Electron cloud instability simulation studies for BEPC II

	Electron cloud instability simulation studies for BEPC II
	Liu YD(刘瑜冬); Guo ZY(国智元); Qin Q(秦庆); Wang JQ(王九庆); Liu, YD; Guo, ZY; Qin, Q; Wang, JQ
刊名	HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
	2004
卷号	28 期号:11 页码:1222-1226
关键词	electron cloud coupled bunch instability single bunch instability chromaticity
通讯作者	CAS, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	Electron cloud instability (ECI) may take place in a storage ring when the machine is operated with multi-bunch positively charged beam. According to the actual shape of vacuum chamber in BEPC II, a computer simulation program has been developed. With the code I the electron density in the chamber with the different widths of antechamber and the different secondary electron yields, respectively, can be obtained. The possibility to put clearing electrodes in the normal chamber or ante-chamber to reduce the electron density in the central region of the chamber is also investigated. In the simulation, the coherent oscillation of bunches and the formation of electron cloud (EC) are tracked simultaneously. The sideband distribution and growth rate can be obtained through tracking and dealing the bunch oscillation amplitude with FIT. Based on the head-tail model, the single bunch instability induced by EC is also studied. By the simulation, for BEPC H the threshold density for the single bunch instability is estimated to be similar to 10(12)m(-3) and the restraining measures that might be adopted in BEPC 11 can control the EC density under the threshold. According to the simulation results, a relatively big positive chromaticity should be used to suppress the bunch blow up.
学科主题	Physics
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000225368400019
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239200]
专题	高能物理研究所_加速器中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Liu YD,Guo ZY,Qin Q,et al. Electron cloud instability simulation studies for BEPC II[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2004,28(11):1222-1226.
APA	刘瑜冬.,国智元.,秦庆.,王九庆.,Liu, YD.,...&Wang, JQ.(2004).Electron cloud instability simulation studies for BEPC II.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,28(11),1222-1226.
MLA	刘瑜冬,et al."Electron cloud instability simulation studies for BEPC II".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 28.11(2004):1222-1226.