S<sup>3</sup>FEL束流测试平台注入段废束桶束窗设计

张浩; 赵峰; 林涵文; 李磊; 黄礼明; 尉伟

doi:10.11884/HPLPB202537.240365

S³FEL束流测试平台注入段废束桶束窗设计

doi: 10.11884/HPLPB202537.240365

深圳综合粒子设施研究院，广东深圳 518107

基金项目: 深圳市科技计划项目(JCYJ20220530140807017)

详细信息

作者简介:
张　浩，zhanghao@mail.iasf.ac.cn

通讯作者:
尉　伟，weiwei@mail.iasf.ac.cn。

中图分类号: TL503.1
计量
- 文章访问数: 115
- HTML全文浏览量: 61
- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2024-10-18
- 修回日期: 2025-01-13
- 录用日期: 2025-01-13
- 网络出版日期: 2025-02-12
- 刊出日期: 2025-03-31

Design of injector dump beam window for the electron beam test platform of S³FEL

Institute of Advanced Science Facilities, Shenzhen 518107, China

摘要

摘要: 深圳中能高重复频率X射线自由电子激光（S³FEL）的预研项目中的束流测试平台，将用于攻克高重复频率自由电子激光中的多项重大关键技术。对S³FEL束流测试平台中注入段废束桶束窗进行结构设计，结合电子束流参数设计了一种钎焊水冷铜窗。通过有限元分析方法对束窗进行热结构计算，分析了不同冷却通道和冷却流速下的温度、应力和变形。综合考虑冷却效果、流致振动和经济效益因素，最终选取了M型水冷通道和流速为1 m/s的束窗设计。并对该束窗处的真空分布进行计算，结果满足了设计要求，验证了设计的合理性，能够确保装置稳定可靠运行。
- 自由电子激光 /
- 高重频 /
- 束窗 /
- 真空
Abstract: The electron beam test platform, as a pre-research project for Shenzhen Superconducting Soft X-ray Free Electron Laser (S³FEL), will be used to overcome several major key technology challenges in high repetition frequency free electron laser. In this paper, the structural design of the injector dump beam window for the Electron Beam Test Platform of S³FEL is carried out, and a brazing water-cooled copper window is designed based on the electron beam parameters. The thermal structural calculation of the beam window is carried out using finite element analysis method, and the temperature, stress and deformation under different cooling channels and cooling water flow rates are analyzed. Considering the cooling effect, economic efficiency and flow vibration factors, the M-type cooling channel with the flow rate of 1 m/s is finally selected for the beam window. In addition, the vacuum distribution at the beam window is calculated, and all the results meet the design requirements, verifying the rationality of the design and ensuring the stable and reliable operation of the facility.
- free electron laser /
- high repetition frequency /
- beam window /
- vacuum

HTML全文

图 1 不同冷却通道的束窗

Figure 1. Beam window with different cooling channels

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图 2 不同冷却通道束窗的温度和应力

Figure 2. Temperature and stress of beam window with different cooling channels

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图 3 M型冷却通道束窗的温度、应力和变形分布

Figure 3. Temperature, stress and deformation distribution of beam window with M-type cooling channel

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图 4 冷却水流速为1 m/s的M型冷却通道束窗温度、应力和变形分布

Figure 4. Temperature, stress and deformation distribution of beam window with M-type cooling channel and cooling water flow rate 1 m/s

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图 5 束窗处的局部图和真空分布

Figure 5. Layout and vacuum distribution of beam window

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表 1 材料物性参数

Table 1. Physical parameters of materials

material	density/ (kg·m⁻³)	elastic modulus/ GPa	Poisson’s ratio	yield stress/ MPa	thermal conductivity/ (W·m⁻¹·K⁻¹)	thermal expansion coefficient/℃⁻¹
316L	7980	193.0	0.300	290	15	12.0×10⁻⁶
A5083	2660	71.0	0.330	145	117	23.0×10⁻⁶
Ti-6Al-4V	4430	113.8	0.360	880	6.7	8.6×10⁻⁶
Be	1844	303.0	0.100	240	216	12.0×10⁻⁶
OFHC	8940	115.0	0.343	340	391	17.7×10⁻⁶

