| Control of Beam Halo-Chaos Based on Self-Field-Intensity of Particle Beam |
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| 作者姓名： | 余海军 白龙 翁甲强 罗晓曙 |
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| 作者单位： | [1]Department of Physics, Huainan Normal University, Huainan 232001 [2]College of Science, China University of Mining and Technology, Xuzhou 221008 [3]College of Physics and Information Technology, Guangxi Normal University, Guilin 541004 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10247005, the Natural Science Foundation of the Higher Education Institutions of Anhui Province under Grant No KJ2007B187, and the Scientific Research Foundation of China University of Mining and Technology for Young Scholars under Grant No OK060119. |
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| 摘 要： | The KV beam through an axisymmetric periodic-focusing magnetic field is studied using the particle-core model. A new variable of the self-field-intensity of particle beam is selected, and an idea of self-field feedback controller is proposed based on the variable for controlling the halo-chaos. We perform multiparticle simulation to control the halo by using the self-field feedback controller. The numerical results show that the halo-chaos and its regeneration can be eliminated effectively, and that the density uniformity can be found at the centre of beam as long as an appropriate control method is chosen. The control method may be operated in the experiment, because field intensity measurement is easy.
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| 关 键 词： | 光束 光晕 光线强度 物理学 |
| 收稿时间： | 2007-08-27 |
Control of Beam Halo-Chaos Based on Self-Field-Intensity of Particle Beam |
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| YU Hai-Jun,BAI Long,WENG Jia-Qiang,LUO Xiao-Shu.Control of Beam Halo-Chaos Based on Self-Field-Intensity of Particle Beam[J].Chinese Physics Letters,2008,25(3):862-865. |
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| Authors: | YU Hai-Jun BAI Long WENG Jia-Qiang LUO Xiao-Shu |
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| Institution: | Department of Physics, Huainan Normal University, Huainan 232001College of Science, China University of Mining and Technology, Xuzhou 221008College of Physics and Information Technology, Guangxi Normal University, Guilin 541004 |
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| Abstract: | The KV beam through an axisymmetric periodic-focusing magnetic field is studied using the particle-core model. A new variable of the self-field-intensity of particle beam is selected, and an idea of self-field feedback controller is proposed based on the variable for controlling the halo-chaos. We perform multiparticle simulation to control the halo by using the self-field feedback controller. The numerical results show that the halo-chaos and its regeneration can be eliminated effectively, and that the density uniformity can be found at the centre of beam as long as an appropriate control method is chosen. The control method may be operated in the experiment, because field intensity measurement is easy. |
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| Keywords: | 05 45 Pq |
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