| 双间隙耦合腔中自激振荡问题的分析和模拟 |
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| 引用本文： | 全亚民,丁耀根,王树忠.双间隙耦合腔中自激振荡问题的分析和模拟[J].强激光与粒子束,2008,20(10). |
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| 作者姓名： | 全亚民 丁耀根 王树忠 |
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| 作者单位： | 1. 中国科学院 电子学研究所, 北京 100190;2.中国科学院 研究生院, 北京 100039 |
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| 摘 要： | 建立了双间隙耦合腔中高次模式小信号电子电导计算模型，使用该模型和ISFIEL3D电磁场软件模拟的高次模式电场分布图分析了双间隙耦合腔中高次模式的自激性质。由3维粒子模拟软件对双间隙耦合腔自激模拟显示实际结构中存在高次模式3.17 GHz和3.99 GHz自激，验证了使用该方法分析双间隙耦合腔中高次模式自激性质的合理性。并通过对热测数据的分析说明实际结构中确实存在相应的模式自激并伴随吸收腔和耦合环发热现象。
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| 关 键 词： | 多注速调管 双间隙耦合腔 自激振荡 高次模式 电子电导 |
| 收稿时间： | 1900-01-01; |
Analysis and simulation of self-excitation in double gap coupling cavity |
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| QUAN Ya-min,DING Yao-gen,WANG Shu-zhong.Analysis and simulation of self-excitation in double gap coupling cavity[J].High Power Laser and Particle Beams,2008,20(10). |
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| Authors: | QUAN Ya-min DING Yao-gen WANG Shu-zhong |
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| Institution: | 1. Institute of Electronics, Chinese Academy of Sciences, P.O.Box 2652, Beijing 100190, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | The analytic expression of high order mode electronic conductance model in double gap coupling multi-beam klystron(MBK) cavity is presented. The oscillations of high order modes were studied by the model and field structures have been simulated with electromagnetic field software ISFEL3D. It is shown that there are self-excitation modes 2.9 GHz and 3.89 GHz in the double gap coupling MBK cavity, which is verified by the three-dimensional PIC simulation. In addition, the corresponding self-excitation modes’ frequencies are also given with the temperature increase of the absorbing cavity and coupling ring by the analysis of experimental results. |
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| Keywords: | Double gap coupling cavity Self-excitation High order mode Electronic conductance |
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