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表 2 束窗材料物性参数

Table 2. Material physical parameters of beam window

material	density/ (kg·m⁻³)	melting point/℃	elastic modulus/ GPa	Poisson’s ratio	yield stress/ MPa	thermal conductivity/ (W·m⁻¹·K⁻¹)	thermal expansion coefficient/℃⁻¹
316L	7980	1375	193	0.300	290	15	12.0×10⁻⁶
OFHC	8940	1083	115	0.343	340	391	17.7×10⁻⁶

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表 3 材料放气率

Table 3. Material outgassing rates

material	conditions	outgassing rate^[19] /(Pa·L·s⁻¹·cm⁻²)	calculation outgassing rate/(Pa·L·s⁻¹·cm⁻²)
316L	20 h at 100 ℃	10⁻¹¹	1×10⁻⁹
copper	20 h at 100 ℃	10⁻¹⁰	1×10⁻⁸
copper (with Gaussian heat source )	20 h at 100 ℃	10⁻¹⁰	5×10⁻⁸

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参考文献(20)

[1]	Decking W, Abeghyan S, Abramian P, et al. A MHz-repetition-rate hard X-ray free-electron laser driven by a superconducting linear accelerator[J]. Nature Photonics, 2020, 14(6): 391-397. doi: 10.1038/s41566-020-0607-z
[2]	Pandey S, Bean R, Sato T, et al. Time-resolved serial femtosecond crystallography at the European XFEL[J]. Nature Methods, 2020, 17(1): 73-78. doi: 10.1038/s41592-019-0628-z
[3]	Halavanau A, Decker F J, Emma C, et al. Very high brightness and power LCLS-II hard X-ray pulses[J]. Journal of Synchrotron Radiation, 2019, 26(3): 635-646. doi: 10.1107/S1600577519002492
[4]	Zhang Baichao, Li Xiaoshen, Liu Qi, et al. High repetition-rate photoinjector laser system for S³FEL[J]. Frontiers in Physics, 2023, 11: 1181862. doi: 10.3389/fphy.2023.1181862
[5]	Xu Zhongmin, Zhang Weiqing, Yang Chuan, et al. Shape optimization design of the offset mirror in FEL-1 beamline at S³FEL[J]. Scientific Reports, 2023, 13: 9653. doi: 10.1038/s41598-023-36645-9
[6]	Huang Liming, E Dejun, Tao Kai, et al. Simulation study of coupled particle cascade and finite element analysis for beam dump of DALS[J]. Radiation Detection Technology and Methods, 2024, 8(2): 1254-1263. doi: 10.1007/s41605-023-00444-7
[7]	张浩, 黄礼明, 赵峰, 等. 一种高重频废束桶束窗的设计及热结构分析[J]. 强激光与粒子束, 2023, 35:034001 doi: 10.11884/HPLPB202335.220350 Zhang Hao, Huang Liming, Zhao Feng, et al. Design and thermal structure analysis of a dump beam window for high repetition frequency[J]. High Power Laser and Particle Beams, 2023, 35: 034001 doi: 10.11884/HPLPB202335.220350
[8]	马文静, 赵壮, 王思慧, 等. 合肥先进光源前端光子吸收器的设计及热分析[J]. 强激光与粒子束, 2022, 34:104007 doi: 10.11884/HPLPB202234.220057 Ma Wenjing, Zhao Zhuang, Wang Sihui, et al. Design and thermal analysis of front-end photon absorber at HALF[J]. High Power Laser and Particle Beams, 2022, 34: 104007 doi: 10.11884/HPLPB202234.220057
[9]	李勇军. 上海光源高热负载前端区的系统设计与研究[D]. 上海: 中国科学院上海应用物理研究所, 2016 Li Yongjun. Design and study of high heat load front-end at SSRF[D]. Shanghai: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2016
