Electromagnetic Analysis of the EAST 4-Strap ICRF Antenna with HFSS Code

摘要

A new ICRF antenna has been designed in EAST,whose aims are to reduce the parallel RF electric fields E_‖ and to investigate the current drive using the fast magnetosonic wave.This antenna consists of four toroidally spaced radiating straps.The electrical characteristics of the new antenna are estimated by using a three-dimensional electromagnetic commercial code.The S-parameters,RF current distribution and electromagnetic field distribution on and near the 4-strap antenna are analyzed,and the RF potentials influenced by antenna phasing and radial position are investigated.