多路激光在高能同步辐射光源磁铁预准直实验单元中的应用  

Application of multi-path laser in magnet pre-collimation unit of high energy photon radiation source

作　　者：张泽斌 门玲鸰[2,3] 辛洪兵 董岚[2,3] 卢尚[2,3] 梁静 李波[2,3] 王小龙 罗涛 王铜[2,3] 马娜 何振强[2,3] 柯志勇 韩圆颖[2,3] 闫路平 ZHANG Zebin;MEN Lingling;XIN Hongbing;DONG Lan;LU Shang;LIANG Jing;LI Bo;WANG Xiaolong;LUO Tao;WANG Tong;MA Na;HE Zhenqiang;KE Zhiyong;HAN Yuanying;YAN Luping(School of Artificial Intelligence,Beijing Technology and Business University,Beijing 100048,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Spallation Neutron Source Science Center,Dongguan 523803,China)

机构地区：[1]北京工商大学人工智能学院,北京100048 [2]中国科学院高能物理研究所,北京100049 [3]散裂中子源科学中心,东莞523803

出　　处：《核技术》2021年第1期11-17,共7页Nuclear Techniques

基　　金：国家自然科学基金(No.12075264);国家自然青年科学基金(No.11605215)资助。

摘　　要：高能同步辐射光源(High Energy Photon Source,HEPS)储存环主体有288个预准直单元,由于设计单元中磁铁孔径变小,导致磁铁定位精度要求较以往项目高3~5倍。为提高磁铁预准直的精度,将多路激光干涉测量系统与磁铁预准直技术相结合,探索预准直实验中单元磁铁的多路激光高测量精度和高定位精度。模拟了两种常用多路激光布局方案对磁铁预准直精度的影响,然后利用MATLAB仿真软件,以被测目标点处标准差最小为目标对“三高一低”布局方案进行优化,最终采用4台Leica AT960激光跟踪仪,通过实验验证得到在12.1 m×5.97 m×3 m空间范围内被测目标点的标准差小于10μm,且精度对比单台激光跟踪仪有明显提高,基本满足实验工作条件,初步达到设计要求。[Background]The main body of the high energy photon source(HEPS)storage ring contains 288 precollimating units.Due to the smaller size of the magnets in the cells,the positioning accuracy of magnets is required to be 3~5 times higher than that in previous projects.[Purpose]This study aims to improve the accuracy of magnet pre-collimation and explore the high measurement accuracy and positioning accuracy of the unit magnet in the precollimation experiment.[Methods]The influence of multi-path laser layout schemes on the accuracy of magnetic precollimation was firstly simulated by combining the multichannel laser interferometry system with the magnet precollimation technology.Then,the simulation software MATLAB was used to optimize the layout scheme of"three high and one low"with the minimum standard deviation of the measured target point as the objective.Finally,four Leica AT960 laser trackers were employed for experimental verification of the measurement accuracy.[Results]The results show that the standard deviation of the measured target point is less than 10μm in the space range of 12.1 m×5.97 m×3 m,and the measurement accuracy is significantly improved compared with that of a single laser tracker.[Conclusions]The designed project meets the experimental working conditions and design requirements,it lays a foundation for subsequent beam center calibration and magnet calibration.

关 键 词：多路激光 高精度 磁铁预准直 优化 布局 

分 类 号：TL99[核科学技术—核技术及应用]