摘要
上海光源(SSRF)属第三代同步辐射专用装置,现正在建设之中.能量为3.5GeV、流强为300mA的电子经过SSRF储存环直线节时,不可避免的与真空室内的残余气体产生气体韧致辐射.因气体韧致辐射的前冲性比较强,且辐射功率比较集中.所以了解直线节所产生的气体韧致辐射功率、能谱及辐射功率分布是非常必要的.采用多粒子输运代码Fluka对SSRF直线节产生的气体韧致辐射功率及韧致辐射光子产额等进行计算.通过与经验公式的对比及其他文献数据的比较,论证了本计算模型的合理性.
The Shanghai Synchrotron Radiation Facility(SSRF)is a third-generation synchrotron radiation light source with 3.5GeV in energy,which is composed of the linear accelerator,the booster and the storage ring.The storage ring provides 16 standard straight sections of 6.5m and 4 long straight sections of 12 meters. Gas Bremsstrahlung(GB)produced by the interaction of the stored beam with the residual gas molecules in straight section,which is so intense and has a very small angular that the GB spectra,the GB power and the GB power distribution should be known.The characters of GB are studied by means of Fluka Monte Carlo code.Our result shows agreement with those obtained by the experiential formulae.
关键词
气体韧致辐射
直线节
辐射功率
辐射长度
gas bremsstrahlung
straight section
radiation power
radiation length
