ISSN 0253-2778

CN 34-1054/N

Open AccessOpen Access JUSTC Original Paper

Design of a novel simplified dodecapole field magnet

Cite this:
https://doi.org/10.3969/j.issn.0253-2778.2017.06.003
  • Received Date: 05 January 2016
  • Rev Recd Date: 12 June 2016
  • Publish Date: 30 June 2017
  • Beam distribution with the regular and homogeneous form on spallation target or beam dump is an imperious demand for spallation neutron source (SNS), accelerator driven sub-critical system (ADS), and so on. Nowadays, adopting nonlinear antisymmetric high order field is very infusive for distribution transformation of beam. Here, a simplified dodecapole field magnet (SDFM), well focusing particles in beam halo to inner layer of beam halo or beam core, was introduced. Combining SDFM with antisymmetric sextupole, octupole or decapole magnet can theoretically get approximate uniformly distributed round beam with slightly larger size. The conceptual design, physics structural and its manufacturing method of SDFM was presented.
    Beam distribution with the regular and homogeneous form on spallation target or beam dump is an imperious demand for spallation neutron source (SNS), accelerator driven sub-critical system (ADS), and so on. Nowadays, adopting nonlinear antisymmetric high order field is very infusive for distribution transformation of beam. Here, a simplified dodecapole field magnet (SDFM), well focusing particles in beam halo to inner layer of beam halo or beam core, was introduced. Combining SDFM with antisymmetric sextupole, octupole or decapole magnet can theoretically get approximate uniformly distributed round beam with slightly larger size. The conceptual design, physics structural and its manufacturing method of SDFM was presented.
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    GUDOWSKI W. Accelerator-driven transmutation projects: The importance of nuclear physics research for waste transmutation [J]. Nuclear Physics A, 1999, 654(1-2): 436-457.
    [2]
    RUBBIA C, ALEIXANDRE J, ANDRIAMONJE S. A European roadmap for developing accelerator driven systems (ADS) for nuclear waste incineration [R]. ROMA: ENEA, 2001.
    [3]
    LI Zexia, LIU Xiaoping, ZHU Xiangli, et al. International development trend analysis of accelerator-driven sub-critical system [J]. Science Focus, 2011, 6(3):32-44.
    [4]
    MEOT F, ANIEL T. Principles of the non-linear tuning of beam expanders [J]. Nuclear Instruments and Methods in Physics Research Section A, 1996, 379(2): 196-205.
    [5]
    YURI Y, MIYAWAKI N, KAMIYA T, et al. Uniformization of the transverse beam profile by means of nonlinear focusing method [J]. Physical Review Special Topics: Accelerators and Beams, 2007, 10(10): 104001.
    [6]
    TSOUPAS N, AHRENS L, BELLAVIA S, et al. Uniform beam distributions at the target of the NASA Space Radiation Laboratory’s beam line [J]. Physical Review Special Topics: Accelerators and Beams, 2007, 10(2): 024701.
    [7]
    TANG J Y, LI H H, AN S Z, et al. Distribution transformation by using step-like nonlinear magnets [J]. Nuclear Instruments and Methods in Physics Research Section A, 2004, 532(3): 538-547.
    [8]
    TANG J Y, WEI G H, ZHANG C. Step-like field magnets to transform beam distribution at the CSNS target [J]. Nuclear Instruments and Methods in Physics Research Section A, 2007, 582(2): 326-335.
    [9]
    TANG J Y, FENG G Y, LIU G W. Design and prototyping of a step-like field magnet [J]. IEEE Transactions on Applied Superconductivity, 2010, 20(3): 1041-1044.
    [10]
    GUO Z, TANG J Y, YANG Z, et al. A novel structure of multipole field magnets and their applications in uniformizing beam spot at target [J]. Nuclear Instruments and Methods in Physics Research Section A, 2012, 691(16):97-108.
    [11]
    TANG Jingyu, YANG Zheng, WEI Guohui, et al. Accelerator to target interface problems with high power beams [C]// Workshop on Nonlinear Beam Expander Systems in High-Power Accelerator Facilities. Aarhus, Denmark: Aarhus University, 2012.
    [12]
    CHENG X, PETTAN C, KNEBEL J U, et al. Experimental and numerical studies on thermal-hydraulics of spallation targets [C]// Emerging Nuclear and Transmutation Systems: Core Physics and Engineering Aspects. Vienna: International Atomic Energy Agency, 2003: 308-325.
    [13]
    BIANCHI F, FERRI R, MOREAU V. Thermo-hydraulic analysis of the windowless target system[J]. Journal of Nuclear Engineering and Design, 2008, 238(8): 2135-2145.
    [14]
    王相綦,罗焕丽,李想. 简化十二极场磁铁装置及其制造方法: ZL201210334199.2 [P]. 2015-01-21.
    [15]
    王相綦,罗焕丽,黄维. 一种圆孔径反对称简化六极场磁铁装置及其制造方法:ZL201310259701.2 [P]. 2015-10-21.
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Catalog

