摘要
合肥国家同步辐射实验室正在开展储存环相干谐波自由电子激光研究,并对原来的光学速调管进行了改造。磁场的垫补和测量方法由原来的整体测量改为分段进行,垫补的使用使各段积分场及位相误差都尽可能小。详述了合肥储存环的光学速调管辐射段磁场垫补的三种方式,测量了垫补前后不同间隙下积分场分布、位相误差及横向均匀度,各项指标都达到了要求。同样的方法将用于色散段和调制段磁场垫补与测量中,为相干谐波自由电子激光研究提供实验保障。
This paper expatiates on the methods marginal, horizontal and vertical shimming magnet block of OK radiator in Hefi storage ring. By means of shimming,the filed integral and phase error can be reduced as much as possible. All the measurement results of magnetic field of optical klystron before and after shimming are given, including the distribution of field integral and phase error on axis, field integral and RMS phase error for different gaps and transverse distribution of field integral. The results reveal that the radiator can meet the requirement of coherent harmonic generation FEL experimental. The same method will be used in the shimming and measurement of modulator and dispersion section of optical klystron.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2003年第4期401-404,共4页
High Power Laser and Particle Beams
基金
国家973专项基金(2001CCB01000)资助课题
国家863计划项目资助课题。
