Development of High-Power Millimeter-Wave Surface-Wave Generators Based on Relativistic Ribbon Electron Beams

• Published in: Radiophysics and quantum electronics 2020-10, Vol.63 (5-6), p.458-468
• Main Authors: Malkin, A. M., Zaslavsky, V.Yu, Zheleznov, I.V., Goykhman, M. B., Gromov, A. V., Palitsin, A. V., Sergeev, A. S., Fedotov, A. É., Makhalov, P. B., Ginzburg, N. S.
• Format: Article
• Language: English
• Subjects: Analysis; Astronomy; Astrophysics and Astroparticles; Electron beams; Electrons; Generators; Hadrons; Heavy Ions; Lasers; Mathematical and Computational Physics; Millimeter waves; Nuclear Physics; Observations and Techniques; Optical Devices; Optics; Particle energy; Particle in cell technique; Photonics; Physics; Physics and Astronomy; Pulsed radiation; Quantum Optics; Relativistic effects; Surface waves; Theoretical
• ISSN: 0033-8443; 1573-9120
• DOI: 10.1007/s11141-021-10071-1

We analyze theoretically millimeter-wave surface-wave generators based on relativistic ribbon electron beams within the framework of the averaged quasioptical model, as well as using direct numerical modeling by the Particle-in-Cell method. The regime of excitation of π modes and the regime of the backward-wave oscillator based on a surface wave are studied. The possibility to achieve generation of pulsed radiation at a frequency of 75 GHz with a power of up to 100 MW on the basis of the SINUKI acceleration (IAP RAS) is demonstrated. Experiments have been performed to test experimentally the formation of a relativistic ribbon electron beam with a particle energy of 600 keV, a current of up to 1 kA, and a width of up to 2 cm, which will be used to feed the developed generator.