Tokamak Start-Up with Electron-Cyclotron Heating
D. J. Holly, S. C. Prager, D. A. Shepard, and J.
University of Wisconsin, Madison,
Wisconsin 53706, United States of America
(Manuscript received 16 March 1981; Final manuscript received 8
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
cyclotron resonance heating power for pre-ionization. The solution of
zero-dimensional start-up equations indicates that the effect is due to
the high initial density which increases the rate at which the
increases in the neutral-dominated initial plasma. The effect
favourably to larger tokamaks. A 50% reduction in the start-up
requirement and impurity reflux is also observed.
Ref: D. J. Holly, S. C. Prager, D. A. Shepard, and J.
C. Sprott, Nuclear Fusion 21, 1483-1487 (1981)
The complete paper is available in PDF
Return to Sprott's Books and Publications.