Spatio-temporal Theory of a Frequency-tunable Gyrotron Based on a Three-mirror Cavity

We describe results of a quasi-analytical spatio-temporal theory of a gyrotron based a three-mirror cavity and operating in the resonant travelling-wave tube regime of interaction of electrons with the operating wave propagating in a direction perpendicular to the direction of translational motion o...

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Bibliographic Details
Main Authors: Novak, E. M., Savilov, A. V.
Format: Conference Proceeding
Language:English
Subjects:
Gyrotrons
Magnetic fields
Microwave amplifiers
Microwave circuits
Microwave theory and techniques
Resonant frequency
Sensitivity
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Summary:We describe results of a quasi-analytical spatio-temporal theory of a gyrotron based a three-mirror cavity and operating in the resonant travelling-wave tube regime of interaction of electrons with the operating wave propagating in a direction perpendicular to the direction of translational motion of electrons. Such a system has a dense spectrum of eigenmodes; due to this fact, it is easy to provide frequency tuning by changing the excited modes. In this work, we describe a simple 2D model of such a gyrotron and demonstrate possibility of achieving regimes stable single-mode operation in the case of relatively low operating electron currents. We describe also a mechanism of transition to multi-frequency regimes taking place at higher operating currents.
ISSN:2831-5804
DOI:10.1109/PIERS62282.2024.10618559