【摘要】 SASEFEL是获得短波长X射线激光的最佳途径 ,SASEFEL的理论和实验研究是当前FEL研究的热点 .本文利用北京大学超导加速器装置提供的电子束 ,通过解析理论和 3D模型的数值模拟方法得到了实现SASEFEL的扭摆器的优化参数 ,并讨论了电子束的束流品质参数对SASEFEL的饱和长度和功率的影响 ,对加速器的设计和调试有重要的参考意义 .更多还原

【Abstract】 We present the layout of Peking University SASE FEL facility (PKU-FEL) to be driven by a superconducting accelerator currently under construction. PKU-FEL is a test facility to study the physical and technical issues of single pass SASE FEL. The study of theoretical model and numerical simulation for the design of PKU-FEL is described. Optimized hybrid planar undulator parameter are got in this paper. The influences of electron beam properties including peak current, emittance, energy spread and pulse duration are discussed. With the optimized parameter, PKU FEL is designed to get saturation at 7 micron with a 5-meter long hybrid undulator.更多还原