上海光源首批波荡器永磁块研制  

Magnet blocks for SSRF initial undulators

作　　者：何永周[1] 张继东[1] 周巧根[1] 钱珍梅[1] 黎阳[1] 

机构地区：[1]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》2010年第7期1627-1630,共4页High Power Laser and Particle Beams

基　　金：上海光源(SSRF)国家重大科学工程项目

摘　　要：介绍了上海光源2台混合型真空室内波荡器IVU25用636件Sm2Co17永磁块(规格为65 mm×25 mm×8.965 mm)和1台APPLE-Ⅱ型椭圆极化波荡器EPU100用668件NdFeB永磁块(规格为35 mm×35 mm×25 mm)的研制情况。指出了影响剩磁离散性、磁化偏角、机械尺寸精度等技术要求的基本因素,并对其原理进行了分析。研制的Sm2Co17和NdFeB永磁块的磁性能、磁场品质、机械尺寸精度等满足了上海光源首批波荡器插入件技术要求。Two in-vacuum undulators IVU25s and one elliptically polarized undulator EPU100 have been developed for the Shanghai Synchrotron Radiation Facility （SSRF）. Two IVU25s with the same hybrid design contain about 636 Sm2Co17 magnet blocks with the dimension of 65 mm×25 mm× 8. 965 mm. The EPU100 of the APPLE- Ⅱtype contains about 668 NdFeB magnet blocks with the dimension of 35 min×35 mm×25 mm. This paper presents the development of these magnet blocks, points out the basic factors which affect remanence distribution, magnetization deviation angle and mechanical dimension precision, and ana- lyzes the basic principles. The magnetic properties, magnetic field quality and mechanical dimension precision of the developed magnet blocks satisfy the specifications of SSRF initial undulators.

关 键 词：波荡器 永磁块 剩磁离散性 磁化偏角 机械尺寸精度 

分 类 号：TL5[核科学技术—核技术及应用] TM273[一般工业技术—材料科学与工程]