NDLI: Self-Excitation of a Tapered Gyrotron Oscillator

Content Provider	IEEE Xplore Digital Library
Author	Nusinovich, G.S. Ruifeng Pu Sinitsyn, O.V. Jiao Yu Antonsen, T.M. Granatstein, V.L.
Copyright Year	1973
Abstract	This paper consists of two parts. In the first part, the linear theory of a tapered gyrotron oscillator, which can operate either as a gyro-backward-wave oscillator or a gyromonotron, is developed. The formulation is done for the case of excitation near cutoff frequency. The self-excitation conditions are found in a cold-cavity approximation when the axial structure that is independent of the electron beam can be described by either the Airy function or the sinusoidal distribution in tapered and constant-radius waveguides, respectively. In the second part, results of this general treatment are used for estimating the start currents and operating parameters of a terahertz-range gyrotron oscillator. For making these estimates, an axial profile of an interaction circuit is specified, and for a chosen profile, the axial structures and quality factors of modes with different numbers of axial variations are calculated with the use of available codes. This information allows us to estimate the start current by using results of the general theory obtained in the cold-cavity approximation in the first part of the paper. Then, the start currents are determined with the use of a self-consistent set of equations. The results obtained also allow estimating the tolerances in circuit fabrication.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1200
Ending Page	1207
Page Count	8
File Size	309485
File Format	PDF
ISSN	00933813
Volume Number	38
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gyrotrons Oscillators Circuits Electromagnetic radiation Physics Senior members Cutoff frequency Electron beams Electromagnetic waveguides Q factor terahertz radiation Gyrotron oscillator start current
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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