Optimization of single-step tapering amplitude and energy detuning for high-gain FELs  

作　　者：李和廷 贾启卡 

机构地区：[1]National Synchrotron Radiation Laboratory,University of Science and Technology of China

出　　处：《Chinese Physics C》2015年第1期109-112,共4页中国物理C（英文版）

基　　金：Supported by Major State Basic Research Development Program(2011CB808301);National Natural Science Foundation of China(11205156)

摘　　要：We put forward a method to optimize the single-step tapering amplitude of undulator strength and initial energy tuning of electron beam to maximize the saturation power of high gain free-electron lasers （FELs）, based on the physics of longitudinal electron beam phase space. Using the FEL simulation code GENESIS, we numerically demonstrate the accuracy of the estimations for parameters corresponding to the linac coherent light source and the Tesla test facility.We put forward a method to optimize the single-step tapering amplitude of undulator strength and initial energy tuning of electron beam to maximize the saturation power of high gain free-electron lasers （FELs）, based on the physics of longitudinal electron beam phase space. Using the FEL simulation code GENESIS, we numerically demonstrate the accuracy of the estimations for parameters corresponding to the linac coherent light source and the Tesla test facility.

关 键 词：step-tapering energy detuning high-gain FELs 

分 类 号：TN248[电子电信—物理电子学]