Conceptual design of a superconducting Tokamak: "TORUS II SUPRA"

Abstract

The conceptual design of TORUS II SUPRA concerns a large sized Tokamak of the next generation. It takes into account constraints coming from the envisaged superconducting toroïdal magnet, but keeps unchanged all the operational facilities and working conditions which a more conventional design, i.e. a water cooled-copper magnet, could offer. The main parameters are R <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> = 2.15 m, a = 0.75 m, B <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</inf> = 4.5 T, I = 1.7 MA. The scientific aims of the device concern the development, at a multimegawatt level, of plasma heating methods, mainly wave absorption and the contribution to high temperature (3-5 keV) Tokamak physics allowed by these methods : main emphasis is put on tentative profile control of plasma parameters during the quasi-steady state possible with a D.C. toroïdal magnetic field.