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Manual

To manually do a warm up:
  1. Close V1 and open V4. This will redirect the mixture into the dumps.
  2. Turn off the forepump and compressor.
  3. Turn off the turbo, and wait for it to spin down. This can be done faster by leaking about 50mbar of mixture from the dumps through V9.
  4. Wait for the turbo to spin down to $ \sim200$ Hz.
  5. Turn the forepump and compressor back on.
  6. Turn the heaters on full blast, and turn the pulse tube cooler off.
  7. Pulse V6 open and closed until you can leave V6 open without overwhelming the forepump.
  8. Once P1 reads $ \sim$ 700 mbar, open V7 and V8.
  9. At this point, V1, V2, V3 & V9 should be closed. V4, V5, V6, V6 & V8 should be open. The compressor and forepump should be on. P1 should be $ \sim$ 730 mbar.
  10. Turn on the turbo for $ \sim$ 1-2 hours to collect the last of the mixture.
  11. Close V4. Close V14. Close all valves. Turn off all pumps.
  12. Record P1 in the log book.
  13. Wait for MCCernox to read $ \sim300K$ .


next up previous contents
Next: Speeding Up The Warm Up: Collecting the Mixture and Previous: Automatic   Contents
Jonathan Ouellet 2014-08-26