| 储存环超周期结构共振带的形成机制及应用 |
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| 引用本文： | 方守贤,秦庆.储存环超周期结构共振带的形成机制及应用[J].中国物理 C,2006,30(9):880-887. |
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| 作者姓名： | 方守贤 秦庆 |
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| 作者单位： | 中国科学院高能物理研究所,北京100049 |
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| 基金项目： | We would like to thank Dr. H. Zhang and Prof W.M. Li from NSRL. China, for useful discussions. Special thanks are given to Prof. A. Chao from SLAC, USA, for his help |
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| 摘 要： | 将环形加速器磁聚焦结构设计中, 传统的聚焦和散焦磁铁强度空间中的稳定图方法, 应用到更复杂的含有两个以上磁场梯度变量的超周期结构中, 从而更深入地理解结构共振的形成机制和隐含的物理意义. 利用文中给出的方法, 可以指导环形加速器磁聚焦结构的工作点选择. 对于一个给定的磁聚焦结构, 由于结构共振而导致的束流包络函数变化的不对称性, 则是其动力学孔径不对称的一个重要原因. 作为实例, 给出了在实际机器上的具体应用, 同时给出了动力学孔径的模拟计算结果.
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| 关 键 词： | 结构共振带 超周期 储存环 动力学孔径 |
| 收稿时间： | 2006-02-07 |
| 修稿时间： | 2006-02-072006-03-06 |
Mechanism and Application of the Super-Periodic Structural Resonance in Storage Rings |
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| FANG Shou-Xian,QIN Qing.Mechanism and Application of the Super-Periodic Structural Resonance in Storage Rings[J].High Energy Physics and Nuclear Physics,2006,30(9):880-887. |
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| Authors: | FANG Shou-Xian QIN Qing |
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| Institution: | Institute of High Energy Physics, CAS, Beijing 100049, China |
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| Abstract: | The traditional stability diagram for lattice design described in the space of the gradients of a focusing and a defocusing magnet is extended to study more complicated cases, in which the basic cell included in the super-periodic structure has more than two gradients as variables. With the method developed here, it is easy to understand the mechanism and the physics hidden behind these structural resonances and the method can be used to guide the choice of the working points of a given lattice. Applications on the real machines are given as examples, with the simulation results on dynamic aperture. |
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| Keywords: | structural resonance stopband super-period storage ring dynamic aperture |
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