Simulational Investigation of a High-Efficiency X-Band Magnetically  Insulated Line Oscillator

WANG Xiaoyu (王晓玉); FAN Yuwei (樊玉伟)

doi:10.1088/1009-0630/16/17/10/14

Plasma Science and Technology > 2015 > 17(10): 893-896. > DOI: 10.1088/1009-0630/16/17/10/14

WANG Xiaoyu (王晓玉), FAN Yuwei (樊玉伟). Simulational Investigation of a High-Efficiency X-Band Magnetically Insulated Line Oscillator[J]. Plasma Science and Technology, 2015, 17(10): 893-896. DOI: 10.1088/1009-0630/16/17/10/14

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Simulational Investigation of a High-Efficiency X-Band Magnetically Insulated Line Oscillator

College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China

Funds: supported by National Natural Science Foundation of China (No. 11075210) and the Special Financial Grant from the China Postdoctoral Science Foundation (No. 201104761)

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Received Date: September 25, 2014

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Abstract

Abstract

The magnetically insulated line oscillator (MILO) is a gigawatt-class, coaxial crossed-field microwave tube, which is at present a major hotspot in the field of high-power mi?crowaves (HPM) research. In order to improve the power conversion efficiency and eliminate or at least minimize anode plasma formation in the load region and radio frequency (RF) breakdown in the slow wave structure (SWS) section, an X-band MILO is presented and investigated nu?merically with KARAT code. The design idea is briefly presented and the simulation results are given and discussed. In the simulation, HPM is generated with peak power of 3.4 GW, maximum electric field of about 1 MV/cm, and peak power conversion efficiency of 14.0%, when the voltage is 559.1 kV and the current is 43.2 kA. The microwave frequency is pure and falls in the X-band of 9.0 GHz. The theoretical investigation and the simulation results are given to prove that the anode plasma formation and the RF breakdown can be effectively avoided or at least minimized, respectively.

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References

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