X波段无导引磁场Cerenkov型振荡器的仿真研究
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- 英文论文题名：Simulation Investigation of an X-Band Cerenkov-Type Oscillator without Guiding Magnetic Field
- 论文作者：郭力铭 ; 舒挺 ; 李志强 ; 武大鹏 ; 张华 ; 巨金川
- 英文论文作者：GUO Li-ming ; SHU Ting ; LI Zhi-qiang ; WU Da-peng ; ZHANG Hua ; JU Jin-chuan ; College of Optoelectric Science and Engineering ; National University of Defense Technology
- 年：2014
- 作者机构：国防科学技术大学光电科学与工程学院;
- 论文关键词：高功率微波 ; 粒子模拟 ; Cerenkov型振荡器 ; 慢波结构 ; 仿真优化
- 英文论文关键词：high power microwave ; particle-in-cell simulation ; Cerenkov-type oscillator ; slow-wave-structure ; simulation optimization
- 会议召开时间：2014-07-21
- 会议录名称：2014年全国电磁兼容与防护技术学术会议论文集（上）
- 语种：中文
- 分类号：TN752
- 学会代码：WBXB
- 会议名称：2014年全国电磁兼容与防护技术学术会议
- 会议地点：中国湖南常德
- 主办单位：中国电子学会微波分会、中国工程物理研究院复杂电磁环境科学与技术重点实验室、总装备部电磁兼容及防护技术专业组、天线与微波技术重点实验室
- 学会名称：《微波学报》编辑部
- 页数：3
- 文件大小：490k
- 原文格式：D
- 会议级别：全国
摘要
利用2.5维粒子模拟软件Karat对一种无导引磁场X波段Cerenkov型高功率微波振荡器开展了仿真研究,利用冷腔色散曲线模型与Superfish电磁场分布模拟软件选择了工作点,设计了基本模型。在基本模型的基础上进行仿真优化,通过采用内外约束阴极环提高电子束质量,采用锥变型收集极优化器件Q值、增加模转效率、纯化输出微波模式,优化非均匀锥形慢波结构增强束波作用,最终使器件效率从17%优化到30%,输出功率达到1.8GW,输出微波模式为TEM模,频率9.1GHz,对应二极管工作电压620k V、电流9.4k A.
Through the 2.5D particle-in-cell simulation code Karat, an X-band Cerenkov-type oscillator without guiding magnetic field is investigated by us. The operating frequency of the oscillator is determined by the cold cavity dispersion curves and basic structure is built by the microwave distribution simulation software, Superfish. Based on the basic structure of the oscillator, the optimizations are worked by adopting the inner and outer constraining cathode circles to improve the transportation quality of the electron beam, tapering the collector to optimize the Q-factor and purify the microwave mode, and optimize the parameters of the nonuniform slow-wave-structure to enhance the beam-wave interaction. The efficiency of the oscillator is optimized to 30% from 15%, and the output wave power is 1.8GW with a frequency of 9.1GHz in the TEM mode. The corresponding diode voltage and beam current are 620 k V and 9.4k A, respectively.
Through the 2.5D particle-in-cell simulation code Karat, an X-band Cerenkov-type oscillator without guiding magnetic field is investigated by us. The operating frequency of the oscillator is determined by the cold cavity dispersion curves and basic structure is built by the microwave distribution simulation software, Superfish. Based on the basic structure of the oscillator, the optimizations are worked by adopting the inner and outer constraining cathode circles to improve the transportation quality of the electron beam, tapering the collector to optimize the Q-factor and purify the microwave mode, and optimize the parameters of the nonuniform slow-wave-structure to enhance the beam-wave interaction. The efficiency of the oscillator is optimized to 30% from 15%, and the output wave power is 1.8GW with a frequency of 9.1GHz in the TEM mode. The corresponding diode voltage and beam current are 620 k V and 9.4k A, respectively.
引文
[1]John A.Swegle,James W.Poukey,and Gordon T.Leifeste.Backward wave oscillators with rippled wall resonators:Analytic theory and numerical simulation[D].Phys.Fluids,1985,28(9):2882-2894.
[2]Zhu J,Shu T,Zhang J,Li G,Zhang Z,&Fan Y(2011).Experimental investigation of a Ka band high power millimeter wave generator operated at low guiding magnetic field.Physics of Plasmas(1994-present),18(5),053101.
[3]张军,钟辉煌.(2004).慢波结构的纵向谐振特性研究.微波学报,20(1),40-44.
[4]J.Zhang,Z.X.Jin,J.H.Yang,H.H.Zhong,T.Shu,J.D.Zhang,B.L.Qian,C.W.Yuan,Z.Q.Li,Y.W.Fan,S.Y.Zhou,and L.R.Xu.Recent Advance in Long-Pulse HPM Sources With Repetitive Operation in S-,C-,and X-Bands[J].IEEE Trans.Plasma Sci.2011,39,1438.
[5]E.M.Totmeninov,A.I.Klimov,and V.V.Rostov.Relativistic Cherenkov microwave oscillator without a guiding magnetic field[J].IEEE Tran.Plasma Sci.37(7),1242(2009).
[6]E.M.Totmeninov,S.A.Kitsanov,and P.V.Vykhodtsev,Repetitively Pulsed Relativistic Cherenkov Microwave Oscillator Without a Guiding Magnetic Field[J].IEEE Trans.Plasma Sci.39,1150(2011).
[7]R.J.Barker and E.Schamiloglu,High Power Microwave Sources and Technologies[M].New York,2001.
[2]Zhu J,Shu T,Zhang J,Li G,Zhang Z,&Fan Y(2011).Experimental investigation of a Ka band high power millimeter wave generator operated at low guiding magnetic field.Physics of Plasmas(1994-present),18(5),053101.
[3]张军,钟辉煌.(2004).慢波结构的纵向谐振特性研究.微波学报,20(1),40-44.
[4]J.Zhang,Z.X.Jin,J.H.Yang,H.H.Zhong,T.Shu,J.D.Zhang,B.L.Qian,C.W.Yuan,Z.Q.Li,Y.W.Fan,S.Y.Zhou,and L.R.Xu.Recent Advance in Long-Pulse HPM Sources With Repetitive Operation in S-,C-,and X-Bands[J].IEEE Trans.Plasma Sci.2011,39,1438.
[5]E.M.Totmeninov,A.I.Klimov,and V.V.Rostov.Relativistic Cherenkov microwave oscillator without a guiding magnetic field[J].IEEE Tran.Plasma Sci.37(7),1242(2009).
[6]E.M.Totmeninov,S.A.Kitsanov,and P.V.Vykhodtsev,Repetitively Pulsed Relativistic Cherenkov Microwave Oscillator Without a Guiding Magnetic Field[J].IEEE Trans.Plasma Sci.39,1150(2011).
[7]R.J.Barker and E.Schamiloglu,High Power Microwave Sources and Technologies[M].New York,2001.