Collective effects near transition energy in the proton mode of HIAF/BRing
文献类型：期刊论文
| 作者 | Cai, F. C.1,3; Yang, J. C.1,3 ; Liu, J.1,3; Shen, G. D.1,3; Chen, X. Q.1,2,3; Xu, Z.1,3; Yin, D. Y.1,3; Cong, Y.1,3; Jin, P.1,3; Zhu, G. Y.1,3
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| 刊名 | JOURNAL OF INSTRUMENTATION
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| 出版日期 | 2020-12-01 |
| 卷号 | 15期号:12页码:11 |
| 关键词 | Accelerator modelling and simulations (multi-particle dynamics Beam dynamics Coherent instabilities single-particle dynamics) |
| ISSN号 | 1748-0221 |
| DOI | 10.1088/1748-0221/15/12/P12035 |
| 通讯作者 | Yang, J. C.(yangjch@impcas.ac.cn) |
| 英文摘要 | The High Intensity heavy-ion Accelerator Facility (HIAF) is under construction. The lattice of HIAF/BRing is the same for both heavy ion beams and proton beam. Since the proton beam will cross the transition energy during acceleration, a gamma(t) jump scheme with maximum Delta gamma(t) of 2 is designed to reduce the growth of momentum spread and influence of collective effects near transition. The broadband impedance of the ceramic-lined rings in the vacuum chamber has been significantly reduced by a 2 mu m-copper coating. Thus, the impedance model has been updated for analyzing collective effects in the BRing. The longitudinal collective effects can be compensated by the multiharmonic feedforward system. The transition energy crossing point should be optimized to reduce the bunch oscillations after transitions. In both two transverse planes, the normalized emittance growth given by the Simulation Platform for Collective Instabilities (CISP) are stopped by the broadband impedance near transition and there is no obvious transverse collective instability, which is quite different from the Vlasov results. More researches will be performed to find out the reason. |
| 资助项目 | National Key R&D Program of China[2019YFA0405400] ; National Natural Science Foundation of China[11825505] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G373] |
| WOS研究方向 | Instruments & Instrumentation |
| 语种 | 英语 |
| WOS记录号 | WOS:000608265500028 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Guangdong Innovative and Entrepreneurial Research Team Program |
| 源URL | [http://119.78.100.186/handle/113462/138229]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Yang, J. C. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Huizhou Res Ctr Ion Sci, Huizhou 516003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, F. C.,Yang, J. C.,Liu, J.,et al. Collective effects near transition energy in the proton mode of HIAF/BRing[J]. JOURNAL OF INSTRUMENTATION,2020,15(12):11. |
| APA | Cai, F. C..,Yang, J. C..,Liu, J..,Shen, G. D..,Chen, X. Q..,...&Zhou, X. H..(2020).Collective effects near transition energy in the proton mode of HIAF/BRing.JOURNAL OF INSTRUMENTATION,15(12),11. |
| MLA | Cai, F. C.,et al."Collective effects near transition energy in the proton mode of HIAF/BRing".JOURNAL OF INSTRUMENTATION 15.12(2020):11. |
入库方式： OAI收割
来源：近代物理研究所
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