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Studies on Efficient Operation of an X-Band Oversized Slow-Wave HPM Generator in Low Magnetic Field

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6 Author(s)
Jun Zhang ; Coll. of Optoelectric Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China ; Hui-Huang Zhong ; Jin, Zhenxing ; Ting Shu
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The efficient operation of high-power microwave (HPM) sources using slow-wave structures (SWSs) in low magnetic field has been an attractive aim pursued by HPM researchers. This paper presents the latest experimental results of an X-band oversized SWS HPM source operating at low guiding magnetic field with both power and efficiency enhancements. Driven by an electron accelerator with diode voltages of 450-900 kV, the generator operated with the output microwave power ranging from 0.5 to 3 GW and the efficiency being kept at about 25%. The optimized magnetic field was in the 0.5-0.75 T range, depending on diode voltages. Without the employment of superconductive-solenoid system, a very stable 100-Hz repetitive operation with 1.5-GW output microwave power was realized in the 1-s-burst mode.

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Plasma Science, IEEE Transactions on  (Volume:37 ,  Issue: 8 )