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2023/05/09 (Tuesday)

Previous Day

  • Lab in-personnel: Himangshu, Ping, Zach
Status Mixture in fridge, turbo pumping on IVC, Fridge at base temperature
Cable 2/1/3 → diverter/nothing/nothing → DCRC50(3)/DCRC55(1)/DCRCX(4)
1454 Tower(RoX)/Tower(U28)/MC(H35)/Coldplate = –/122/39/183 mK, Still(P1) = 1.48 K / 0.14 mbar / 0 mW, G1/G2 = 92/91 mbar, 1K Pot(P2) = 45° / 1.60 K / 15 mbar, MB = 22%
1517 Tried DCRC4 but it is still not responsing. So, I am connecting Cable 3 (instead of Cable 1) to DCRC1 to see the phonon channels in the SQUET.
1524 pA and pD showing traces but not pB. Zapping the DCRC to see if that helps.
1546 Unplugged the Cable and checked at the BOB, all three channels, SQUIDS and Feedback coil showing similar resistances. Plug it back to DCRC1 and all three are showing noise traces now
1548 Refilled LN2 at the cold trap 1
1541 LHe transfer started
1620 After swapping the two DCRCS and Cables, all phonon channels are showing traces, except the non-functional ones. So, we will keep this configuration for this run
Decided Configuration: Cable 2/3/1 → diverter/nothing/nothing → DCRC50(3)/DCRC55(1)/DCRCX(4)
1630 Setup for 2-sided readout. Will do IbIs in this mode.
1641 Zap all SQUIDS

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