Further design steps towards a 4 MW 170 GHz coaxial-cavity gyrotron

Author

Beringer, Matthias H. ; Illy, Stefan ; Jin, J. ; Kern, Stefan ; Rode, J. Christian ; Thumm, Manfred

Author_Institution

Inst. fur Hochleistungsimpuls- und Mikrowellentech. (IHM), Forschungszentrum Karlsruhe (FZK), Karlsruhe, Germany

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

2

Abstract

It is desirable to increase the RF power per gyrotron tube for plasma heating in future fusion devices. The realization of gyrotrons with highest possible output power will reduce their overall number and superconducting magnets required for future fusion reactors. In this work the feasibility of a 4 MW 170 GHz coaxial-cavity gyrotron is investigated. A mode selection procedure is presented and proper designs of major gyrotron components are shown. A possible outer wall corrugation of the cavity is discussed and possible improvements are shown. Further electron gun studies are performed using diode- and triode-type magnetron injection guns (MIGs). First layouts for the two-cut launcher are considered.

Keywords

electron guns; fusion reactor design; fusion reactor ignition; gyrotrons; magnetrons; millimetre wave devices; plasma radiofrequency heating; superconducting magnets; ECRH; coaxial-cavity gyrotron; diode-type magnetron injection gun; electron gun; frequency 170 GHz; fusion reactor; gyrotron component design; mode selection procedure; plasma heating; power 4 MW; superconducting magnet; triode-type magnetron injection gun; two-cut launcher; Coaxial components; Electrons; Fusion reactor design; Fusion reactors; Gyrotrons; Heating; Plasma devices; Power generation; Radio frequency; Superconducting magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5324746

Filename

5324746