Experimental Investigations and Analysis of Parasitic RF Oscillations in High-Power Gyrotrons

Author

Gantenbein, Gerd ; Dammertz, Günter ; Flamm, Jens ; Illy, Stefan ; Kern, Stefan ; Latsas, George ; Piosczyk, Bernhard ; Rzesnicki, Tomasz ; Samartsev, Andrey ; Schlaich, Andreas ; Thumm, Manfred ; Tigelis, Ioannis

Author_Institution

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

Volume

38

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1168

Lastpage

1177

Abstract

Megawatt gyrotrons are found to suffer from various parasitic oscillations, in particular, RF oscillations in the beam tunnel prior to the desired interaction zone (the cavity). This paper describes the experimental results from a gyrotron experiment which was dedicated to investigate parasitic oscillations in the beam tunnel and to verify improved beam-tunnel structures. A system for improved spectral measurements and a new analysis method are presented. The results verify theoretical predictions on the parasitic oscillations, and in effect validate the corresponding improved beam-tunnel structure. In addition, other types of parasitic oscillations were observed and explained.

Keywords

gyrotrons; oscillations; beam-tunnel structures; gyrotron experiment; high-power gyrotrons; megawatt gyrotrons; parasitic RF oscillations; theoretical predictions; Beam tunnel; gyrotron; parasitic oscillations;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2010.2041366

Filename

5439699