| 上海软X射线自由电子激光装置束流分配系统设计 |
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| 引用本文： | Gu Duan,Wang Zhen,Huang Dazhang,Gu Qiang,Zhang Meng. 上海软X射线自由电子激光装置束流分配系统设计[J]. 强激光与粒子束, 2018, 30(4): 045101-1-045101-6. DOI: 10.11884/HPLPB201830.170303 |
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| 作者姓名： | Gu Duan Wang Zhen Huang Dazhang Gu Qiang Zhang Meng |
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| 作者单位： | 中国科学院 上海应用物理研究所, 上海 201800 |
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| 基金项目： | Natural Science Foundation of China11675248 |
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| 摘 要： | 束流分配系统是自由电子激光装置中至关重要的一部分，它可以将直线加速器产生的电子束团分配至不同的波荡器中。提出了一种基于上海软X射线自由电子激光装置的束流分配系统设计方案。针对该方案，详细介绍了三维从头至尾的束团跟踪模拟以及在传输过程中的束流动力学分析，模拟结果表明，该束流分配系统设计可以保证束流发射度增长小于8%，同时可以保证峰值电流、能散以及束团长度在经过该分配系统时未受到破坏。此外，针对束团在直线加速器中的微束团不稳定性和抖动也进行了分析。
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| 关 键 词： | 束流分配系统 阻抗壁效应 微束团不稳定性 抖动 |
| 收稿时间： | 2017-08-03 |
Switchyard design for Shanghai soft X-ray free electron laser facility |
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| Affiliation: | Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | In this article, a feasible switchyard design is proposed for the Shanghai soft X-ray Free Electron Laser (SXFEL) facility. In the proposed scheme, a switchyard is used to transport the electron beam to different undulator lines. Three-dimensional start-to-end simulations have been carried out to research the beam dynamic during transportation. The results show that the emittance of the electron beam increases less than 8%, meanwhile, the peak current, the energy spread and the bunch length are not spoiled as the beam passes through the switchyard. The microbunching instability of the beam and the jitter of the linear accelerator (linac) are analyzed as well. |
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