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储存环HIAF-SRing等时性模式的非线性磁场影响研究

葛文文 原有进 杨建成 吴波 李钟汕 陈瑞九 颜鑫亮 杜衡 李小妮

葛文文, 原有进, 杨建成, 吴波, 李钟汕, 陈瑞九, 颜鑫亮, 杜衡, 李小妮. 储存环HIAF-SRing等时性模式的非线性磁场影响研究[J]. 原子核物理评论, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147
引用本文: 葛文文, 原有进, 杨建成, 吴波, 李钟汕, 陈瑞九, 颜鑫亮, 杜衡, 李小妮. 储存环HIAF-SRing等时性模式的非线性磁场影响研究[J]. 原子核物理评论, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147
GE Wenwen, YUAN Youjin, YANG Jiancheng, WU Bo, LI Zhongshan, CHEN Ruijiu, YAN Xinliang, DU Heng, LI Xiaoni. Effects of Field Imperfections in the Isochronous Mode of the HIAF-Sring[J]. Nuclear Physics Review, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147
Citation: GE Wenwen, YUAN Youjin, YANG Jiancheng, WU Bo, LI Zhongshan, CHEN Ruijiu, YAN Xinliang, DU Heng, LI Xiaoni. Effects of Field Imperfections in the Isochronous Mode of the HIAF-Sring[J]. Nuclear Physics Review, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147

储存环HIAF-SRing等时性模式的非线性磁场影响研究

doi: 10.11804/NuclPhysRev.35.02.147
基金项目: 国家自然科学基金资助项目(11705253)
详细信息
    作者简介:

    葛文文(1987-),男,甘肃庆阳人,博士研究生,从事加速器物理研究;E-mail:gewenwen12@impcas.ac.cn

    通讯作者: 原有进,E-mail:yuanyj@impcas.ac.cn
  • 中图分类号: O571.53

Effects of Field Imperfections in the Isochronous Mode of the HIAF-Sring

Funds: National Natural Science Foundation of China (11705253)
  • 摘要: 高精度环形谱仪SRing(Spectrometer Ring)是强流重离子加速器装置(HIAF)的重要组成部分,其等时性模式为远离β稳定线的短寿命原子核质量和寿命的精确测量提供国际领先的科研条件。为了扩大短寿命原子核质量测量精度和范围,SRing等时性模式设计了两种光学:γt=1.43和1.67。质量分辨是衡量等时性储存环的最重要参数。二极磁铁的高阶场以及磁铁的边缘场能强烈地引起束流光学高阶畸变,对质量分辨产生影响,因此需要高极磁铁对其进行校正。介绍了SRing等时性模式的线性计算,对非线性磁场的影响进行了详细研究。应用六极磁铁和八极磁铁对非线性场和发射度的影响进行了校正后,离子的循环时间标准偏差σ(T)/T达到3.5×10-7,质量分辨△m/m达到1×106


