一种新型鼻锥结构速调管输入腔杂频振荡的抑制
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- 英文论文题名：Suppression of non-working mode excitation in an input cavity of a RKA with a new nose
- 论文作者：何琥 ; 雷禄容 ; 黄华 ; 陈昭福
- 英文论文作者：He Hu ; Huang Hua ; Lei Lu Rong ; Institute of Applied Electronics ; Science and Technology on High Power Microwave Laboratory ; CAEP
- 年：2016
- 作者机构：中国工程物理研究院应用电子学研究所高功率微波技术重点实验室;
- 论文关键词：新型鼻锥 ; 相对论速调管放大器 ; 开放腔 ; 杂模振荡 ; 3维粒子模拟
- 英文论文关键词：a new nose ; relativistic klystron amplifier ; an open cavity ; non-working mode self-excitation ; three dimensitional particle simulation
- 会议召开时间：2016-08-23
- 会议录名称：2016真空电子学分会第二十届学术年会论文集（上）
- 语种：中文
- 分类号：TN122;TN722
- 学会代码：ZKDZ
- 会议名称：2016真空电子学分会第二十届学术年会
- 会议地点：中国福建厦门
- 主办单位：中国电子学会真空电子学分会、微波电真空器件国家级重点实验室
- 学会名称：中国电子学会真空电子学分会
- 页数：6
- 文件大小：432k
- 原文格式：D
- 会议级别：全国
摘要
建立了S波段速调管放大器新型鼻锥结构径向注入输入腔的开放腔的三维模型,计算了开放腔的谐振频率和有载Q值。在输入腔后添加吸收介质,有效地抑制了输入腔杂频振荡。当注入微波为130k W时,束压束流为738k V,8.3k A的相对论强流电子束在输入腔后30cm处基波调制电流为320A,调制深度约3.85%。冷测谐振频率和有载Q值与计算结果基本一致。实验中调制束流脉宽达到200ns以上,没有脉冲缩短现象。
In this paper,three dimensional particle simulation of the input cavity for S-band high-current RKA is presented.First three-dimensional model of open cavity for an input cavity of a RKA with a new nose is established and the resonant frequency and loaded-Q of open cavity is calculated.By the use of an absorber,the problem of non-working mode self-excitation can be solved.With the input power is 130 k W,a beam of voltage 738 k V,current 8.3k A,the fundamental harmonic modulated current amplitude is 320 A,the modulation depth is about 3.85%.The resonant frequency and loaded-Q in the cold test are consistent with the simulation results.In the experiment,the width of the pulse is larger than 200 ns,no pulse shorten is found.
In this paper,three dimensional particle simulation of the input cavity for S-band high-current RKA is presented.First three-dimensional model of open cavity for an input cavity of a RKA with a new nose is established and the resonant frequency and loaded-Q of open cavity is calculated.By the use of an absorber,the problem of non-working mode self-excitation can be solved.With the input power is 130 k W,a beam of voltage 738 k V,current 8.3k A,the fundamental harmonic modulated current amplitude is 320 A,the modulation depth is about 3.85%.The resonant frequency and loaded-Q in the cold test are consistent with the simulation results.In the experiment,the width of the pulse is larger than 200 ns,no pulse shorten is found.
引文
[1]Friedman M,Krall J,Lau Y Y,et al.Externally modulated intense relativistic electron beams[J].J Appl Phys,1988,64(7):3353-3379.
[2]Lau Y Y,Friedman M,Krall J,Relativistic klystron amplifiers driven by modulated intense relativistic electron beams[J].IEEE Trans.Plasma Sci,1990,18(3):553-569.
[3]Barker R J,Schamiloglu E.High-power microwave sources and technologies[M].New York:IEEE Press,2001.
[4]黄华,孟凡宝,范植开,李正红.相对论速调管三轴提取腔的分析与设计[J].物理学报,2006,55(10),5344-5348.[Huang Hua,Meng F B,Fan Zh_K,Li Zh_H.Analysis and design of triaxial output cavity in a relativistic klystron amplifier,2006,55(10),5344-5348](in Chinese)
[5]雷禄容,范植开,黄华,等.S波段相对论速调管放大器输入腔的3维分析与模拟[J].强激光和粒子束,2008,20(3)455-459.[Lei L R,Fan ZH K,Huang H,et al.Three dimensional analysis and simulation of input cavity for S-band relativistic klystron amplifier.High Power Laser and Partical Beams2008,20(3),455-459](in Chinese).
[6]雷禄容,黄华,罗雄,等.速调管放大器大漂移管尺寸输入腔的3维分析与模拟[J].强激光和粒子束,2011,23(1)151-155.[Lei L R,Huang H,Luo X,et al.Three dimensional analysis and simulation of wide–aperture input cavities for klystron amplifier.High Power Laser and Partical Beams,2011,23(1),151-155](in Chinese).
[7]何琥.C波段磁绝缘振荡器开放腔的高频特性分析[J].强激光与粒子束,2006,18(1):101-104。[He H.Analysis of the High frequency characteristics of open cavity of MILO of C-Band.High Power Laser and Particle Beams,2006,18(1):101-104](in Chinese)
[8]Main W,Camel Y,Ogura K,et al.Electromagnetic Properties of open and closed overmoded slow-wave resonators for interaction with relativistic electron beams[J].IEEE Trans.Plasma Sci,1994,22(5):566-576.
[2]Lau Y Y,Friedman M,Krall J,Relativistic klystron amplifiers driven by modulated intense relativistic electron beams[J].IEEE Trans.Plasma Sci,1990,18(3):553-569.
[3]Barker R J,Schamiloglu E.High-power microwave sources and technologies[M].New York:IEEE Press,2001.
[4]黄华,孟凡宝,范植开,李正红.相对论速调管三轴提取腔的分析与设计[J].物理学报,2006,55(10),5344-5348.[Huang Hua,Meng F B,Fan Zh_K,Li Zh_H.Analysis and design of triaxial output cavity in a relativistic klystron amplifier,2006,55(10),5344-5348](in Chinese)
[5]雷禄容,范植开,黄华,等.S波段相对论速调管放大器输入腔的3维分析与模拟[J].强激光和粒子束,2008,20(3)455-459.[Lei L R,Fan ZH K,Huang H,et al.Three dimensional analysis and simulation of input cavity for S-band relativistic klystron amplifier.High Power Laser and Partical Beams2008,20(3),455-459](in Chinese).
[6]雷禄容,黄华,罗雄,等.速调管放大器大漂移管尺寸输入腔的3维分析与模拟[J].强激光和粒子束,2011,23(1)151-155.[Lei L R,Huang H,Luo X,et al.Three dimensional analysis and simulation of wide–aperture input cavities for klystron amplifier.High Power Laser and Partical Beams,2011,23(1),151-155](in Chinese).
[7]何琥.C波段磁绝缘振荡器开放腔的高频特性分析[J].强激光与粒子束,2006,18(1):101-104。[He H.Analysis of the High frequency characteristics of open cavity of MILO of C-Band.High Power Laser and Particle Beams,2006,18(1):101-104](in Chinese)
[8]Main W,Camel Y,Ogura K,et al.Electromagnetic Properties of open and closed overmoded slow-wave resonators for interaction with relativistic electron beams[J].IEEE Trans.Plasma Sci,1994,22(5):566-576.