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QT System

  1. Check the purity of the outside gHe tanks, and regenerate/refill (max. pressure 145 psig)
  2. Clean up Dewars and the level-sensor tubes.
  3. Confirm all transfer lines' vacuum jackets are pumped down to 1 x 10^(-3) Torr in Pressure and < 1 x 10^-9 mbarL/s leak-rate.
  4. Leak-check all QT-system piping.
  5. Regenerate the purifier.
  6. Check F1, F2, F3 filters, oil filter, and oil level on HR3 and perform maintenance if required based on the scheduled maintenance.
  7. Check and confirm LCW supply to the cold-head compressors.
  8. Check the cold-head compressor pressure gauges and confirm 100 psi (IN) ~300 psi (OUT) (i.e. ~200 psi difference on both gauges in each compressor).
    If not, pressurize the cold-head compressors using the HA.

Connecting Piping


Magnet

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