高能同步辐射光源低温波荡器的结构优化设计  

Research on structure design under cryogenic effect in cryogenic permanent magnet undulator of high energy photon source

作　　者：孙舒晨 陆辉华[1] 盛伟繁[1] 龚玲玲 杨宇峰[1] 李啸宇[1] 

机构地区：[1]中国科学院高能物理研究所,北京100049

出　　处：《低温与超导》2017年第12期11-14,24,共5页Cryogenics and Superconductivity

基　　金：国家重大科技基础设施建设项目(发改高技[2015]280号)

摘　　要：高能同步辐射光源验证装置(HEPS-TF)插入件系统目前正研制一台低温波荡器(CPMU)样机。为了保证辐射强度,必须严格控制磁场误差。低温波荡器由于其结构的特殊性,承载磁铁的真空内大梁工作在真空、低温环境。低温收缩引起的变形量会引起相位误差,从而降低同步辐射光的相干性。因此,控制和优化真空内大梁的变形是低温波荡器机械设计的重点。采用数值模拟计算的方法,对真空内大梁的变形量进行了分析和优化,最终通过结构优化和补偿机构的设计有效降低了其变形量,使之满足设计指标。A Cryogenic Permanent Magnet Undulator （CPMU） for the insertion device system of high energy photon source test facility （ HEPS - TF） was under the development. An in - vacuum girder is a key part which supports magnet and works at cryogenic and vacuum conditions. Deformation of an in - vacuum girder caused by cryogenic contractility will lead to magnetic er- ror directly. Magnetic field errors like phase error must be guaranteed to acquire high coherence synchrotron radiation photon. In this article, an in - vacuum girder deformation were calculated and discussed, its optimization and compensation were made to reduce and eliminate the deformations so as to obtain a high quality magnetic field.

关 键 词：同步辐射光源 插入件 低温波荡器 低温收缩 

分 类 号：TU318[建筑科学—结构工程]