BFEL激光能量的计算  

Laser energy calculation of BFEL facility

作　　者：戴建枰[1] 于莹[1] 

机构地区：[1]中国科学院高能物理研究所,北京100049

出　　处：《强激光与粒子束》2007年第5期737-740,共4页High Power Laser and Particle Beams

基　　金：中国科学院创新基金资助课题;国家863计划项目资助课题

摘　　要：为进一步提高BFEL的小信号增益和确定激光能量等性能参数,用定态和非定态程序对BFEL激光的能量进行了计算和分析。计算结果表明:采取适当措施,将电子束的发射度由50πmm·mrad降低到30πmm·mrad,电子束宏脉冲宽度由5.0μs增加到6.5μs,激光传输效率由40%增加到80%,BFEL的小信号增益将由16%增大到28%,输出激光的能量也将提高近一个量级。　 The laser energy is one of the key characteristics of Beijing Free Electron Laser（BFEL） facility. This paper calcu- lated the gain and the laser energy of BFEL with a steady-state code and a time-dependent code. The calculation shows that by adopting suitable measures such as decreasing the emittance of the electron beam from 50 πmm·mrad to 30 πmm·mrad, the small signal gain of BFEL will grow from 16% to 28%, and the laser energy will increase approximately one order.

关 键 词：BFEL 非定态程序 增益 激光能量 

分 类 号：TN248.6[电子电信—物理电子学]