文档介绍：Development of the ICRF Antenna for the Next Step
Fusion Reactor ITER
Pietro Testoni
Dipartimento di Ingegneria Elettrica ed Elettronica, Università di Cagliari
Piazza d’Armi, 09123 Cagliari
io Sonato
Dipartimento di Ingegneria Elettrica, Università di Padova
Abstract
The effort of many engineers and scientists is to demonstrate the feasibility of heating the plasma in the
Next Step fusion reactor by means of RF waves. At this purpose new antenna prototypes have been
developing for the JET and TORE SOUPRA fusion machines. The finite element code ANSYS has been
used to perform several analyses because it takes into account different physical aspects of the same
problem, allowing coupled analyses.
ic transient and harmonic analyses have permitted to determine the induced and high
frequency currents.
Eddy currents, which are due to disruption events, cause electro-dynamic loads on the antenna because they
interact with the static ic ponents. A mechanical analysis has been performed pute
stress, displacements values and resultant forces and moments in all parts of the structure.

High frequency ic analyses have allowed to optimise all the high frequency circuit
components puting the electric and ic field distributions and the scattering parameters. The
thermal loads due to the high frequency currents have been transferred in thermal models and the
temperature puted.
Introduction
In order to investigate the fusion physics and technology considerable research has been carried out in
Europe and worldwide, including the construction of many specialized machines designed to investigate
particular aspects of fusion. In Europe this research culminated in 1983 with the construction of the JET
(Joint European Torus) tokamak, built within the EURATOM (European Atomic munity)
program. Recently plasmas of more than 3 minutes duration were obtained in the superconducting tokamak
TORE SUPRA, which started operation in 198