MODE CONVERSION HEATING EXPERIMENTS ON THE TORE-SUPRA TOKAMAK

A new scenario for efficient mode conversion heating, in the ion cyclo tron range of frequency, is proposed. Experiments on the Tore Supra to kamak demonstrate that this new scheme can be as efficient as minority ion cyclotron heating. A detailed analysis of this mode conversion sc enario, using a new complete 1D model and the 3D full-wave code ALCYON , shows a dominant mode conversion fraction regardless of the antenna phasing. It identifies the new scenario to be a ''global'' resonator, containing mode conversion, coupled to the antenna.