Transverse to longitudinal phase space coupling in an electron beam for suppression of microbunching instability

doi:10.1103/PhysRevAccelBeams.19.100701

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Transverse to longitudinal phase space coupling in an electron beam for suppression of microbunching instability
	Huang, DZ; Feng, C; Deng, HX; Gu, Q; Zhao, ZT; Feng, C (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
	2016
发表期刊	PHYSICAL REVIEW ACCELERATORS AND BEAMS
ISSN	2469-9888
卷号	19 期号:10 页码:-
文章类型	期刊论文
摘要	The microbunching instability developed during the beam compression process in the linear accelerator (LINAC) of a free-electron laser (FEL) facility has always been a problem that degrades the lasing performance, and even no FEL is able to be produced if the beam quality is destroyed too much by the instability. A common way to suppress the microbunching instability is to introduce extra uncorrelated energy spread by the laser heater that heats the beam through the interaction between the electron and laser beam, as what has been successfully implemented in the Linac Coherent Light Source and Fermi@Elettra. In this paper, a simple and effective scheme is proposed to suppress the microbunching instability by adding two transverse gradient undulators (TGU) before and after the magnetic bunch compressor. The additional uncorrelated energy spread and the density mixing from the transverse spread brought up by the first TGU results in significant suppression of the instability. Meanwhile, the extra slice energy spread and the transverse emittance can also be effectively recovered by the second TGU. The magnitude of the suppression can be easily controlled by varying the strength of the magnetic fields of the TGUs. Theoretical analysis and numerical simulations demonstrate the capability of the proposed technique in the LINAC of an x-ray free-electron laser facility.
DOI	10.1103/PhysRevAccelBeams.19.100701
收录类别	SCI
语种	英语
WOS记录号	WOS:000384480400001
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/26668
专题	中科院上海应用物理研究所2011-2018年
通讯作者	Feng, C (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
推荐引用方式 GB/T 7714	Huang, DZ,Feng, C,Deng, HX,et al. Transverse to longitudinal phase space coupling in an electron beam for suppression of microbunching instability[J]. PHYSICAL REVIEW ACCELERATORS AND BEAMS,2016,19(10):-.
APA	Huang, DZ,Feng, C,Deng, HX,Gu, Q,Zhao, ZT,&Feng, C .(2016).Transverse to longitudinal phase space coupling in an electron beam for suppression of microbunching instability.PHYSICAL REVIEW ACCELERATORS AND BEAMS,19(10),-.
MLA	Huang, DZ,et al."Transverse to longitudinal phase space coupling in an electron beam for suppression of microbunching instability".PHYSICAL REVIEW ACCELERATORS AND BEAMS 19.10(2016):-.

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