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Matching of non-axisymmetric beams by solenoids in an LEBT
Li JH(李金海); Tang JY(唐靖宇); Li, JH; Tang, JY
2007
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
卷号574期号:2页码:#REF!
通讯作者Li, JH (reprint author), CAS, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Article
摘要In order to match a non-axisymmetric beam having different emittances in the two transverse planes from an H- ion source into an axisymmetric beam with the matched Twiss parameters for an RFQ, it is necessary to use three solenoids or more to have the adjustability during the operation. This takes the focusing and rotation coupling effects of solenoids. It is proven analytically that the minimum emittance for the final axisymmetric beam by solenoids reaches when the initial Twiss parameters in the two transverse planes are identical. To maintain the good matching when the beam conditions change, it is suggested to design the three solenoids with the same length, and vary any two of the solenoid fields in an anti-correlative way. The analytical results are also checked by the calculations with TRACE3D. It is found that the matching by solenoids is much less efficient in the presence of the linear space charge forces. (C) 2007 Elsevier B.V. All rights reserved.
关键词solenoid LEBT anti-correlated matching non-axisymmetric beam
学科领域Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
DOI10.1016/j.nima.2007.01.163
收录类别SCI
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
WOS记录号WOS:000246729800003
引用统计
被引频次:16[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/311005/227020
专题加速器中心
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GB/T 7714
Li JH,Tang JY,Li, JH,et al. Matching of non-axisymmetric beams by solenoids in an LEBT[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2007,574(2):#REF!.
APA 李金海,唐靖宇,Li, JH,&Tang, JY.(2007).Matching of non-axisymmetric beams by solenoids in an LEBT.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,574(2),#REF!.
MLA 李金海,et al."Matching of non-axisymmetric beams by solenoids in an LEBT".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 574.2(2007):#REF!.
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