Long-pulse operation of a megawatt-class plasma-assisted slow-wave oscillator

A. G. Shkvarunets; J. Rodgers; Y. Carmel; G. S. Nusinovich

doi:10.1063/1.2344856

Long-pulse operation of a megawatt-class plasma-assisted slow-wave oscillator

A. G. Shkvarunets, J. Rodgers, Y. Carmel, G. S. Nusinovich

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9 Scopus citations

Abstract

Demonstration of a plasma-assisted, helix-based slow-wave 1.2 GHz oscillator (pasotron) operating at megawatt power levels with pulse durations of approximately 0.6 ms and generating about 0.6 kJ of microwave energy per pulse without pulse shortening is presented. This result was achieved in spite of significant voltage and current drop as well as the temporal evolution of the gas pressure in the interaction space during the rf pulse. The conditions for stable operation or mode hopping were studied and experimentally observed. The physical interpretation for this effect, which was caused by drop in the accelerating voltage due to limited energy storage in the power supply, is given. The results indicate that stable, high-efficiency, single mode operation of the pasotron with output energy of 1 kJ/pulse and beyond can be realized.

Original language	English
Article number	103503
Journal	Applied Physics Letters
Volume	89
Issue number	10
DOIs	https://doi.org/10.1063/1.2344856
State	Published - 15 Sep 2006
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Long-pulse operation of a megawatt-class plasma-assisted slow-wave oscillator",

abstract = "Demonstration of a plasma-assisted, helix-based slow-wave 1.2 GHz oscillator (pasotron) operating at megawatt power levels with pulse durations of approximately 0.6 ms and generating about 0.6 kJ of microwave energy per pulse without pulse shortening is presented. This result was achieved in spite of significant voltage and current drop as well as the temporal evolution of the gas pressure in the interaction space during the rf pulse. The conditions for stable operation or mode hopping were studied and experimentally observed. The physical interpretation for this effect, which was caused by drop in the accelerating voltage due to limited energy storage in the power supply, is given. The results indicate that stable, high-efficiency, single mode operation of the pasotron with output energy of 1 kJ/pulse and beyond can be realized.",

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T1 - Long-pulse operation of a megawatt-class plasma-assisted slow-wave oscillator

AU - Shkvarunets, A. G.

AU - Rodgers, J.

AU - Carmel, Y.

AU - Nusinovich, G. S.

PY - 2006/9/15

Y1 - 2006/9/15

N2 - Demonstration of a plasma-assisted, helix-based slow-wave 1.2 GHz oscillator (pasotron) operating at megawatt power levels with pulse durations of approximately 0.6 ms and generating about 0.6 kJ of microwave energy per pulse without pulse shortening is presented. This result was achieved in spite of significant voltage and current drop as well as the temporal evolution of the gas pressure in the interaction space during the rf pulse. The conditions for stable operation or mode hopping were studied and experimentally observed. The physical interpretation for this effect, which was caused by drop in the accelerating voltage due to limited energy storage in the power supply, is given. The results indicate that stable, high-efficiency, single mode operation of the pasotron with output energy of 1 kJ/pulse and beyond can be realized.

AB - Demonstration of a plasma-assisted, helix-based slow-wave 1.2 GHz oscillator (pasotron) operating at megawatt power levels with pulse durations of approximately 0.6 ms and generating about 0.6 kJ of microwave energy per pulse without pulse shortening is presented. This result was achieved in spite of significant voltage and current drop as well as the temporal evolution of the gas pressure in the interaction space during the rf pulse. The conditions for stable operation or mode hopping were studied and experimentally observed. The physical interpretation for this effect, which was caused by drop in the accelerating voltage due to limited energy storage in the power supply, is given. The results indicate that stable, high-efficiency, single mode operation of the pasotron with output energy of 1 kJ/pulse and beyond can be realized.

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DO - 10.1063/1.2344856

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JO - Applied Physics Letters

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Long-pulse operation of a megawatt-class plasma-assisted slow-wave oscillator

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