Coupling of ion bernstein waves to tokamak plasmas by waveguide antennas

摘要

A computational model has been developed that allows calculation of the radiofre- quency(RF)power reflected by grill waveguide antennas, employed for additional heating of tokamak plasma. The plasma surface impedance is evaluated using a full wave analysis with the SEMAL code (Sauter, O., Vaclavik, J., Comput. Phys. Commun. 84(1994)226), which solves the integrodifferential equations for the electric field of the wave in configuration space, in an inhomogeneous plasma, for any cyclotron harmonic and without any approximation with respect to the Larmor radius.