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Emittance-dominated long bunches in dual harmonic RF system
An, SZ; Bongardt, K; Maier, R; Tang, JY; Zhang, TJ; Tang JY(唐靖宇)
2008
发表期刊CHINESE PHYSICS C
卷号32期号:1页码:#REF!
通讯作者An, SZ (reprint author), China Inst Atom Energy, Beijing 102413, Peoples R China.
文章类型Article
摘要The storage of long bunches for long time intervals needs flattened stationary buckets with a large bucket height. The longitudinal motion of the initially mismatched beam has been studied for both the single and dual harmonic RF systems. The RF amplitude is determined to be r.m.s wise matched. The bucket height of the single harmonic system is too small even for shorter bunch with only 20% increased energy spread. The Halo formation and even debunching can be seen after a few synchrotron periods for single particles with large amplitude. In the case of small energy spread for a cooled beam, Coulomb interaction cannot be ignored. The external voltage has to be increased to keep the r.m.s bunch length unchanged. The new voltage ratio R(N) simplifies physics for the emittance-dominated bunches with modest particle number N. For the single harmonic system, substantial amount of debunching occurs without increasing the external voltage, but very little if the RF amplitude is doubled. Results from the ORBIT tracking code are presented for the 1 GeV bunch in the HESR synchrotron, part of the GSI FAIR project.
关键词bucket height mismatch space charge effect debunching
学科领域Physics
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000253488900014
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225825
专题加速器中心
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GB/T 7714
An, SZ,Bongardt, K,Maier, R,et al. Emittance-dominated long bunches in dual harmonic RF system[J]. CHINESE PHYSICS C,2008,32(1):#REF!.
APA An, SZ,Bongardt, K,Maier, R,Tang, JY,Zhang, TJ,&唐靖宇.(2008).Emittance-dominated long bunches in dual harmonic RF system.CHINESE PHYSICS C,32(1),#REF!.
MLA An, SZ,et al."Emittance-dominated long bunches in dual harmonic RF system".CHINESE PHYSICS C 32.1(2008):#REF!.
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