Design study for the cascaded HGHG experiment based on the SDUV-FEL

作     者：FENG Chao ZHANG Meng LIN GuoQiang GU Qiang DENG HaiXiao CHEN JianHui WANG Dong ZHAO ZhenTang 

作者机构：Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China Graduate University of Chinese Academy of SciencesBeijing 100049China 

基　　金：supported by the National Natural Science Foundation of China (10935011) the National Basic Research Program of China (2011CB808300) 

出 版 物：《Chinese Science Bulletin》 (Chinese Science Bulletin)

年 卷 期：2012年第57卷第26期

页      码：3423-3429页

摘      要：Cascading stages of high-gain harmonic generation(HGHG) free electron laser(FEL) is a promising way to produce fully coherent X-ray *** a test facility for modern FEL R&D,the Shanghai deep ultraviolet FEL(SDUV-FEL) is now under upgrading for the cascading two stages of HGHG *** the energy of the electron beam is as low as about 185 MeV after upgrade,the total harmonic number of this two stages HGHG is only 2×2,and the wavelength of the final radiation is 196.5 nm which is the 4th harmonic of the 786 nm seed *** help of three-dimensional simulation codes,design studies on the FEL physics for the cascaded HGHG experiment are present based on the parameters of the upgraded SDUV-FEL *** is found from the simulation results that the part of the electron beam which has been used in the first stage can still generate powerful radiation in the radiator of the second stage,and this radiation will be difficult to be separated from the radiation generated by the fresh part of the electron *** overcome this problem,a novel method based on the energy spectrum of the electron beam is proposed in this paper to demonstrate the "fresh bunch" technique.

主 题 词：基础 实验 级联 设计 X射线辐射 自由电子激光 电子束 谐波产生 

学科分类：080901[080901] 0809[工学-计算机类] 08[工学] 080401[080401] 0804[工学-材料学] 0803[工学-仪器类] 

核心收录：

D　O　I：10.1007/s11434-012-5379-5

馆 藏 号：203115627...