Eliminating the microbunching-instability-induced sideband in a soft x-ray self-seeding free-electron laser

doi:10.1016/j.nima.2017.10.060

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Eliminating the microbunching-instability-induced sideband in a soft x-ray self-seeding free-electron laser
	Zhang, KQ ; Zeng, L ; Qi, Z ; Feng, C ; Wang, D
	2018
发表期刊	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN	0168-9002
卷号	882 页码:22-29
文章类型	期刊论文
摘要	Soft x-ray self-seeding has been proved to be a feasible method to improve the longitudinal coherence of high gain free-electron laser. However, a pedestal-like sideband in the spectrum has been observed in the experiment, which generally limits the purity of the radiation pulse and the user's application. The previous theoretical study indicates that the pedestal-like sideband is mainly induced by microbunching instability generated from LINAC. In this paper, three dimensional simulations have been performed to confirm the analytical results and show the formation process of the spectral sideband. A probable method is proposed to eliminate the pedestal-like sideband by simply inserting a magnetic chicane before the self-seeding FEL undulator. Theoretical and numerical simulations have been performed and the results show that the proposed method can efficiently eliminate the microbunching-instability-induced sideband in a soft x-ray self-seeding FEL. (C) 2017 Elsevier B.V. All rights reserved.
关键词	Generation Emission
DOI	10.1016/j.nima.2017.10.060
收录类别	SCI
语种	英语
WOS记录号	WOS:000418526200004
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/28999
专题	中科院上海应用物理研究所2011-2018年
作者单位	1.Zhang, KQ 2.Zeng, L 3.Qi, Z 4.Feng, C 5.Wang, D
推荐引用方式 GB/T 7714	Zhang, KQ,Zeng, L,Qi, Z,et al. Eliminating the microbunching-instability-induced sideband in a soft x-ray self-seeding free-electron laser[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2018,882:22-29.
APA	Zhang, KQ,Zeng, L,Qi, Z,Feng, C,&Wang, D.(2018).Eliminating the microbunching-instability-induced sideband in a soft x-ray self-seeding free-electron laser.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,882,22-29.
MLA	Zhang, KQ,et al."Eliminating the microbunching-instability-induced sideband in a soft x-ray self-seeding free-electron laser".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 882(2018):22-29.

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