    The isochronous mode of the Spectrometer Ring at the High Intensity heavy-ion Accelerator Facility (HIAF) project in China offers the capacity of measuring the mass and half-life of short-lived nuclides. The transition energy settings of the SRing are 1.43 and 1.67, which have been calculated in the same injection scheme. The resolution of mass or revolution time is the most important parameter of the isochronous mode design of a storage ring. The nonlinear magnetic field errors, including high-order magnet field of dipole, fringe field of magnets, have strongly effect to the resolution of revolution time. High-order corrections are required to improve the resolution of revolution time and mass. In this paper, the SRing linear isochronous optical were shown. The influence of nonlinear magnetic field errors on the revolution time resolving power were investigated. With 3 sextupole families and 1 octupole family corrections, the relative variation of revolution time reaches 4.6×10-7 with the momentum spread of ±0.2%. The relation of the relative standard revolution time deviation σ(T)/T and revolution turns was researched. With corrections of high-order isochronous condition and emittance influence by 3 sextupole families and 1 octupole family, one can reach a resolution of up to σ(T)/T=3.5×10-7, which corresponds to the mass resolution of △m/m=1×106.
  • [1] LUNNEY D, PEARSON J M, THIBAULT C, et al. Review of Modern Physics, 2003, 75(3):1021.
    [2] SCHEIDENBERGER C. Nuclear Physics, 2005, 751(1):209.
    [3] MYERS E G. International Journal of Mass Spectrometry, 2013, 349-350(5):107.
    [4] WANG M, AUDI G, KONDEV F G, et al. Chinese Phys. C, 2017, 41:030003.
    [5] LITVINOV Yu A, GEISSEL H, KNÖBEL R, et al. Acta Physica Polonica B, 2010, 41(2):511.
    [6] BOSCH F, LITVINOV YU A, STÖHLKER T, et al. Prog Part Nucl Phys, 2013, 73(6):84.
    [7] WOLLNIK H. Nucl Instr and Meth A, 1987, 258(3):289.
    [8] BLAUM K. Physics Reports, 2006, 425(1):1.
    [9] FRANZKE B, GEISSEL H, MÜNZENBERG G. Mass Spectrometry Reviews, 2008, 27:428.
    [10] GEISSEL H, LITVINOV Yu A, ATTALLAH F, et al. Nuclear Physics A, 2004, 746(40):150.
    [11] ZHANG Y H, XU H S, LITVINOV YU A, et al. Physical Review Letters, 2012, 109(10):102501.
    [12] YAN X L, XU H S, LITVINOV YU A, et al. Astrophysical Journal, 2013, 766(1):L8.
    [13] XU H S, ZHANG Y H, LITVINOV YU A. International Journal of Mass Spectrometry, 2013, 349-350(1):162.
    [14] STECK M, BELLER P, BECKERT K, et al. Nucl Instr Meth. A, 2004, 532:357.
    [15] NOLDEN F, BECKERT K, BELLER P, et al. Nucl Instr Meth. A, 2004, 532:329.
    [16] LITVINOV Yu A, GEISSEL H, NOVIKOV Y N, et al. Nuclear Physics A, 2003, 734(11):473.
    [17] HAUSMANN M, ATTALLAH F, BECKERT K, et al. Nucl Instr Meth. A, 2015, 446(3):569.
    [18] LITVINOV Yu A, GEISSEL H, RADON T, et al. Nuclear Physics, 2005, 756(1):3.
    [19] LITVINOV S, TOPREK D, WEICK H, et al. Nucl Instr Meth. A, 2013,724(10):20.
    [20] XU H S, ZHANG Y H, LITVINOV Yu A. International Journal of Mass Spectrometry, 2013, 349-350:162.
    [21] KNÖBEL R, DIWISCH M, GEISSEL H, et al. European Physical Journal A, 2016, 52(5):1.
    [22] XU X, ZHANG P, SHUAI P, et al. Physical Review Letters, 2016, 117(18):182503.
    [23] WU B, YANG J C, XIA J W, et al. Nucl. Instr. and Meth. in Phys.Res. A, 2017, 881:27.
    [24] LITVINOV S, DOLINSKⅡ A, WEICK H, et al. Proceedings of EPAC2006, 2006.
    [25] DOLINSKⅡ A, GEISSEL H, LITVINOV S, et al. Nucl Instr Meth B, 2008, 266(19-20):4579.
    [26] LITVINOV S, DIMOPOULOU C, DOLINSKⅡ A, et al. RUPAC2012, TUPPB037, 2012:400.
    [27] LITVINOV S, DOLINSKⅡ A, GORDA O, et al. Proceedings of Ipac, 2015, 64(7):153.
    [28] WOLLNIK H, HARTMANN B, BERZ M, et al. American Institute of Physics, 1988, 177(1):74.
    [29] BERZ M, HOFFMANN H C, WOLLNIK H. Nucl Instr Meth A, 1987, 258(3):364.
    [30] HARTMANN B, BERZ M, WOLLNIK H. Nucl Instr Meth A, 1991, 297(3):343.
    [31] LITVINOV S, TOPREK D, WEICK H, et al. Nucl Instr Meth A, 2013, 724(10):20.
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出版历程
  • 收稿日期:  2018-03-19
  • 修回日期:  2018-05-22
  • 刊出日期:  2018-06-20

