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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
2014
发表期刊CHINESE PHYSICS C
卷号38期号:6页码:67001
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.
关键词dog-leg system achromatic coupling transfer matrix medium energy
学科领域Physics
DOI10.1088/1674-1137/38/6/067001
收录类别SCI
WOS记录号WOS:000337120100013
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224929
专题加速器中心
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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.
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