Uncoupled achromatic condition of a dog-leg system with the presence of RF cavities

	Uncoupled achromatic condition of a dog-leg system with the presence of RF cavities
	Geng HP(耿会平); 郭臻;Geng, HP; Guo, Z
刊名	CHINESE PHYSICS C
	2014
卷号	38 期号:6 页码:67001
关键词	dog-leg system achromatic coupling transfer matrix medium energy
英文摘要	To merge the beam from either of the two injectors to the main linac, a dog-leg system will be employed in the second Medium Energy Beam Transport (MEBT2) line of the China ADS driving accelerator. The achromatic condition has to be guaranteed to avoid beam center excursion against energy jitter. RF cavities were found to be indispensable to control the bunch length growth in the dog-leg system of MEBT2. The full uncoupling between transverse and longitudinal plane is desired to minimize the growth of projected rms emittances. The uncoupled achromatic condition of this dogleg system with the presence of RF bunching cavities will be deduced using the transfer matrices method. It is found that, to fulfill the uncoupling condition, the distance between the bunching cavities is uniquely determined by the maximum energy gain of the RF cavities. The theoretical analysis is verified by the simulation code Trace Win. The space charge effect on the uncoupled achromatic condition and the beam emittance growth will also be discussed.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000337120100013
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224929]
专题	高能物理研究所_加速器中心
推荐引用方式 GB/T 7714	Geng HP,郭臻；Geng, HP,Guo, Z. Uncoupled achromatic condition of a dog-leg system with the presence of RF cavities[J]. CHINESE PHYSICS C,2014,38(6):67001.
APA	耿会平,郭臻；Geng, HP,&Guo, Z.(2014).Uncoupled achromatic condition of a dog-leg system with the presence of RF cavities.CHINESE PHYSICS C,38(6),67001.
MLA	耿会平,et al."Uncoupled achromatic condition of a dog-leg system with the presence of RF cavities".CHINESE PHYSICS C 38.6(2014):67001.