Performance of the 140 GHz prototype transmission system for ECRH on the stellarator W7-X

Author

Kasparek, Walter ; Empacher, L. ; Erckmann, V. ; Gantenbein, Gerd ; Hollmann, F. ; Schuller, P.G. ; Schworer, K. ; Weissgerber, M.

Author_Institution

Inst. fur Plasmaforschung, Stuttgart Univ., Germany

Volume

1

fYear

2001

Firstpage

296

Abstract

For the future stellarator W7-X of IPP at Greifswald, a powerful electron cyclotron resonance heating facility is being built which will include 10 gyrotrons at 140 GHz with a CW power of 1 MW each plus 2 optional gyrotrons at 70 GHz. The millimetre wave power will be transmitted fully optically via two multiple-beam waveguides (MBWG) with a length of about 50 m. This paper presents calculations and low-power measurements of the transmission characteristics of a prototype MBWG, which promise a high transmission efficiency for the ECRH system under construction.

Keywords

cyclotrons; millimetre wave propagation; plasma electromagnetic wave propagation; plasma radiofrequency heating; plasma toroidal confinement; stellarators; waveguides; 1 MW; 140 GHz; 70 GHz; CW power; ECRH; Greifswald; IPP; W7-X stellarator; electron cyclotron resonance heating facility; high transmission efficiency; low-power measurements; millimetre wave power; multiple-beam waveguides; prototype transmission system; transmission characteristics; Cyclotrons; Electrons; Gyrotrons; Heating; Mirrors; Plasma measurements; Plasma sources; Prototypes; Resonance; Structural beams;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2001. IEEE

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7070-8

Type

conf

DOI

10.1109/APS.2001.958851

Filename

958851