Possibility of Achieving Ignition in a High-Field Ohmically Heated Tokamak

Abstract

There exists a regime in parameter space where a small high-field Ohmically heated tokamak may be capable of reaching thermonuclear ignition. Results of numerical simulations of the minimum ignition conditions are presented, including empirical, sawtooth, and magnetic-field ripple diffusion and the effects of impurities. An ignition condition is derived and compared with the results of the numerical simulations.