Title :
A study of mode conversion and output beam profile in long distance corrugated waveguide transmission line
Author :
Oda, Yuta ; Kajiwara, Kagemasa ; Takahashi, Koichi ; Sakamoto, Kazumitsu
Author_Institution :
Japan Atomic Energy Agency, Naka, Japan
Abstract :
In JAEA, mode conversion in the corrugated waveguide system which is the same inner diameter of the ITER waveguide transmission line was studied. The mode contents at the input and end of the straight section of TL were measured and the mode conversion loss caused by the straight section which composed from several pieces of straight waveguides was discussed. The method to minimize the mode conversion loss in each section was also proposed.
Keywords :
Tokamak devices; plasma radiofrequency heating; plasma toroidal confinement; ITER waveguide transmission line; corrugated waveguide system; current drive system; electron cyclotron heating; long distance corrugated waveguide transmission line; mode conversion loss; output beam profile; Couplings; Laser beams; Laser modes; Measurement by laser beam; Optical waveguides; Waveguide lasers; EC H&CD; ITER; gyrotrons; mode conversion; transmission lines;
Conference_Titel :
Fusion Engineering (SOFE), 2013 IEEE 25th Symposium on
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4799-0169-2
DOI :
10.1109/SOFE.2013.6635436
