Effectiveness of adiabatic heating combining minor radius compression and major radius compression of a toroidal plasma

Abstract

Temperature gains due to three types of adiabatic toroidal compression are compared on the assumption of the fixed chamber dimension and the maximum toroidal field on the chamber axis. A combined adiabatic heating scheme may be more advantageous in obtaining a high-temperature plasma than minor or major radius compressions depending on the plasma loss mechanism. A combined adiabatic compression scheme is more favourable than a major radius compression scheme when the final plasma dimensions are the same, for all plasma loss scalings considered here.