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2023/05/08 (Monday)

Previous Day

  • Lab in-personnel: Himangshu
Status Mixture in fridge, turbo pumping on IVC, fridge at base temperature
1250 Tower(RoX)/Tower(U28)/MC(H35)/Coldplate = —/122/33.1/141 mK, Still(P1) = 1.10 K / 0.11 mbar / 0 mW, G1/G2 = 94/96 mbar, 1K Pot(P2) = 45° / 1.60 K / 15 mbar, MB = 63%
1300 Refilled LN2 in cold trap 1
1400 fridge temp seems quite stable.

1438 Cable 2/1/3 → diverter/nothing/nothing → DCRC50(3)/DCRC55(1)/DCRCX(4)
1450 Start MIDAS. DCRCs are setup for 2-sided 0-volt readout.
1500 Turned on DCRC3 which connects Cable 2(SQUET ZC-70+diverter) and the DAQ programs.
1533 Turned on Pulse Viewer. Can see noise traces on PB, PC and PD on DCRC3. We haven't set the SQUIDS or QET biases at this time. This agree with the fact that pA is not functional in this run. Fridge temperature change from 34 to 36 mK during this check
1548 Turned on DCRC1 which connects Cable 1(SQUET ZC-39) and the DAQ programs.
1550 Turned on Pulse Viewer. Can see noise traces on PA and PB on DCRC1. We haven't set the SQUIDS or QET biases at this time. This agrees with the fact that pC and pD will be non-functional in this run.
1552 Turned on DCRC4 which connects Cable 3(SQUET ZC-13) and the DAQ programs.
1555 Turned on Pulse Viewer. Donot see any response at this time.
1610 Connected all DCRCs, but DCRC4 still not responding. There is an increase in fridge temperature from 34 mK to 36 mK and has not settled yet

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