NDLI: Starting current of a 140 GHz/1.5 MW coaxial cavity gyrotron oscillator

Content Provider	IEEE Xplore Digital Library
Author	Shi-Chang Zhang Thumm, M.
Copyright Year	1997
Description	Author affiliation: Dept. of Appl. Phys., Southwest Jiaotong Univ., Sichuan, China (Shi-Chang Zhang)
Abstract	Based on the gyrokinetics of free-electron masers, the starting current is derived for a coaxial-cavity gyrotron oscillator, where the misalignment between the inner rod and outer cavity is taken into account. It is found that the change of the cutoff wavenumber due to the existence of misalignment substantially influences the distribution of RF fields, consequently influences the interaction between the wave and relativistic electron beam. As a practical application, we present a numerical analysis of the 1.5 MW/140 GHz, TE/sub 28,16,1/ coaxial-cavity gyrotron oscillator constructed at the Research Center Karlsruhe (FZK). Results show that the misalignment substantially decreases the output power and increases the starting current, and the output power becomes sensitive to the beam energy due to the existence of the misalignment.
Starting Page	341
Ending Page	344
File Size	256189
Page Count	4
File Format	PDF
ISBN	962442117X
DOI	10.1109/APMC.1997.659373
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-12-02
Publisher Place	Hong Kong
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coaxial components Gyrotrons Oscillators Electron beams Masers Power generation Eigenvalues and eigenfunctions Heating Physics Numerical analysis
Content Type	Text
Resource Type	Article

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