Experimental study of a two-cavity gyrotron with feedback between cavities

Igor I. Antakov; Igor G. Gachev; Evgeny V. Sokolov

doi:10.1117/12.218576

8 September 1995 Experimental study of a two-cavity gyrotron with feedback between cavities

Igor I. Antakov, Igor G. Gachev, Evgeny V. Sokolov

Proceedings Volume 2557, Intense Microwave Pulses III; (1995) https://doi.org/10.1117/12.218576
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

A two-cavity gyrotron has some advantages in comparison with a traditional gyrotron. In particluar, the use of relatively short cavities with properly chosen length of the drift tube between them allows to enhance output power retaining the maximum efficiency, and to realize a tunable oscillator with high efficiency and power. The use of feedback between the cavities is proposed to solve the problem of mode competition in such an oscillator. The results of an experimental study of a Ka-band two-cavity gyrotron operating in the TE₀₂₁ cavity mode are presented. The maximum power 300 kW was achieved with efficiency of 23%, the maximum efficiency was about 30%. Three zones of generation corresponding to different phase length of the feedback loop were observed. Experiments showed that the use of feedback in a two-cavity gyrotron subdues spurious oscillations.

Citation Download Citation

Igor I. Antakov, Igor G. Gachev, and Evgeny V. Sokolov "Experimental study of a two-cavity gyrotron with feedback between cavities", Proc. SPIE 2557, Intense Microwave Pulses III, (8 September 1995); https://doi.org/10.1117/12.218576

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KEYWORDS

Magnetism

Oscillators

Electron beams

Wave propagation

Feedback loops

Ka band

Ceramics

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