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2020/12/23 (Wednesday)

Previous Day

  • Lab in-person: Matt
  • Virtual partner: Pramod
Status Run 74 prep. 1K Pot pumped out and isolated. Fridge and 4He and LN2 Trap 1 isolated, not pumped out. Cryostat vacuum jacket pumped out. IVC open, tower removed.
1010 Matt enters lab
One source mover motor coil had most of its inner end break off yesterday, so need to rewind it.
1015 Continue to unwind coil.
1055 Finish unwinding coil
1105 To start rewinding, first wind 9 rotations of wire around the 1/2-inch diameter winding shaft. That's 35.9 cm of the inner end free.
1110 Tape wire down into spool to start winding. Use drill to finish winding.
1125 Tape top end of wire onto spool. Unwind the 35.9 cm of inner end from the shaft, then wind that onto spool and tape it down.
1140 Scrape insulation off a few cm of the bottom end.
1145 Measure resistance of coil: 7.42 kΩ
1150 Matt leaves lab

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