Experimental analysis of the inserted waveguide CVD diamond window prototype for the ITER ECRH upper launcher

Author

Scherer, T.A. ; Meier, A. ; Strauss, D. ; Schreck, S. ; Takahashi, K. ; Kajiwara, K. ; Oda, Y. ; Sakamoto, K. ; Saibene, G.

Author_Institution

Inst. fur Angewandte Mater., KIT, Karlsruhe, Germany

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

2

Abstract

A new ITER torus window assembly with CVD diamond disk and corrugated waveguides is being investigated by using IR imaging and temperature measuring technique during high power RF microwave loading up to 0.5 MW at a frequency of 170 GHz at the JAEA Gyrotron facility. The inserted waveguide structure can minimize the penetration of high order modes into the window cuff or other parts of the window. The occurrence of higher order modes by mode conversion in the window assembly structure is monitored.

Keywords

Tokamak devices; diamond; gyrotrons; plasma CVD; plasma diagnostics; plasma filled waveguides; plasma radiofrequency heating; plasma temperature; plasma toroidal confinement; C; IR imaging; ITER ECRH upper launcher; ITER torus window assembly; JAEA gyrotron facility; frequency 170 GHz; high power RF microwave loading; inserted waveguide CVD diamond window prototype; mode conversion; temperature measuring technique; window cuff; Cooling; Diamond-like carbon; Microwave measurements; Microwave theory and techniques; Prototypes; Temperature; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6104800

Filename

6104800