25 04 2010

Last night I controlled the fusor from LabView. I put together a simplified version of Andrew Seltzman’s Marc III controller. So far I can:

  • graph the chamber pressure in realtime
  • enable/disable fuel
  • set the fuel flow in SCCM
  • see actual fuel flow rate from mass flow controller
  • enable/ disable high voltage
  • set frequency and duty cycle for high voltage

The HV duty cycle lets us do fusion trials without melting the grid.

Something I’ve noticed: when the plasma becomes unstable and sparks… it crashes the data acquisition card. I’m guessing the sparks are creating powerful EMFs. We may need shielding.

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