Long-pulse relativistic magnetron experiments

Michael R. Lopez; Ronald M. Gilgenbach; Yue Ying Lau; David W. Jordan; Mark W. Johnston; M. C. Jones; V. B. Neculaes; T. A. Spencer; John W. Luginsland; Michael D. Haworth; Raymond W. Lemke; David Price; Lars Ludeking

doi:10.1117/12.469838

10 June 2002 Long-pulse relativistic magnetron experiments

Michael R. Lopez, Ronald M. Gilgenbach, Yue Ying Lau, David W. Jordan, Mark W. Johnston, M. C. Jones, V. B. Neculaes, T. A. Spencer, John W. Luginsland, Michael D. Haworth, Raymond W. Lemke, David Price, Lars Ludeking

Author Affiliations +

Proceedings Volume 4720, Intense Microwave Pulses IX; (2002) https://doi.org/10.1117/12.469838
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

Research is underway on a 6-vane Titan Corp. L-Band relativistic magnetron operating at about 1 GHz. For equal power in both extraction waveguides, the peak microwave power of this device is between 200 MW and 300 MW. Microwave pulse shortening limits pulselengths to the range of 10-100 ns. Two cold cathodes designs were tested: emitting aluminum knob in the vane region with no endcap, and extended cathode with graphite fiber emission region in the vanes and endcap outside the vanes. With no endcap, the cathode exhibited endloss current fraction up to 50% of the total; with one endcap, the cathode reduced the endloss current fraction to as little as 12%. Both cathodes produced peak total- electronic efficiency in the range of 14% to 21%.

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Michael R. Lopez, Ronald M. Gilgenbach, Yue Ying Lau, David W. Jordan, Mark W. Johnston, M. C. Jones, V. B. Neculaes, T. A. Spencer, John W. Luginsland, Michael D. Haworth, Raymond W. Lemke, David Price, and Lars Ludeking "Long-pulse relativistic magnetron experiments", Proc. SPIE 4720, Intense Microwave Pulses IX, (10 June 2002); https://doi.org/10.1117/12.469838

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