| 高平均功率自由电子激光太赫兹源波荡器物理设计 |
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| 引用本文： | 闫陇刚, 邓德荣, 窦玉焕, 等. 高平均功率自由电子激光太赫兹源波荡器物理设计[J]. 强激光与粒子束, 2013, 25: 153-157. |
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| 作者姓名： | 闫陇刚 邓德荣 窦玉焕 黎明 杨兴繁 |
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| 作者单位： | 1.中国工程物理研究院 应用电子学研究所, 四川 绵阳 621 900;;;2.北京应用物理与计算数学研究所, 北京 1 00094 |
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| 摘 要： | 讨论了高平均功率自由电子激光太赫兹源波荡器的物理设计，在确定了波荡器周期、周期数、峰值磁场强度范围和调制参数范围等总体参数后，选用混合型Halbach结构为波荡器的基本结构，永磁块长宽高为8 cm1.3 cm6 cm，磁极长宽高为5 cm0.6 cm4.8 cm。波荡器工作在变间隙模式下，间隙为1.81~3.05 cm时，波荡器峰值磁场为0.529~0.184 T，好场区为3.02~2.13 cm。同时，考虑到波荡器磁场误差对自由电子激光的影响，提出了波荡器各参数误差，并对波荡器端部设计进行了重点讨论。
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| 关 键 词： | 自由电子激光 波荡器 太赫兹源 高平均功率 |
| 收稿时间： | 2012-10-18 |
| 修稿时间： | 2013-04-07 |
Physics design of undulator in high average power free electronic laser terahertz source |
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| Yan Longgang, Deng Derong, Dou Yuhuan, et al. Physics design of undulator in high average power free electronic laser terahertz source[J]. High Power Laser and Particle Beams, 2013, 25: 153-157. |
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| Authors: | Yan Longgang Deng Derong Dou Yuhuan Li Ming Yang Xingfan |
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| Affiliation: | 1. Institute of Applied Electronies,China Academy of Engineering Physics,Mianyang 621900,China;;;2. Institute of Applied Physics and Computational Mathematics,Beijing 100094,China |
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| Abstract: | The physics design of the undulator in high average power free electronic laser terahertz source is discussed. Hybrid Halbach structure is selected, after the period length, period quantity and peak magnetic field strength, etc. are fixed. The dimension of permanent magnet block is 8 cm1.3 cm6 cm, and the dimension of pole is 5 cm0.6 cm4.8 cm. The gap of the undulator is variable. While the gap range is 1.81-3.05 cm, the range of peak magnetic field strength is 0.529-0.184 T, and the length of good field area is 3.02-2.13 cm. Meanwhile, as the error of undulator magnetic field has effect on free electronic laser, the tolerances of undulator parameters are brought in, and the end design of the undulator is discussed at last. |
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| Keywords: | free electronic laser undulator terahertz source high average power |
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