储存环HIAF-SRing等时性模式的非线性磁场影响研究

doi: 10.11804/NuclPhysRev.35.02.147
    基金项目:  国家自然科学基金资助项目(11705253)
    作者简介:

    葛文文(1987-),男,甘肃庆阳人,博士研究生,从事加速器物理研究;E-mail:gewenwen12@impcas.ac.cn

    通讯作者: 原有进,E-mail:yuanyj@impcas.ac.cn
  • 中图分类号: O571.53

摘要: 高精度环形谱仪SRing(Spectrometer Ring)是强流重离子加速器装置(HIAF)的重要组成部分,其等时性模式为远离β稳定线的短寿命原子核质量和寿命的精确测量提供国际领先的科研条件。为了扩大短寿命原子核质量测量精度和范围,SRing等时性模式设计了两种光学:γt=1.43和1.67。质量分辨是衡量等时性储存环的最重要参数。二极磁铁的高阶场以及磁铁的边缘场能强烈地引起束流光学高阶畸变,对质量分辨产生影响,因此需要高极磁铁对其进行校正。介绍了SRing等时性模式的线性计算,对非线性磁场的影响进行了详细研究。应用六极磁铁和八极磁铁对非线性场和发射度的影响进行了校正后,离子的循环时间标准偏差σ(T)/T达到3.5×10-7,质量分辨△m/m达到1×106


The isochronous mode of the Spectrometer Ring at the High Intensity heavy-ion Accelerator Facility (HIAF) project in China offers the capacity of measuring the mass and half-life of short-lived nuclides. The transition energy settings of the SRing are 1.43 and 1.67, which have been calculated in the same injection scheme. The resolution of mass or revolution time is the most important parameter of the isochronous mode design of a storage ring. The nonlinear magnetic field errors, including high-order magnet field of dipole, fringe field of magnets, have strongly effect to the resolution of revolution time. High-order corrections are required to improve the resolution of revolution time and mass. In this paper, the SRing linear isochronous optical were shown. The influence of nonlinear magnetic field errors on the revolution time resolving power were investigated. With 3 sextupole families and 1 octupole family corrections, the relative variation of revolution time reaches 4.6×10-7 with the momentum spread of ±0.2%. The relation of the relative standard revolution time deviation σ(T)/T and revolution turns was researched. With corrections of high-order isochronous condition and emittance influence by 3 sextupole families and 1 octupole family, one can reach a resolution of up to σ(T)/T=3.5×10-7, which corresponds to the mass resolution of △m/m=1×106.

English Abstract

葛文文, 原有进, 杨建成, 吴波, 李钟汕, 陈瑞九, 颜鑫亮, 杜衡, 李小妮. 储存环HIAF-SRing等时性模式的非线性磁场影响研究[J]. 原子核物理评论, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147
引用本文: 葛文文, 原有进, 杨建成, 吴波, 李钟汕, 陈瑞九, 颜鑫亮, 杜衡, 李小妮. 储存环HIAF-SRing等时性模式的非线性磁场影响研究[J]. 原子核物理评论, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147
GE Wenwen, YUAN Youjin, YANG Jiancheng, WU Bo, LI Zhongshan, CHEN Ruijiu, YAN Xinliang, DU Heng, LI Xiaoni. Effects of Field Imperfections in the Isochronous Mode of the HIAF-Sring[J]. Nuclear Physics Review, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147
Citation: GE Wenwen, YUAN Youjin, YANG Jiancheng, WU Bo, LI Zhongshan, CHEN Ruijiu, YAN Xinliang, DU Heng, LI Xiaoni. Effects of Field Imperfections in the Isochronous Mode of the HIAF-Sring[J]. Nuclear Physics Review, 2018, 35(2): 147-153. doi: 10.11804/NuclPhysRev.35.02.147
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