Experimental studies of long-lifetime cold cathodes for high-power microwave oscillators

Gunin, A. V.; Landl, V.F.; Korovin, S. D.; Mesyats, G.; Pegel, I. V.; Rostov, V. V.

doi:10.1109/27.887668

Cited by 42 publications

(1 citation statement)

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“…To eliminate this effect, the cathode could be made of a material resistant to erosion, such as graphite or stainless steel, and the sharp corners rounded. For example, when equipped with a graphite cathode, a device with the same shape of cathode has worked for 100 Â 10 6 shots at a current level of 5 kA, voltage of 500 kV, and a repetition rate ranging from 100 to 150 Hz [14]. Following this, no significant erosion of the cathode or anode was observed.…”

Section: Design Of the Switch And Electron Beam Parameters Necesmentioning

confidence: 99%

High power microwave switch employing electron beam triggering with application to active rf pulse compressors

Иванов

Исаев

Lobaev

et al. 2011

Phys. Rev. ST Accel. Beams

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Switch for modulation of the Q factor of a multimode rf energy storage resonator is described. The rf energy is stored in a cylindrical resonator in the TE 02 mode, and switched out from it in the TE 01 mode. The operating principle of the switch is based on effecting a fast increase in the TE 02 ! TE 01 mode coupling coefficient when an electron beam is injected into the switch cavity. This paper focuses on use of the switch in an active rf pulse compressor. Use of the electron beam allows one to separate the switching element from the compressor itself, and therefore to eliminate limitations to the level of switched power that exists for other switches. The pulse compressor was tested at low power at a frequency of 11.424 GHz. The level of peak power gain achieved in these experiments was 19-21, with compressed pulse widths of 30-40 ns. Good stability and repeatability of the shape of compressed pulses was observed. High power versions of this switch appear promising for use in active GW-level microwave compressors.

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Section: Design Of the Switch And Electron Beam Parameters Necesmentioning

confidence: 99%