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Particle Orbits in Quadrupole-Duodecapole Halo Suppressor
Li C(李超); Li, C; Xin, Q; Yuan, H; Lei, Y; Batygin, YK
2015
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
卷号770页码:169-176
通讯作者李超
摘要Dynamics of continuous space-charged-dominated beam propagating through a periodic quadrupole-duodecapole focusing channel is studied both numerically and analytically using test-particle-core model and Particle-In-Cell (PIC) simulation code TOPOPIC. The results of TOPOPIC indicate that with initially matched beam, utilization of quadrupole-duodecapole channel results in less beam emittance growth and fewer halo particles than that in a pure quadrupole channel. The Poincare section of plot obtained from the test-particle-core model is used to systematically determine the beam intensity dependent resonant dominated behavior of the test-particles, which reveals the mechanism of the halo suppression in quadrupole-duodecapole channel. Results of study show that, for appropriate field strength, the nonlinear duodecapole force removes the resonant structures clue to space charge. Motions of particles, originally trapped in the nonlinear resonant island or chaos region related to space charge, turn out to be along regular tori and these particles have less probability to get into beam halos. (C) 2014 Elsevier B.V. All rights reserved.
文章类型Article
关键词Halo suppression Space charge Focusing channel TOPOPIC
学科领域Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
DOI10.1016/j.nima.2014.09.085
收录类别SCI ; EI ; CA
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
WOS记录号WOS:000345855200023
引用统计
被引频次:3[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/311005/228152
专题加速器中心
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GB/T 7714
Li C,Li, C,Xin, Q,et al. Particle Orbits in Quadrupole-Duodecapole Halo Suppressor[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2015,770:169-176.
APA 李超,Li, C,Xin, Q,Yuan, H,Lei, Y,&Batygin, YK.(2015).Particle Orbits in Quadrupole-Duodecapole Halo Suppressor.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,770,169-176.
MLA 李超,et al."Particle Orbits in Quadrupole-Duodecapole Halo Suppressor".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 770(2015):169-176.
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