Current Interruption at Powers up to 1 GW with Crossed-Field Tubes |
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Authors: | Harvey Robin J. Lutz Michael A. Gallagher Hayden E. |
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Affiliation: | Hughes Research Laboratories 3011 Malibu Canyon Road Malibu, California 90265; |
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Abstract: | This paper describes the current interruption and voltage holdoff capabilities of a wide range of crossed-field tubes (XFTs). The XFTs investigated have active electrode areas ranging from 96 to 8000 cm2 with mean diameters from 2 to 56 cm. For the larger XFTs, currents up to 10 kA have been interrupted at voltages up to 100 kV, corresponding to a switched power of 1 GW. Experiments have shown the peak interruptible current to vary linearly with tube radius. The mechanism responsible for the limitation may be related to the self-generated magnetic field, but other factors are also shown to play a role. |
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