紧凑型X射线光源的共振注入方法

董自强; 邵琢瑕; 张通; 王琳; 陆亚林

doi:10.11884/HPLPB202537.240179

紧凑型X射线光源的共振注入方法

doi: 10.11884/HPLPB202537.240179

董自强^{1, 3,},
邵琢瑕^{1, 3},
张通^{1, 3, ,},
王琳²,
陆亚林^{1, 3}

1.
中国科学技术大学合肥微尺度物质科学国家研究中心，合肥 230026
2.
中国科学技术大学国家同步辐射实验室，合肥 230026
3.
中国科学技术大学先进光子科学技术安徽省实验室，合肥 230026

基金项目: 中国科学院科研仪器设备研制项目(ZDZBGCH2021001)

详细信息

作者简介:
董自强，dzq1992@ustc.edu.cn

通讯作者:
张　通，tongz@ustc.edu.cn。

中图分类号: TN248.6
计量
- 文章访问数: 61
- HTML全文浏览量: 34
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2024-08-27
- 修回日期: 2025-02-27
- 录用日期: 2025-02-27
- 网络出版日期: 2025-03-29
- 刊出日期: 2025-03-31

Resonant injection method for compact X-ray light source

Dong Ziqiang^{1, 3
,},
Shao Zhuoxia^{1, 3},
Zhang Tong^{1, 3
, ,},
Wang Lin²,
Lu Yalin^{1, 3}

1.
Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
2.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
3.
Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, China

摘要

摘要: 针对紧凑型X射线光源的一体化储存环注入系统这一核心问题开展研究。利用三维电磁场仿真软件CST与束流动力学模拟软件ELEGANT，重点对注入系统中的关键元件−扰动器进行多参数优化设计。研究了电子束流在半整数注入过程中的相空间演化规律，优化了注入元件的结构参数，针对紧凑型储存环优化了注入方案，计算结果显示扰动器相对于注入点的最佳摆放位置是150°～210°，电子束流注入位置相对于平衡轨道为30 mm，扰动器停止工作后电子振幅最小可缩小至3.4 mm。最后分析了紧凑型储存环采用多次多圈注入模式实现束流注入的可行性，计算结果显示扰动器工作频率为3 MHz时可获得最大注入效率。
- 电子储存环 /
- 半整数共振注入 /
- 扰动器 /
- 一体化磁铁 /
- 多次多圈注入
Abstract: This study focuses on the critical challenge of the integrated storage ring injection system in a compact X-ray light source. Utilizing the 3D electromagnetic field simulation software CST and the beam dynamics simulation software ELEGANT, we conducted multi-parameter optimization design for the key component of the injection system—the perturbator. The phase space evolution behavior of the electron beam during half-integer resonance injection processes was systematically investigated, leading to optimized structural parameters of injection components. For the compact storage ring, the optimized injection scheme demonstrates that the perturbator achieves optimal performance when positioned within an angular range of 150°–210° relative to the injection point, with the electron beam injection offset by 30 mm from the equilibrium orbit. After the perturbator stops working, the injected electron oscillation amplitude is minimized to 3.4 mm. Furthermore, the feasibility of implementing a multi-turn multi-pass injection scheme in the compact storage ring was analyzed. Numerical results indicate that maximum injection efficiency can be obtained when the kicker operates at a frequency of 3 MHz. These findings provide critical insights for enhancing beam stability and operational efficiency in compact synchrotron radiation facilities.
- electron storage ring /
- half-integer resonance injection /
- perturbator /
- integrated magnet /
- multi-turn injection

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图 1 扰动器开启时半整数共振注入过程示意图

Figure 1. Half-integer resonance injection process when perturbator is on

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图 2 扰动器物理模型

Figure 2. Perturbator physical model

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图 3 扰动器在径向产生的磁场分布

Figure 3. Magnetic field generated by perturbator on radial direction

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图 4 电子在相空间中的运动轨迹

Figure 4. Electron trajectory in phase space

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图 5 注入过程中电子的水平方向振荡包络变化

Figure 5. Electron horizontal envelope change during injection

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图 6 不同正弦信号频率下扰动器注入效率随电流值的相对变化

Figure 6. Relative variation of injection efficiency with current value under different sinusoidal signal frequencies

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图 7 储存环中扰动器相对于注入点的摆放位置

Figure 7. Position of the perturbator relative to the injection point in storage ring

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图 8 不同位置处扰动器注入效率随电流的相对变化

Figure 8. Relative variation of injection efficiency with current value under different position

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表 1 紧凑型储存环设计参数与注入束流参数

Table 1. Compact storage ring design parameters and injection beam parameters

focusing index n	center orbit magnetic field/T	center orbit radius R/m	beam energy/ MeV	beam transverse emittance	revolution period/ns	Twiss parameters	betatron tunes	radiation energy/eV
0.728	0.14445	0.15915	6	ε_x=5π mm·mrad， ε_y=5π mm·mrad	3.34	α_x=0， α_y=0， β_x=0.305 m， β_y=0.187 m γ_x=3.279 m⁻¹， γ_y=5.348 m⁻¹	Q_x=0.5215, Q_y=0.8532	0.0007

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