S~3FEL束流测试平台注入段废束桶束窗设计  

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

作　　者：张浩 赵峰 林涵文 李磊 黄礼明 尉伟 Zhang Hao;Zhao Feng;Lin Hanwen;Li Lei;Huang Liming;Wei Wei(Institute of Advanced Science Facilities,Shenzhen 518107,China)

机构地区：[1]深圳综合粒子设施研究院,广东深圳518107

出　　处：《强激光与粒子束》2025年第5期79-85,共7页High Power Laser and Particle Beams

基　　金：深圳市科技计划项目(JCYJ20220530140807017)。

摘　　要：深圳中能高重复频率X射线自由电子激光(S~3FEL)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S~3FEL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。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.

关 键 词：自由电子激光 高重频 束窗 真空 

分 类 号：TL503.1[核科学技术—核技术及应用]