Recent results of the step-tunable 105-140 GHz, 1MW gyrotron development at Forschungszentrum Karisruhe

Author

Koppenburg, K. ; Arnold, A. ; Dammertz, G. ; Prinz, H.O. ; Thumm, M. ; Yang, X.

Author_Institution

Assoc. EURATOM-FZK, Inst. fur Hochleistungsimpuls und Mikrowellentech., Eggenstein Leopoldshafen, Germany

Volume

1

fYear

2005

fDate

19-23 Sept. 2005

Firstpage

291

Abstract

A multifrequency step-tunable 1MW-gyrotron for controlling plasma instabilities in fusion tokamaks has been designed. It operates in the TE_22.8 mode at 140 GHz and the TE_17.6 mode at 105 GHz and 7 other modes in between. In the final stage for long pulse operation, this gyrotron should be equipped with an advanced synthetic diamond Brewster window and an optimized beam forming system. The last design results of the Brewster window and the quasi-optical mode converter are presented.

Keywords

Tokamak devices; gyrotrons; microwave frequency convertors; plasma instability; plasma toroidal confinement; 1 MW; beam forming system; fusion tokamaks; long pulse operation; plasma instability control; quasi-optical mode converter; step-tunable gyrotron; synthetic diamond Brewster window; Chemical vapor deposition; Control systems; Gyrotrons; Loss measurement; Mirrors; Plasmas; Prototypes; Thickness measurement; Variable speed drives; Windows;

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.2005.1572523

Filename

1572523