Numerical simulation of dynamic processes in gyrotrons with low-Q cavities

We study theoretically models of gyrotrons having fixed and self-consistent axial structures of the high-frequency field in the cavity with an actual profile. The limits of applicability of the model with a given field structure are determined during the study of competition of the operating and par...

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Bibliographic Details
Published in:Radiophysics and quantum electronics 2006-04, Vol.49 (4), p.275-287
Main Authors: Zavolsky, N. A., Zapevalov, V. E., Moiseev, M. A.
Format: Article
Language:English
Subjects:
Competition
Computer simulation
Dynamics
Gyrotrons
Holes
Mathematical models
Optimization
Quantum electronics
Stability
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Summary:We study theoretically models of gyrotrons having fixed and self-consistent axial structures of the high-frequency field in the cavity with an actual profile. The limits of applicability of the model with a given field structure are determined during the study of competition of the operating and parasitic modes. It is shown that for the regimes which are optimal in terms of efficiency, the influence of the nonfixed nature of the high-frequency field structure on the starting current, the stability of stationary generation of the operating mode, the efficiency, the output power, and the thermal ohmic load of the cavity is insignificant. As the beam current and the mismatch between the cutoff frequencies of the operating and parasitic modes increase, significant qualitative differences between the models with given and self-consistent axial structures of the high-frequency field are observed.[PUBLICATION ABSTRACT]
ISSN:0033-8443
1573-9120
DOI:10.1007/s11141-006-0061-x