP/dI prefactors:

0/0 V 2/-2 V
DIB chan Side chan QET bias Prefactor QET bias Prefactor
DCRC1pA Side1pD 50.5 0.486 50.5 0.483
DCRC1pC Side1pE 58 0.474 57.5 0.496
DCRC2pB Side2pC -73 0.513 -74 0.493
DCRC2pD Side1pC -54.5 0.445 -55 0.469
DCRC4pA Side2pE 62 0.476 62 0.524
DCRC4pB Side2pF 68.2 0.474 67.8 0.491
DCRC4pC Side2pD 62 0.472 61.5 0.508
DCRC4pD Side1pB 65 0.484 65.8 0.498
1209 Set Bias = +2/-2 V, set appropriate QET biases from table.
1212 Set 15 ADC trigger on DCRC4pB (Side2pF). DCRC1,2 events are not at trigger time. Seems like timing link isn't working.
Restarting DCRC programs fixed timing issue.
1223 Use flash and take tool to Start sequence of 2 60-minute data series of Side2/1 = 2/-2 V data with Frontend Gain = (15/2)/(4/4)/(5/5/5/5), OG = 4/2/4, QET biases = 2V settings in table above, with 1000 beginning randoms, 30 sec flash with 30 min wait, and a 15ADC bin threshold trigger on DCRC4pB (Side2pF).
Time Event Tower Temp [mK]
1222 Flash 270
1232 Cooling 31.8
1253 Start series 26.3
1353 End series 25.8
1354 Flash 290
1404 Cooling 30.5
1424 Start series 26.4
1524 End series 25.7
1634 Use flash and take tool to Start sequence of 9 60-minute data series of Side2/1 = 2/-2 V data with Frontend Gain = (15/2)/(4/4)/(5/5/5/5), OG = 4/2/4, QET biases = 2V settings in table above, with 1000 beginning randoms, 30 sec flash with 30 min wait, and a 15ADC bin threshold trigger on DCRC4pB (Side2pF).
1635 Fill LN2 cold trap full.

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