The ITER ICRF antenna’s coupled power to plasma is determined not only by the plasma scrape-off layer profiles and shaping of the front strap array, but also by assuring optimal excitation of the array by the overall layout of the feed network and the detailed shaping of the RF components therein. This paper describes the optimization of the feed network layout inside the port plug with 4-port junction, vacuum window and service stub components under RF, thermo-mechanical, manufacturing and assembly constraints.
