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2022/02/22 (Tuesday)

Previous Day

  • Lab in-personnel: Shubham, Giulia, Zach
Status Run 75 finished. 1K Pot pumped dry and isolated. All mixture in dump, fridge isolated. LHe Trap and LN2 Trap 1 still have contaminants. ~1 atm exchange gas in IVC. Cryostat Vacuum Jacket pumped out. Main bath in pit, clean tent erected, IVC not yet open.
1220 MC(Cernox) = 297 K
1230 Wipe down inside of clean tent to remove dust
1240 Begin removing bottom section of IVC
1245 Plug Cable 1 into breakout box and double-check cross-channel resistances. They are about the same as the original room-temperature check. About 1800 Ohm for the two cases that are same-side channels (pC-pF on both sides) and about 2800 Ohm for resistances between opposite-side channels.
1300 Remove bottom piece of IVC.
1345 Remove 4K heat sinks
1430 Deinstall squets
1450 Remove 4k Stage
1515 Remove 100mK stage

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