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中国散裂中子源快循环同步加速器壁电流探测系统

孙纪磊 李芳 王安鑫 徐韬光

孙纪磊, 李芳, 王安鑫, 等. 中国散裂中子源快循环同步加速器壁电流探测系统[J]. 强激光与粒子束, 2018, 30: 125103. doi: 10.11884/HPLPB201830.180224
引用本文: 孙纪磊, 李芳, 王安鑫, 等. 中国散裂中子源快循环同步加速器壁电流探测系统[J]. 强激光与粒子束, 2018, 30: 125103. doi: 10.11884/HPLPB201830.180224
Sun Jilei, Li Fang, Wang Anxin, et al. Design of the wall current monitor system at CSNS rapid cycling synchrotron[J]. High Power Laser and Particle Beams, 2018, 30: 125103. doi: 10.11884/HPLPB201830.180224
Citation: Sun Jilei, Li Fang, Wang Anxin, et al. Design of the wall current monitor system at CSNS rapid cycling synchrotron[J]. High Power Laser and Particle Beams, 2018, 30: 125103. doi: 10.11884/HPLPB201830.180224

中国散裂中子源快循环同步加速器壁电流探测系统

doi: 10.11884/HPLPB201830.180224
基金项目: 国家重大科学装置工程——中国散裂中子源项目
详细信息
    作者简介:

    孙纪磊(1985-), 男, 博士, 从事强流质子加速器束流测量研究, sunjl@ihep.ac.cn

  • 中图分类号: TL506

Design of the wall current monitor system at CSNS rapid cycling synchrotron

  • 摘要: 在中国散裂中子源工程中, 快循环同步加速器负责将剥离注入的能量为80MeV的质子束加速至1.6GeV后引出。在快循环同步加速器上共安装了两台壁电流探测器, 用来观测束流从注入至引出过程中束团在时域上的变化情况。详细介绍了壁电流探测器在陶瓷间隙、磁性材料和匹配电阻等方面的设计考虑, 以达到带宽满足百kHz到30 MHz的设计目标, 并对实际带束流测量结果进行分析讨论。经实际在线运行测试, 此壁电流探测器完全满足束流调试及运行需要。
  • 图  1  壁电流探测器原理图及其等效电路图

    Figure  1.  Schematic of a wall current monitor (WCM) and its equivalent circuit

    图  2  WCM上限截止频率与陶瓷环半径比的关系

    Figure  2.  Upper cut-off frequency of WCM varies with the radius ratio of the ceramic ring

    图  3  不同磁性材料的相对磁导率随频率变化曲线

    Figure  3.  Relative permeability of magnetic materials varies with frequency

    图  4  增加磁性材料后WCM的整体系统阻抗随频率变化曲线

    Figure  4.  Impedance of the WCM at different frequency points

    图  5  RCS-WCM组装过程及成品

    Figure  5.  Assembling of the RCS-WCM

    图  6  WCM测试工装及实验室测试

    Figure  6.  WCM lab test setup

    图  7  RCS-WCM 300 kHz至50 MHz S21响应曲线

    Figure  7.  S21 test result of RCS-WCM between 300 kHz and 50 MHz

    图  8  RCS-WCM实际测量结果

    Figure  8.  Measurement results with beam of RCS-WCM

    表  1  CSNS-RCS主要参数

    Table  1.   Key parameters of CSNS-RCS

    circumference/m pulse repetition rate/Hz beam energy/GeV bunch length/ns cycling period/μs
    227.92 25 0.08~1.6 500~90 1.957~0.819
    下载: 导出CSV
  • [1] Cameron P R, Lee R C, Shea T J, et al. The RHIC wall current monitor system[C]//Proceedings of the Particle Accelerator Conference. 1999: 2146-2148.
    [2] D'Elia A, Fandos R, Søby L. High bandwidth wall current monitor for CTF3[C]//Proceedings of EPAC08. 2008: 1092-1094.
    [3] Charrondière C, Limpens R, Delrieux M. Wall current monitor using PXI and LabVIEW at CERN[C]//16th International Conference on Accelerator and Large Experimental Control Systems. 2017: 1699-1702.
    [4] 王盛昌, 王安鑫, 徐韬光. 用于质子加速器的壁电流探头的研制[J]. 强激光与粒子束, 2012, 24(9): 2179-2182. doi: 10.3788/HPLPB20122409.2179

    Wang Shengchang, Wang Anxin, Xu Taoguang. Design of wall current monitor for proton accelerators. High Power Laser and Particle Beams, 2012, 24(9): 2179-2182 doi: 10.3788/HPLPB20122409.2179
    [5] Fu Shinian, Chen Hesheng, Chen Yanwei, et al. Status of CSNS project[C]//The 4th International Particle Accelerator Conference. 2013: 3995-3999.
    [6] Wei Jie, Chen Hesheng, Chen Yanwei, et al. China Spallation Neutron Source: Design, R&D, and outlook[J]. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009, 600(1): 10-13.
    [7] Blokland W. Beam current monitors[R]. Albuquerque, New Mexico: USPAS and University of New Mexico, 2009.
    [8] Denard J C. Beam current monitors[R]. Dourdan: CERN Accelerator School on Beam Diagnostics, 2008.
    [9] Webber R. Longitudinal emittance: An introduction to the concept and survey of measurement techniques including design of a wall current monitor[C]//Conference Proceedings on Accelerator Instrumentation. 1989, 212: 85-126.
    [10] Brian F, Jim C. An improved resistive wall monitor[DB/OL]. http://www.slac.stanford.edu/pubs/confproc/biw98/fellenz.pdf.
    [11] China Amorphous Technology CO. LTD[EB/OL]. http://www.catech.cn.
    [12] National Instruments Corporation. PXI-5124 user manual[DB/OL]. http://www.ni.com/pdf/manuals/371135k.pdf.
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出版历程
  • 收稿日期:  2018-08-20
  • 修回日期:  2018-10-25
  • 刊出日期:  2018-12-15

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