20.2: Testing of the omniguide traveling-wave tube

Author

Shchegolkov, Dmitry Yu ; Earley, Lawrence M. ; Haynes, W. Brian ; Renneke, Richard M. ; Smirnova, Evgenya I. ; Yampolsky, Nikolai A.

Author_Institution

Los Alamos Nat. Lab., Los Alamos, NM, USA

fYear

2010

fDate

18-20 May 2010

Firstpage

497

Lastpage

498

Abstract

We have designed, fabricated and tested with low power a novel W-band TWT based on a slow-wave cylindrically-symmetric PBG dielectric structure, or an “omniguide”. PBG TWT structures have great potential for very large bandwidth and linear dispersion. A gain experiment is under way at Los Alamos with the structure being driven by a 2 A, 110 kV electron beam. In this presentation we will report the design of the omniguide TWT structure, theoretical computations of the gain and the results of S-parameters measurements. We will also describe the electron beam test stand setup and report first results from the gain measurement experiment.

Keywords

S-parameters; dielectric materials; electron beams; millimetre wave tubes; photonic band gap; travelling wave tubes; S-parameters measurements; W-band TWT; current 2 A; electron beam; gain measurement; linear dispersion; omniguide traveling-wave tube testing; slow-wave cylindrically-symmetric PBG dielectric structure; voltage 110 kV; Bandwidth; Broadband amplifiers; Dielectrics; Electron beams; Frequency; Gain measurement; Laboratories; Photonic band gap; Remote monitoring; Testing; W-band; dielectric traveling-wave tube; photonic band gap structure;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2010 IEEE International

Conference_Location

Monterey, CA

Print_ISBN

978-1-4244-7098-3

Type

conf

DOI

10.1109/IVELEC.2010.5503475

Filename

5503475