Research on advanced high power gyrotrons at FZK

Author

Thumm, M. ; Amold, C.A. ; Borie, E. ; Dammertz, G. ; Danilov, I. ; Dumbrajs, O. ; Heidinger, R. ; Illy, S. ; Jin, L. ; Koppenburg, K. ; Michel, G. ; Piosczyk, B. ; Rzesnicki, T. ; Yang, X.

Author_Institution

Instiut fuer Hochleistungsimpuls- und Mikrowellentech. (IHM), Forschungszentrum Karlsruhe, Karlsruhe, Germany

fYear

2004

fDate

18-23 July 2004

Firstpage

399

Lastpage

404

Abstract

At Forschungszentrum Karlsruhe (FZK) R&D investigations are performed both on a 2 MW, 170 GHz coaxial cavity gyrotron for ITER and on a stepwise frequency tunable 1 MW gyrotron for the ASDEX Upgrade tokamak (105-140 GHz). In case of the coaxial gyrotron the previously used experimental 165 GHz tube has been modified for operation at 170 GHz in order to verify the design of the main components (electron gun, cavity and RF output system) of a corresponding industrial prototype which is under development in cooperation between EURATOM Associations together with European tube industry. For the stepwise tunable gyrotron, work has been done on optimization of the quasi-optical RF output system and on a broadband CVD-diamond Brewster output window.

Keywords

Tokamak devices; chemical vapour deposition; gyrotrons; ASDEX upgrade Tokamak; At Forschungszentrum Karlsruhe R&D; EURATOM Associations; European tube industry; FZK; ITER; broadband CVD-diamond Brewster output window; coaxial cavity gyrotron; coaxial gyrotron; electron gun; frequency 105 GHz to 140 GHz; frequency 165 GHz; frequency 170 GHz; high power gyrotrons; power 1 MW; power 2 MW; quasi-optical RF output system; stepwise tunable gyrotron; Cathodes; Gyrotrons; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

High-Power Particle Beams (BEAMS 2004), 2004 International Conference on

Conference_Location

St. Petersburg

Print_ISBN

978-5-87911-088-3

Type

conf

Filename

6220566