A novel structure of multipole field magnets and their applications in uniformizing beam spot at target
文献类型：期刊论文
| 作者 | Guo Z(郭臻); Tang JY(唐靖宇) ; Yang Z(杨征); Guo, Z; Tang, JY; Yang, Z; Wang, XQ; Sun, B; Sun B(孙彪)
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| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
 |
| 出版日期 | 2012 |
| 卷号 | 691页码:97-108 |
| 关键词 | Multipole field magnet Symmetry of field distribution Shielding plates Beam spot uniformization Non-linear beam dynamics in synchrotrons |
| 英文摘要 | A novel structure of multipole field magnets is proposed, and it can provide any order either symmetric or anti-symmetric field distribution within a good-field region in a flat rectangular shape with relative field errors of about 1%. Some of these field distributions cannot be obtained by standard multipole magnets but are quite useful in some applications, thanks to the decoupling of the two halves of the magnets by a pair of shielding plates. In addition, the simplified structure compared with the standard one makes the magnet fabrication easier and cost effective. Two-dimensional magnetic field calculations for anti-symmetric sextupole, octupole, decapole and dodecapole fields show that the new types of multipole magnets have good field quality. Three-dimensional magnetic field calculations have confirmed the validity of the two-dimensional calculations. Symmetric field distributions by the simplified multipole field magnets have also been confirmed by two-dimensional field calculations. Two application examples by using numerical simulations are also given to show the effectiveness of simplified multipole field magnets in producing uniform-like beam spots at two different targets with different beam inputs. It is also shown that combinations of the lower order anti-symmetric field magnets - a merit of this magnet structure - are more advantageous than the traditional combination of octupole and dodecapole magnets in beam spot uniformization, besides with cheaper construction and operation costs. The applications of non-standard field distributions such as anti-symmetric sextupole and symmetric octupole field distributions in synchrotrons are to be exploited in the future. (c) 2012 Elsevier B.V. All rights reserved. |
| 学科主题 | Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy |
| 收录类别 | SCI |
| WOS记录号 | WOS:000309318400014 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/223840]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Guo Z,Tang JY,Yang Z,et al. A novel structure of multipole field magnets and their applications in uniformizing beam spot at target[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2012,691:97-108. |
| APA | 郭臻.,唐靖宇.,杨征.,Guo, Z.,Tang, JY.,...&孙彪.(2012).A novel structure of multipole field magnets and their applications in uniformizing beam spot at target.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,691,97-108. |
| MLA | 郭臻,et al."A novel structure of multipole field magnets and their applications in uniformizing beam spot at target".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 691(2012):97-108. |
入库方式： OAI收割
来源：高能物理研究所
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