2.5: Design of major components for a 4 MW 170 GHz coaxial-cavity gyrotron

Author

Beringer, Matthias H. ; Illy, Stefan ; Jin, Jianbo ; Kern, Stefan ; Lievin, Christophe ; Thumm, Manfred

Author_Institution

Inst. for Pulsed Power & Microwave Technol. (IHM), Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany

fYear

2010

fDate

18-20 May 2010

Firstpage

35

Lastpage

36

Abstract

For future nuclear fusion reactors it is desirable to increase the RF power per gyrotron tube used for electron cyclotron resonance heating. Using gyrotrons with higher output power will reduce their overall number and the number of super-conducting magnets required. In this work the feasibility of a 4 MW 170 GHz continuous wave (CW) coaxial-cavity gyrotron is investigated. Starting from a mode selection procedure proper studies of all major gyrotron components have been performed. Designs for the coaxial cavity, the electron gun, the two-beam quasi-optical output coupler and the collector are presented. All layouts are optimized to guarantee high efficiency and consider long-pulse operation effects.

Keywords

electron guns; gyrotrons; optical couplers; plasma radiofrequency heating; superconducting magnets; RF power; continuous wave coaxial-cavity gyrotron; electron cyclotron resonance heating; electron gun; frequency 170 GHz; gyrotron tube; long-pulse operation effects; mode selection procedure; nuclear fusion reactors; power 4 MW; super-conducting magnets; two-beam quasi-optical output coupler; Coaxial components; Cyclotrons; Electron tubes; Fusion reactor design; Fusion reactors; Gyrotrons; Heating; Inductors; Radio frequency; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2010 IEEE International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-7098-3

Type

conf

DOI

10.1109/IVELEC.2010.5503615

Filename

5503615