Tokamak start-up with electron-cyclotron heating

D. J. Holly, S. C. Prager, D. A. Shepard, J. C. Sprott

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Experiments are described in which the start-up voltage in a tokamak is reduced by about a factor of two by the use of a modest amount of electron cyclotron resonance heating power for pre-ionization. The solution of the zero-dimensional start-up equations indicates that the effect is due to the high initial density which increases the rate at which the conductivity increases in the neutral-dominated initial plasma. The effect extrapolates favourably to larger tokamaks. A 50% reduction in the start-up volt-second requirement and impurity reflux is also observed.

Original languageEnglish (US)
Pages (from-to)1483-1487
Number of pages5
JournalNuclear Fusion
Issue number11
StatePublished - Nov 1981

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics


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