FEL振荡器实验中电子束非理想入射和反射镜倾斜引起的三维效应模拟  

NUMERICAL SIMULATION OF 3 D EFFECTS CAUSED BY e BEAM DEVIATION AND OBLIQUE INJECTION OR MIRROR TILT IN FEL OSCILLATOR EXPERIMENT

作　　者：王泰春[1] 王元璋[1] 张治畴[1] 姚军[1] 

机构地区：[1]北京应用物理与计算数学研究所

出　　处：《强激光与粒子束》1995年第2期171-178,共8页High Power Laser and Particle Beams

摘　　要：用３－ＤＯＳＩＦＥＬ程序计算、分析了在自由电子激光振荡器实验中，电子束偏入射、斜入射和反射镜倾斜引起的各种三维效应对振荡器自由电子激光特性影响。AbstractThis paper analyzes 3 D effects,caused by deviation and oblique injection electronbeam or mirror tilt,on FEL quality by 3 DOSIFEL code in FEL oscillator experiment. When the centre of electron beam deviates the axis centre of wiggler,the gain g_n/% andpower P/MW of FEL oscillator will descend.If we demand that saturation power descends20% of the P_s=109.6MW,we can present deviation size a≈0.13cm of the x-direction,b≈0.053 of the v direction and a= b≈0.049cm of the x and y directions.Under the conditions of oblique electron beam,if we also demand that,we can presentoblique injection radian θ_x≈1. 2 × 10￣(-3) rad for the x-direction,θ_y≈2.1 × 10￣(-3)rad for they-direction,θ_x≈0.61 × 10￣(-3) rad and θ_y≈1.1 × 10￣(-3)rad for x and y-direction respectively. when the mirror tilts under the conditions of both y direction and θ_y>0, if we demandthat saturation power descends 20% of the P_s=123.8MW,we can present oblique radianθ_y≈8.5μrad.

关 键 词：自由电子激光 振荡器 电子束 非理想入射 

分 类 号：TN248.6[电子电信—物理电子学]