[10]	陈丽萍. 上海光源储存环光子吸收器结构设计与研制[J]. 真空科学与技术学报, 2009, 29(5):546-551 doi: 10.3969/j.issn.1672-7126.2009.05.18 Chen Liping. Photon absorber development for storage ring of Shanghai synchrotron radiation facility[J]. Chinese Journal of Vacuum Science and Technology, 2009, 29(5): 546-551 doi: 10.3969/j.issn.1672-7126.2009.05.18
[11]	聂小军, 刘磊, 康玲, 等. 一种废束站束窗结构设计与优化[J]. 强激光与粒子束, 2018, 30:105105 doi: 10.11884/HPLPB201830.180057 Nie Xiaojun, Liu Lei, Kang Ling, et al. Structure design and optimization of a dump beam window[J]. High Power Laser and Particle Beams, 2018, 30: 105105 doi: 10.11884/HPLPB201830.180057
[12]	Poo-arporn Y, Duangnil S, Bamrungkoh D, et al. Gas tungsten arc welding of copper to stainless steel for ultra-high vacuum applications[J]. Journal of Materials Processing Technology, 2020, 277: 116490. doi: 10.1016/j.jmatprotec.2019.116490
[13]	Böhlen T T, Cerutti F, Chin M P W, et al. The FLUKA code: developments and challenges for high energy and medical applications[J]. Nuclear Data Sheets, 2014, 120: 211-214. doi: 10.1016/j.nds.2014.07.049
[14]	马忠剑, 随艳峰, 王庆斌, 等. FLUKA程序在法拉第杯设计中的应用[J]. 强激光与粒子束, 2013, 25(1):207-210 doi: 10.3788/HPLPB20132501.0207 Ma Zhongjian, Sui Yanfeng, Wang Qingbin, et al. Application of Monte Carlo code FLUKA to design of Faraday cup[J]. High Power Laser and Particle Beams, 2013, 25(1): 207-210 doi: 10.3788/HPLPB20132501.0207
[15]	翟红雨, 程健, 陈银华, 等. 离子能量分析器测量特性的仿真研究[J]. 强激光与粒子束, 2020, 32:084002 doi: 10.11884/HPLPB202032.190459 Zhai Hongyu, Cheng Jian, Chen Yinhua, et al. Simulation study on measurement characteristics of ion energy analyzer[J]. High Power Laser and Particle Beams, 2020, 32: 084002 doi: 10.11884/HPLPB202032.190459
[16]	卢鹏, 潘艳秋, 俞路, 等. 固体激光微通道冷却器内流动特性的数值模拟[J]. 强激光与粒子束, 2014, 26:051008 doi: 10.11884/HPLPB201426.051008 Lu Peng, Pan Yanqiu, Yu Lu, et al. Numerical simulation of flow characteristic in solid-state laser microchannel cooler[J]. High Power Laser and Particle Beams, 2014, 26: 051008 doi: 10.11884/HPLPB201426.051008
[17]	Chai Shuo, Zhu Wanqian, Zhang Zhanfei, et al. Research and optimization of flow-induced vibrations in a water-cooled monochromator[J]. Review of Scientific Instruments, 2024, 95: 035124. doi: 10.1063/5.0191196
[18]	Notari L, Pasquali M, Carra F, et al. Materials adopted for particle beam windows in relevant experimental facilities[J]. Physical Review Accelerators and Beams, 2024, 27: 024801. doi: 10.1103/PhysRevAccelBeams.27.024801
[19]	Malyshev O B. Vacuum in particle accelerators: modelling, design and operation of beam vacuum systems[M]. Weinheim: Wiley-VCH, 2019.
[20]	王姣龙, 王国栋, 刘霄, 等. NEG泵抽气性能仿真模拟与测试系统设计[J]. 真空科学与技术学报, 2024, 44(2):139-145 Wang Jiaolong, Wang Guodong, Liu Xiao, et al. Simulation and design of test system for the pumping performance of NEG pump[J]. Chinese Journal of Vacuum Science and Technology, 2024, 44(2): 139-145