Design and 3-D Simulations of a 10-kW/28-GHz Gyrotron With a Segmented Emitter Based on Controlled Porosity-Reservoir Cathodes

Author

Malygin, A. ; Illy, Stefan ; Pagonakis, Ioannis Gr ; Piosczyk, B. ; Kern, Stefan ; Weggen, Joerg ; Thumm, Manfred ; Jelonnek, John ; Avramides, Konstantinos A. ; Ives, R. Lawrence ; Marsden, D. ; Collins, George

Author_Institution

Inst. for Pulsed Power & Microwave Technol., Assoc. EURATOM-KIT, Karlsruhe, Germany

Volume

41

Issue

10

fYear

2013

fDate

Oct. 2013

Firstpage

2717

Lastpage

2723

Abstract

In this paper, the design of a 10-kW/28-GHz gyrotron is presented. The main characteristic of the new gyrotron is the emitter ring, which is assembled from twelve individually supplied emitters based on controlled-porosity reservoir (CPR) technology. The main goal is to evaluate the use of CPR emitters for gyrotron applications. In addition, the azimuthally segmented emitter ring could be used for the generation of controlled nonuniform electron beams. In this way, it is planned to experimentally study the effect of nonuniform emission on the gyrotron operation. In this context, the effect of nonuniform emission on the beam quality is numerically investigated using the 3-D, electrostatic, parallel-code Ariadne, while the effect of the degraded beam on mode coupling and stability of the wave-particle interaction in the cavity is numerically studied using the nonstationary, self-consistent multimode cavity code Euridice.

Keywords

cathodes; electron guns; electrostatics; gyrotrons; CPR technology; controlled-porosity reservoir technology; electrostatic; emitter ring; frequency 28 GHz; gyrotron; mode coupling; multimode cavity code Euridice; nonuniform electron beams; nonuniform emission; parallel-code Ariadne; porosity-reservoir cathodes; power 10 kW; segmented emitter; wave-particle interaction; Cathodes; Cavity resonators; Current density; Educational institutions; Electron beams; Gyrotrons; Cathodes; electron gun; emitter ring; gyrotron; nonuniform emission;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2255069

Filename

6615938