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Instructions for reaching a static fill of gas in the IP while the DPS is running.

This guide assume the fill is being performed in a state where both the upstream and downstream Be windows have holes, and that a fixed Be window exists on the upstream side of the IP and a movable Be window on the downsstream side

Step-by-step guide

  1. Verify vacuum conditions in the IP of approximately 1e-6 Torr, and UHV in the US-DPS and DS-DPS.
  2. Start a strip tool and load the file: DPS_Gasjet_Pressures.stp
  3. Verify the oven fill line is connected to the gas bottle of the desired gas type.
  4. Open the gas bottle and set the regulator to 10 psig.
  5. Read the gas bottle pressure and ensure that there is enough gas for the intended fill.
    1. Previous measured rate of He usage at 5 Torr IP pressure = 165 psi/day (one full 2500 psi bottle drained in ~15 days)
  6. Verify gas bottle on fill line #2 is closed and that the fill valve for this line is closed.
  7. If operating the Li oven, follow the E300 procedure to prepare the Li oven for a static fill.
  8. Close angle valve VV3202 isolating the plasma beamline from the plasma turbo
  9. Close valve FV-PB on the foreline of the Picnic Basket. Turn off Picnic Basket turbo
  10. Close Beryllium window valve VV3208


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