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Starting currents of modes in cylindrical cavities with mode-converting corrugations for second-harmonic gyrotrons

Tkachova, Tetiana I.; Shcherbinin, Vitalii I.; Tkachenko, Viktor I.; Ioannidis, Zisis C.; Thumm, Manfred; Jelonnek, John

Abstract (englisch):
A self-consistent system of equations (known as single-mode gyrotron equations) is extended to describe the beam-wave interaction in a cylindrical gyrotron cavity with mode-converting longitudinal corrugations, which produce coupling of azimuthal basis modes. The system of equations is applied to investigate the effect of corrugations on starting currents of the cavity modes. For these modes, eigenvalues, ohmic losses, field structure, and beam-wave coupling coefficients are investigated with respect to the corrugation parameters. It is shown that properly sized mode-converting corrugations are capable of improving the selectivity properties of cylindrical cavities for second-harmonic gyrotrons.

Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Institut für Hochfrequenztechnik und Elektronik (IHE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1866-6892, 1866-6906
KITopen-ID: 1000130028
HGF-Programm 31.13.02 (POF IV, LK 01) Plasma Heating & Current Drive Systems
Erschienen in Journal of infrared, millimeter, and terahertz waves
Verlag Springer Verlag
Vorab online veröffentlicht am 15.02.2021
Nachgewiesen in Scopus
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