Development of the transmission line and the launcher for the ITER ECH system

Author

Kajiwara, Ken ; Takahashi, Koji ; Kobayashi, Noriyuki ; Kasugai, Atsushi ; Kobayashi, Takayuki ; Sakamoto, Keishi

Author_Institution

Japan Atomic Energy Agency, Naka

fYear

2007

fDate

2-9 Sept. 2007

Firstpage

793

Lastpage

794

Abstract

The launcher of a high power millimeter wave is designed for electron cyclotron heating system of ITER plasma. The quasi-optical system was adopted for a transmission lines in the launcher, which simplify the configuration largely comparing with the reference design of the waveguide arrays, and that the heat load was reduced by less than half. On the high power experiment with transmission line of 40 m long with 7 miter bends, 96% of the high transmission efficiency was demonstrated.

Keywords

Tokamak devices; fusion reactor instrumentation; plasma filled waveguides; plasma radiofrequency heating; plasma toroidal confinement; ITER ECH system; ITER plasma; electron cyclotron heating system; heat load; high power experiment; high power millimeter wave; quasioptical system; transmission line; waveguide arrays; Electrons; Heating; Mirrors; Optical surface waves; Optical waveguides; Plasma temperature; Power transmission lines; Rough surfaces; Surface roughness; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on

Conference_Location

Cardiff

Print_ISBN

978-1-4244-1438-3

Type

conf

DOI

10.1109/ICIMW.2007.4516734

Filename

4516734