NDLI: Optimization of the signal growth rate in a class of multicavity RKOs with axially varying geometry using a parallel real-valued evolutionary algorithm

Content Provider	IEEE Xplore Digital Library
Author	Merkle, L.D. Luginsland, J.W.
Copyright Year	2000
Description	Author affiliation: Dept. of Comput. Sci., US Air Force Acad., CO, USA (Merkle, L.D.)
Abstract	Summary form only given. The relativistic klystron oscillator (RKO) is a high power microwave (HPM) source based on enhancing mature non-relativistic klystron technology, in which the kinetic energy of a population of electrons is converted into coherent microwave radiation. There is significant interest in maximizing the growth rate of the RKO's microwave signal as a function of the RKO design parameters. This research investigates a class of multi-cavity RKOs with n/spl ges/2 cavities and n-1 drift regions. Cavities may have distinct natural frequencies, qualities, and impedances. Drift regions may have distinct radii, lengths, and loss coefficients, and consequently may have distinct stop currents. A small-signal, modal, steady-state model relates the signal growth rate to the beam parameters (voltage, current, and radius) and the waveguide parameters just mentioned. The model, which assumes weak cavity coupling and a cutoff waveguide, considers the effects of cavity resonances, electromagnetic coupling, and beam coupling. The growth rate is optimized using a parallel real-valued evolutionary algorithm (EA), which performs mutation, recombination, and selection on a population of candidate design parameters.
File Size	98894
File Format	PDF
ISBN	0780359828
ISSN	07309244
DOI	10.1109/PLASMA.2000.855141
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic waveguides Electromagnetic coupling Klystrons Optical coupling Microwave oscillators Microwave technology Kinetic energy Electrons Signal design Frequency
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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