2维全自动亥姆霍兹线圈磁块测量方法  

Magnet measurement using 2D automatic rotation Helmholtz coils

作　　者：陈念[1] 何永周[2] 任芳林[2] 钱珍梅[2] 张继东[2] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029 [2]中国科学院上海应用物理研究所,上海201800

出　　处：《强激光与粒子束》2012年第8期1941-1946,共6页High Power Laser and Particle Beams

基　　金：上海光源国家重大科学工程项目;国家自然科学基金(H175180)

摘　　要：在波荡器和扭摆器的研制过程中,为提高磁块的测量效率和精度,提出了2维全自动亥姆霍兹线圈磁块测量方法。通过理论推导得到仅采用2维全自动旋转而不需要3维旋转就可以实现磁块的全自动测量,降低了磁块全自动测量的实现难度。根据该方法的理论,已成功研制出一台2维全自动亥姆霍兹线圈测量装备,并在上海光源的磁块测量中使用。系统地给出2维全自动亥姆霍兹线圈磁块的测量理论和方法,并对测量误差进行了分析,该系统实现了磁块剩磁测量的高效率、高精度和高重复性,可以在30 s内完成单磁块的测量,重复性和精度均好于5×10-4。A magnet measurement method using 2D automatic rotation Helmholtz coils has been proposed to improve the measurement efficiency and accuracy of magnets in the research and development of undulators and wigglers.Theoretical analysis reveals that automatic magnet measurement can be achieved merely by 2D automatic rotation mechanism instead of 3D one,which can facilitate the automatic measurement.Such equipment has been developed successfully by using ingenuous 2D rotation mechanism,and has been applied in magnet measurement in SSRF（Shanghai Synchrotron Radiation Facility）.The measurement principle and method are given in detail in this work,and the measurement errors are analyzed.This equipment can accomplish measurement of single magnet in 30 s,with the repeatability and accuracy both above 0.05%.

关 键 词：亥姆霍兹线圈 永磁块 感应电动势 磁通量 剩磁 

分 类 号：TL62[核科学技术—核技术及应用]