    [1]
    GUDOWSKI W. Accelerator-driven transmutation projects: The importance of nuclear physics research for waste transmutation [J]. Nuclear Physics A, 1999, 654(1-2): 436-457.
    [2]
    RUBBIA C, ALEIXANDRE J, ANDRIAMONJE S. A European roadmap for developing accelerator driven systems (ADS) for nuclear waste incineration [R]. ROMA: ENEA, 2001.
    [3]
    LI Zexia, LIU Xiaoping, ZHU Xiangli, et al. International development trend analysis of accelerator-driven sub-critical system [J]. Science Focus, 2011, 6(3):32-44.
    [4]
    MEOT F, ANIEL T. Principles of the non-linear tuning of beam expanders [J]. Nuclear Instruments and Methods in Physics Research Section A, 1996, 379(2): 196-205.
    [5]
    YURI Y, MIYAWAKI N, KAMIYA T, et al. Uniformization of the transverse beam profile by means of nonlinear focusing method [J]. Physical Review Special Topics: Accelerators and Beams, 2007, 10(10): 104001.
    [6]
    TSOUPAS N, AHRENS L, BELLAVIA S, et al. Uniform beam distributions at the target of the NASA Space Radiation Laboratory’s beam line [J]. Physical Review Special Topics: Accelerators and Beams, 2007, 10(2): 024701.
    [7]
    TANG J Y, LI H H, AN S Z, et al. Distribution transformation by using step-like nonlinear magnets [J]. Nuclear Instruments and Methods in Physics Research Section A, 2004, 532(3): 538-547.
    [8]
    TANG J Y, WEI G H, ZHANG C. Step-like field magnets to transform beam distribution at the CSNS target [J]. Nuclear Instruments and Methods in Physics Research Section A, 2007, 582(2): 326-335.
    [9]
    TANG J Y, FENG G Y, LIU G W. Design and prototyping of a step-like field magnet [J]. IEEE Transactions on Applied Superconductivity, 2010, 20(3): 1041-1044.
    [10]
    GUO Z, TANG J Y, YANG Z, et al. A novel structure of multipole field magnets and their applications in uniformizing beam spot at target [J]. Nuclear Instruments and Methods in Physics Research Section A, 2012, 691(16):97-108.
    [11]
    TANG Jingyu, YANG Zheng, WEI Guohui, et al. Accelerator to target interface problems with high power beams [C]// Workshop on Nonlinear Beam Expander Systems in High-Power Accelerator Facilities. Aarhus, Denmark: Aarhus University, 2012.
    [12]
    CHENG X, PETTAN C, KNEBEL J U, et al. Experimental and numerical studies on thermal-hydraulics of spallation targets [C]// Emerging Nuclear and Transmutation Systems: Core Physics and Engineering Aspects. Vienna: International Atomic Energy Agency, 2003: 308-325.
    [13]
    BIANCHI F, FERRI R, MOREAU V. Thermo-hydraulic analysis of the windowless target system[J]. Journal of Nuclear Engineering and Design, 2008, 238(8): 2135-2145.
    [14]
    王相綦,罗焕丽,李想. 简化十二极场磁铁装置及其制造方法: ZL201210334199.2 [P]. 2015-01-21.
    [15]
    王相綦,罗焕丽,黄维. 一种圆孔径反对称简化六极场磁铁装置及其制造方法:ZL201310259701.2 [P]. 2015-10-21.

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