Author/Authors :
Vrancken، نويسنده , , M. and Durodié، نويسنده , , F. and Bamber، نويسنده , , R. and Dalton، نويسنده , , N. and Dumortier، نويسنده , , P. and Graham، نويسنده , , M. and Horvat، نويسنده , , A. and Hancock، نويسنده , , Gerard D. and Lockley، نويسنده , , D. and Louche، نويسنده , , F. and Maggiora، نويسنده , , R. and Messiaen، نويسنده , , A. and Milanesio، نويسنده , , D. and Nightingale، نويسنده , , M.P.S. and Shannon، نويسنده , , M. and Tigwell، نويسنده , , P. and Van Schoor، نويسنده , , M. and Wilson، نويسنده , , D. and Winkler، نويسنده , , K. and Team، نويسنده , , Cycle، نويسنده ,
Abstract :
The ITER Ion Cyclotron Range of Frequencies (ICRF) antennaʹs capacity to couple power to plasma is determined by the plasma Scrape-Off Layer (SOL) profile, shaping of the front strap array, layout of the Port Plug (PP) and detailed design of its RF components. The first two factors are taken into account by the Torino Polytechnic Ion Cyclotron Antenna (TOPICA) calculated strap array Scattering/Impedance 24-port (S24 × 24−/Z24 × 24−) matrices, while this paper deals with the optimisation of the PP layout and components. The RF modeling techniques are explained and used to maximise the coupled power under a set of constraints on RF quantities inside the PP. The total PP RF surface conductive and volumetric dielectric losses are calculated. The resulting S-parameters at the rear RF PP flanges are evaluated as input for the design of the pre-match, decoupling and matching network outside the PP. A discussion of the effect of errors on the PP excitation on the coupled power is also included.
Keywords :
Plasma heating , ICRF , Antenna , ITER
