Frequency Locking and Stabilization Regimes in High-Power Gyrotrons with Low-Q Resonators


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Using a nonstationary self-consistent model, we analyze the frequency locking and stabilization regimes arising in gyrotrons with low-Q resonators under the action of an external signal or when reflections from a remote nonresonant load are introduced. In the simulations, we used the parameters of high-power gyrotrons designed for controlled thermonuclear fusion with optimized resonator profile. This approach makes it possible to determine output characteristics of the gyrotrons operated in considered regimes taking into account the effect of the incident wave (external or reflected) on the longitudinal field structure with greater precision compared with the earlier results based on the fixed RF-field structure approximation, while qualitative results of the two approaches coincide. Analysis of the effect of reflections from a remote load has demonstrated a substantial dependence of the efficiency of the gyrotron frequency stabilization on the ratio between the characteristic time scale of the synchronism detuning fluctuations and the signal delay time.

Sobre autores

I. Zotova

Institute of Applied Physics of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: zotova@appl.sci-nnov.ru
Rússia, Nizhny Novgorod

N. Ginzburg

Institute of Applied Physics of the Russian Academy of Sciences; N. I. Lobachevsky State University of Nizhny Novgorod

Email: zotova@appl.sci-nnov.ru
Rússia, Nizhny Novgorod; Nizhny Novgorod

G. Denisov

Institute of Applied Physics of the Russian Academy of Sciences; N. I. Lobachevsky State University of Nizhny Novgorod

Email: zotova@appl.sci-nnov.ru
Rússia, Nizhny Novgorod; Nizhny Novgorod

R. Rozental’

Institute of Applied Physics of the Russian Academy of Sciences

Email: zotova@appl.sci-nnov.ru
Rússia, Nizhny Novgorod

A. Sergeev

Institute of Applied Physics of the Russian Academy of Sciences

Email: zotova@appl.sci-nnov.ru
Rússia, Nizhny Novgorod

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