Progress report on the ECRH transmission system at the stellarator W7-X

Author

Gantenbein, G. ; Kasparek, W. ; Dammertz, G. ; Erckmann, V. ; Grunert, M. ; Hollmann, F. ; Jonitz, L. ; Laqua, H. ; Michel, G. ; Purps, F. ; Schulz, T. ; Schworer, K. ; Weissgerber, M.

Author_Institution

Inst. fur Plasmaforschung, Stuttgart Univ., Germany

Volume

2

fYear

2005

fDate

19-23 Sept. 2005

Firstpage

427

Abstract

The ECRH system of the stellarator W7-X, which is currently under construction, plays a dominant role for continuous plasma heating and current drive during the operation of the machine. The ECRH system will provide a power of 10 MW in continuous wave at 140 GHz. The RF power is generated by 10 gyrotrons which are placed 25-40 m away from the W7-X torus in a special building, the transmission of the power is performed by an optical system which includes in total about 160 reflecting mirrors.

Keywords

plasma filled waveguides; plasma radiofrequency heating; stellarators; 10 MW; 140 GHz; 25 to 40 m; ECRH transmission system; W7-X torus; current drive; electron cyclotron resonance heating; gyrotrons; optical system; plasma heating; reflecting mirrors; stellarator W7-X; Arrayed waveguide gratings; Couplers; Gyrotrons; Mirrors; Optical waveguides; Plasmas; Power measurement; Radio frequency; Structural beams; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on

Print_ISBN

0-7803-9348-1

Type

conf

DOI

10.1109/ICIMW.2005.1572595

Filename

1572595