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Emittance dilution due to the betatron mismatch in high-intensity hadron accelerators
Tang JY(唐靖宇); Tang, JY
2008
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
卷号595期号:3页码:561-567
通讯作者Inst High Energy Phys, CAS, Beijing 100049, Peoples R China
文章类型Article
摘要The importance of the betatron mismatch between two sections of an accelerator complex was recognized a long time ago. The mismatch together with the filamentation effect will result in a larger diluted beam emittance. However, the influence of the mismatch was underestimated largely in high-intensity hadron synchrotrons in the literature, as the rms emittance is used to represent the dilution. The dilution on the total emittance is significantly larger, which is of more importance in representing the beam loss in proton synchrotrons. This article points out the necessity of using the dilution factor of the total emittance together with the rms emittance in high-intensity hadron accelerators. A proof is given to show that the dilution factor of the rms emittance is the same for any initial beam distribution. The detailed beam distribution after the dilution is discussed for the initial uniform, Gaussian and parabolic distributions, and the numerical simulation results are presented. Examples and discussions about the betatron mismatch in the cases of injection, FODO channel transporting mixed H- and proton beams, fast-changing periodic focusing systems and proton linacs of a large tune depression are also presented. (C) 2008 Elsevier B.V. All rights reserved.
关键词Betatron mismatch Filamentation Emittance dilution Beam distribution Beam loss
学科领域Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
研究领域[WOS]Instruments & Instrumentation ; Nuclear Science & Technology ; Physics ; Spectroscopy ; Instruments & Instrumentation ; Nuclear Science & Technology ; Physics ; Spectroscopy
DOI10.1016/j.nima.2008.08.030
URL查看原文
语种英语
研究领域[WOS]Instruments & Instrumentation ; Nuclear Science & Technology ; Physics ; Spectroscopy ; Instruments & Instrumentation ; Nuclear Science & Technology ; Physics ; Spectroscopy
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
WOS记录号WOS:000261028600004
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被引频次:5[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/311005/237960
专题加速器中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Tang JY,Tang, JY. Emittance dilution due to the betatron mismatch in high-intensity hadron accelerators[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2008,595(3):561-567.
APA 唐靖宇,&Tang, JY.(2008).Emittance dilution due to the betatron mismatch in high-intensity hadron accelerators.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,595(3),561-567.
MLA 唐靖宇,et al."Emittance dilution due to the betatron mismatch in high-intensity hadron accelerators".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 595.3(2008):561-567.
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