合肥先进光源注入非线性冲击磁铁设计研究  

Nonlinear kicker design and research for Hefei advanced light facility

作　　者：宋文彬 尚雷[1] 尚风雷[1] 许春宇 SONG Wenbin;SHANG Lei;SHANG Fenglei;XU Chunyu(National SynchrotronRadiationLaboratory,University ofScienceandTechnologyofChina,Hefei 230029,China)

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

出　　处：《核技术》2021年第6期35-40,共6页Nuclear Techniques

基　　金：科技部重点研发项目(No.2016YFA0402002);合肥先进光源预研项目资助。

摘　　要：合肥先进光源(Hefei Advanced Light Facility,HALF)是第四代衍射极限储存环型光源,其同步辐射光在真空紫外与软X射线波段。合肥先进光源的预研项目正在进行中,目前的注入系统拟采用非线性冲击磁铁的离轴注入方案,并处于重点考虑中。针对合肥先进光源项目,设计并研制了一种新型的适用于低发射度储存环的非线性冲击磁铁,对其进行了磁场的模拟,分析了其磁场对储存束流的影响以及陶瓷管内部镀膜对磁场场型的影响。加工了一套样机,同时对非线性冲击磁铁的磁场进行了实际测量,结果表明:实际磁场场型满足设计要求。[Background]Hefei advanced light facility(HALF)is a fourth-generation diffraction-limited storage ring(DLSR)in the range of the vacuum ultraviolet and soft X-ray region.Since 2017,HALF has been conducting pre-research and is considering off-axis injection scheme using nonlinear kicker.[Purpose]This study aims to propose a new kind of nonlinear kicker for low emissivity storage ring to achieve beam injection into low emissivity storage ring.[Methods]The magnetic cores made of Mn-Zn ferrite was adopted as the structure of the kicker.The theoretical analysis of the magnetic field in the central region of the kicker was carried out by using OPERA2D/3D.The magnetic field patterns with different coating thicknesses were simulated.A complete prototype was produced and the magnetic field measurement was done.[Results]The results show that the measured field in the center is about 3.6%of the peak filed strength,which is consistent well with the design requirements.[Conclusions]This work is of significance for beam injection of HALF.

关 键 词：衍射极限储存环 注入 非线性冲击磁铁 镀膜 磁场测量 

分 类 号：TL503.3[核科学技术—核技术及应用]