Studies of a Gyrotron with the Echelette Cavity

• Published in: Radiophysics and quantum electronics Vol. 57; no. 6; pp. 446 - 454
• Main Authors: Belousov, V. I., Vlasov, S. N., Zavolsky, N. A., Zapevalov, V. E., Koposova, E. V., Kornishin, S. Yu, Kuftin, A. N., Moiseev, M. A., Khizhnyak, V. I.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.11.2014; Springer; Springer Nature B.V
• Subjects: Astronomy; Astrophysics and Astroparticles; Computational efficiency; Electrodynamics; Gyrotrons; Hadrons; Heavy Ions; Holes; Lasers; Mathematical analysis; Mathematical and Computational Physics; Nuclear Physics; Observations and Techniques; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; Plasma physics; Quantum electronics; Quantum Optics; Theoretical; Transmission; Walls; Waveguides; Wave Beam; Ohmic Loss; Circular Waveguide; Conical Beam; Corrugate Surface
• ISSN: 0033-8443; 1573-9120
• DOI: 10.1007/s11141-014-9527-4

We describe a gyrotron which is operated at the first gyrofrequency harmonic and has an echelette cavity with the sinusoidal corrugation profile. A method for calculating the parameters of the echelette cavity and the gyrotron is described. The results of measuring the electrodynamic characteristics of the echelette cavity and studying experimentally the gyrotron with such a cavity are presented. It is shown that the gyrotron has a rarefied spectrum of eigenoscillations and the efficiency at the level of typical megawatt-power gyrotrons, and is characterized by a significantly lower degree of cavity wall heating. The structure of radiation from the gyrotron with the echelette cavity and the possibility of transmitting this radiation by means of a mirror waveguide, are discussed.