| 电子在α-磁铁中的运动描述 |
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| 引用本文： | 肖效光,胡克松,李正红,黎明. 电子在α-磁铁中的运动描述[J]. 强激光与粒子束, 2003, 15(8): 817-820 |
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| 作者姓名： | 肖效光 胡克松 李正红 黎明 |
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| 作者单位： | 1. 聊城大学 物理科学与信息工程学院，山东 聊城 252059；2.中国工程物理研究院 应用电子学研究所，四川 绵阳 621900 |
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| 基金项目： | 国家863计划项目资助课题 |
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| 摘 要： | 由于α-磁铁具有能量选择和束团脉宽压缩的功能，它是RF-gun注入器中一个非常重要的组成部分。描述了α-磁铁的结构特点，讨论了电子在α-磁铁中运动的归一化方程。采用数值计算的方法给出了与电子运动能量无关的理想轨道运动方程，并导出了α-磁铁的主要性质。
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| 关 键 词： | α-磁铁 归一化运动方程 理想轨道 束团脉宽压缩 |
| 文章编号： | 1001-4322(2003)08-0817-04 |
| 收稿时间： | 2003-03-12 |
| 修稿时间： | 2003-03-12 |
Description of electrons motion in an alpha magnet |
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| xiao xiao-guang,hu ke-song,li zheng-hong,li ming. Description of electrons motion in an alpha magnet[J]. High Power Laser and Particle Beams, 2003, 15(8): 817-820 |
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| Authors: | xiao xiao-guang hu ke-song li zheng-hong li ming |
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| Affiliation: | 1. School of Physics Science and Information Technology Liaocheng University, Liaocheng 252059,China;2. Institute of Applied Electronics, CAEP，P.O.Box 919-1014, Mianyang 621900, China |
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| Abstract: | It is well known that the beam directly out of the thermionic cathode RF-gun is not suitable for injection into a linear accelerator section. This kind of injection would produce an accelerated beam with a large energy spread because of the large phase-spread the particles coming into the accelerator section would have in the absence of compression. Magnetic bunch compression is one solution to this problem, and is most suitable for RF gun. An alpha magnet is described, which is an asymmetric quadrupole. The scaled equation of motion and ideal trajectory in an alpha magnet are presented, and how the scaled form of the differential equation can be used to deduce some of the magnet's properties with numerical calculation method is shown. |
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| Keywords: | Alpha-magnet Scaled equation of motion Ideal trajectory Bunch compression |
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