165 GHz, 1.5 MW-coaxial cavity gyrotron with depressed collector

Author

Piosczyk, Bernhard ; Braz, Oliver ; Dammertz, Günter ; Iatrou, Christos T. ; Illy, Stefan ; Kuntze, Michael ; Michel, Georg ; Thumm, Manfred

Author_Institution

Inst. fur Tech. Phys., Karlsruhe Univ., Germany

Volume

27

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

484

Lastpage

489

Abstract

A further step in the development of a coaxial-cavity gyrotron operated in the transverse electric TE_-31,17 mode at 165 GHz is presented. The gyrotron has been equipped with a quasi-optical output system consisting of a Vlasov launcher with a single cut and two mirrors, one with a quasi-elliptic and the other with a nonquadratic phase correcting surface. The radio frequency (RF) power is transmitted through a single output window. A maximum output power of 1.7 MW has been achieved. At the nominal operational parameters an RF power of 1.3 MW with an efficiency of 27.3% has been measured. The efficiency increases to 41% in operation with a single-stage depressed collector

Keywords

cavity resonators; gyrotrons; millimetre wave tubes; 1.3 to 1.7 MW; 1.5 MW; 165 GHz; 27.3 to 41 percent; RF power transmission; TE_-31,17 mode; Vlasov launcher; coaxial cavity gyrotron; depressed collector; nonquadratic phase correcting mirror surface; quasi-elliptic mirror; quasi-optical output system; transverse electric mode; Coaxial components; Gyrotrons; Hollow waveguides; Mirrors; Power generation; Power measurement; Radio frequency; Switches; Tellurium; US Government;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.772277

Filename

772277