Experimental demonstration of the third cyclotron harmonic excitation in technological gyrotron with delayed selective feedback

A P Fokin; A S Sedov; A S Zuev

doi:10.1063/1.5140720

Experimental demonstration of the third cyclotron harmonic excitation in technological gyrotron with delayed selective feedback

Rev Sci Instrum. 2020 Feb 1;91(2):024706. doi: 10.1063/1.5140720.

Authors

A P Fokin¹, A S Sedov¹, A S Zuev¹

Affiliation

¹ Federal Research Center Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), 46 Ul'yanov Street, 603950 Nizhny Novgorod, Russia.

PMID: 32113385
DOI: 10.1063/1.5140720

Abstract

The excitation and effective selection of modes at high harmonics of the cyclotron frequency are experimentally demonstrated using a delayed feedback into the gyrotron. The operation at the third cyclotron harmonic at the frequency of 40.5 GHz with the output power of 3 kW and efficiency 8% is observed in a continuous wave gyrotron with an oil-cooled magnet with a field of 0.5 T in the interaction space.