Influence of the solenoid magnetic field on the self-modulation mechanism

doi:10.1017/S0263034620000178

	Influence of the solenoid magnetic field on the self-modulation mechanism
	Zhao, Xiao-ying 1; Yang, Yang-yang 1,2; Jia, Huan 1,2; Xie, Zai-peng 3; Qi, Xin 1,2; Wang, Zhi-jun 1,2; He, Yuan 1,2
刊名	LASER AND PARTICLE BEAMS
	2020-06-01
卷号	38 期号:2 页码:135-140
关键词	Particle beams particle-in-cell simulation plasma accelerator self-modulation mechanism wakefield
ISSN号	0263-0346
DOI	10.1017/S0263034620000178
通讯作者	Qi, Xin(qixin2002@impcas.ac.cn) ; Wang, Zhi-jun(wangzj@impcas.ac)
英文摘要	For the guarantee of the long-distance transport of the bunches of China Initiative Accelerator Driven System (CIADS), a new scheme is proposed that extra magnetic field is used in the accelerator-target coupling section before the windowless target to minimize the self-modulation (SM) mechanism. Particle-in-cell simulations are carried out to study the influence of the solenoidal magnetic field on the self-modulation mechanism when long proton bunches move in the background plasmas. The long proton bunches used in the simulations are similar to these in the linear accelerator of CIADS. It is found that the presence of the solenoidal magnetic field will significantly inhibit the self-modulation process. For the strong magnetic field, the longitudinal separation and transverse focusing of the long bunches disappear. We attribute these phenomena to the reason that the strong solenoidal magnetic field restricts the transverse movement of plasma electrons. Thus, there are not enough electrons around the bunch to compensate the space charge effect. Moreover, without transverse current, the longitudinal pinched effect disappears, and the long bunch can not be separated into small pulses anymore.
资助项目	National Natural Science Foundation of China[11775282,11525523] ; NSAF[U1730122]
WOS关键词	INTENSE ION-BEAMS ; CURRENT NEUTRALIZATION
WOS研究方向	Physics
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000544964000009
资助机构	National Natural Science Foundation of China ; NSAF
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/140310]
专题	中国科学院近代物理研究所
通讯作者	Qi, Xin; Wang, Zhi-jun
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 3.Hohai Univ, Dept Comp Sci & Technol, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xiao-ying,Yang, Yang-yang,Jia, Huan,et al. Influence of the solenoid magnetic field on the self-modulation mechanism[J]. LASER AND PARTICLE BEAMS,2020,38(2):135-140.
APA	Zhao, Xiao-ying.,Yang, Yang-yang.,Jia, Huan.,Xie, Zai-peng.,Qi, Xin.,...&He, Yuan.(2020).Influence of the solenoid magnetic field on the self-modulation mechanism.LASER AND PARTICLE BEAMS,38(2),135-140.
MLA	Zhao, Xiao-ying,et al."Influence of the solenoid magnetic field on the self-modulation mechanism".LASER AND PARTICLE BEAMS 38.2(2020):135-140.