| 94GHz缓变结构回旋管设计与数值模拟研究 |
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| 引用本文： | 雷朝军,喻胜,李宏福,刘迎辉,赵其祥.94GHz缓变结构回旋管设计与数值模拟研究[J].强激光与粒子束,2014,26(2):023002-187. |
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| 作者姓名： | 雷朝军 喻胜 李宏福 刘迎辉 赵其祥 |
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| 作者单位： | 1.中国人民武装警察部队学院 基础部, 河北 廊坊 065000; |
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| 基金项目： | 国家自然科学基金项目(11205026) |
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| 摘 要： | 通过分析广义传输线理论中的模式耦合系数,优化设计了一支94GHz光滑缓变结构回旋管,当电子注电压50kV,电流6A,横纵速度比1.4,工作磁场3.548 5T时,在频率94.099GHz处得到了41%互作用效率,约120kW的功率输出;与折变结构回旋管相比,缓变结构回旋管中的工作模式纯度提高约27dB,注波互作用效率提高约7%。基于自洽非线性理论计算的互作用效率与PIC模拟结果有较好的一致性。
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| 关 键 词： | 谐振腔 回旋管 模式竞争 耦合系数 |
| 收稿时间： | 2013-06-04; |
Design and numerical simulation of a 94 GHz gyrotron with gradually tapered cavity |
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| Lei Chaojun,Yu Sheng,Li Hongfu,Liu Yinghui,Zhao Qixiang.Design and numerical simulation of a 94 GHz gyrotron with gradually tapered cavity[J].High Power Laser and Particle Beams,2014,26(2):023002-187. |
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| Authors: | Lei Chaojun Yu Sheng Li Hongfu Liu Yinghui Zhao Qixiang |
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| Institution: | 1.The Chinese People’s Armed Police Force Academy,Langfang 065000,China;2.Terahertz Science and Technology Research Center,University of Electronic Science and Technology of China,Chengdu 610054,China |
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| Abstract: | Through analysing the coupling coefficient of the generalised telegraphist’s equations, an optimized 94 GHz gyrotron with gradually tapered cavity is designed. An output power of about 120 kW,corresponding to 41% efficiency, and an oscillation frequency of 94.099 GHz are achieved with a 50 kV, 6 A helical electron beam with a pitch angle of 1.4 at a guiding magnetic field of 3.548 5 T. Compared with the line-joint cavity, the purity of the operating mode is enhanced above 27 dB and the efficiency increases about 7% in the gyrotron with gradually tapered cavity. The efficiency of the beam-wave interaction calculated by the code based on the self-consistent nonlinear theory is in well accord with that simulated by PIC. |
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| Keywords: | gyrotron mode competition coupling coefficient |
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