合肥光源储存环聚焦模型标定  

Lattice model calibration of Hefei light source storage ring

作　　者：王琳[1] 宣科[1] 冯光耀[1] 吴丛凤[1] 张赫[1] 徐宏亮[1] 李为民[1] 

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：《强激光与粒子束》2006年第10期1687-1690,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目资助课题(10205014);中国科学院知识创新工程项目资助课题(KY4206)

摘　　要：描述了利用轨道响应矩阵拟合技术标定合肥光源储存环聚焦模型的过程及实验结果。通过响应矩阵分析，得到了合肥光源储存环弯铁边缘聚焦强度约为0．1mrad／A，场积分为0．62-0．63，考虑了四极铁聚焦强度的修正系数的影响，发现了原四极铁磁测数据中较大的系统偏差，分析结果和备用磁铁的磁场测量数据吻合良好。在此基础上建立的合肥光源储存环理论模型可以准确地描述实际储存环线性光学特性。To abstract linear optics of storage ring, response matrix fitting technique was developed as an advanced diagnostic tool of storage ring. The Matlab-based LOCO（Linear Optics of Closed Orbit） was a representative of response matrix fitting codes. Recently, in order to get accurate lattice model of storage ring, LOCO was applied to Hefei light source. In this paper, firstly the principle of response matrix fitting was briefly reviewed and the numerical simulation of application of LOCO to HLS storage ring and the simulation results were introduced. Through numerical simulation, the effect of BPM noise level on accuracy of fitting results was demonstrated. Finally, experimental results made at Hefei light source to calibrate focusing strength of quadrupoles and edge focusing strength of dipoles by LOCO were described. Some measures were taken to reduce systematic errors, and the fitting results agreed well with the magnetic measurement results of the backup quadrupole and dipole. Based on the fitting results, a lattice model of HLS storage ring was established and it could describe real storage ring more accurately.

关 键 词：电子储存环 磁格模型 轨道响应矩阵 边缘场积分 

分 类 号：TL593[核科学技术—核技术及应用]