Study of the output pulse stability of a cascaded high-gain harmonic generation free-electron laser

被引：3
|
作者：
Wang, Zhen [1 ,2 ,3 ]
Feng, Chao [1 ,2 ]
Gu, Qiang [1 ,2 ]
Zhao, Zhentang [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Shanghai Sci Res Ctr, Shanghai 201204, Peoples R China
[3] Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 820卷
基金：
中国国家自然科学基金;
关键词：
Cascaded HGHG; Shot-to-shot fluctuation; Jitters; EXTREME-ULTRAVIOLET; X-RAYS; OPERATION; COHERENT; SACLA;
D O I：
10.1016/j.nima.2016.02.073
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Cascading stages of high-gain harmonic generation (HGHG) have been demonstrated to be a promising candidate for producing fully coherent soft X-ray radiation directly from UV seed sources. However, the large shot-to-shot output pulse energy fluctuation may still be a serious problem for its user applications. In this paper, we study the effects of various electron beam parameters jitters on the output pulse energy fluctuations of a two-stage HGHG. Theoretical calculations and intensive simulations have been performed and the results demonstrate that the relative timing jitter between the electron bunch and the seed laser pulse is mainly responsible for the large output pulse energy fluctuation. Several methods that may be helpful to improve the FEL stability have also been discussed. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：1 / 7
页数：7
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