Design of a 10kW/28GHz gyrotron with a segmented emitter using controlled-porosity reservoir cathodes

Author

Malygin, Anton ; Illy, Stefan ; Pagonakis, Ioannis ; Piosczyk, Bernhard ; Kern, Stefan ; Weggen, Joerg ; Thumm, Manfred ; Avramides, Kostas ; Ives, Lawrence ; Marsden, David

Author_Institution

Assoc. EURATOM-KIT, Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany

fYear

2012

fDate

24-26 April 2012

Firstpage

331

Lastpage

332

Abstract

In this paper, the design of a 10kW/28GHz gyrotron tube with an emitter ring based on a controlled-porosity reservoir (CPR) cathode is presented. CPR emitters provide significantly higher current density (up to 50 A/cm²), as well as, longer life time (10⁵ hours) than conventional emitters. The main goals of this experimental tube are to evaluate the use of CPR emitters for gyrotron applications, as well as to study the effect of non-uniform emission on gyrotron operation.

Keywords

cathodes; gyrotrons; microwave tubes; porosity; CPR emitters; controlled-porosity reservoir cathodes; emitter segmentation; frequency 28 GHz; gyrotron; higher current density; nonuniform emission; power 10 kW; Anodes; Cathodes; Cavity resonators; Electron beams; Electron tubes; Gyrotrons; Reservoirs; Cathodes; controlled porosity; electron guns;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2012 IEEE Thirteenth International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4673-0188-6

Electronic_ISBN

978-1-4673-0187-9

Type

conf

DOI

10.1109/IVEC.2012.6262184

Filename

6262184