20.2: Testing of the omniguide traveling-wave tube

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...

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Bibliographic Details
Main Authors: Shchegolkov, Dmitry Yu, Earley, Lawrence M, Haynes, W Brian, Renneke, Richard M, Smirnova, Evgenya I, Yampolsky, Nikolai A
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Broadband amplifiers
dielectric traveling-wave tube
Dielectrics
Electron beams
Frequency
Gain measurement
Laboratories
Photonic band gap
photonic band gap structure
Remote monitoring
Testing
W-band
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Summary: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.
DOI:10.1109/IVELEC.2010.5503475