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储存环逐束团相位测量系统信号处理算法优化

周逸媚 冷用斌 许兴懿 高波 曹珊珊

周逸媚, 冷用斌, 许兴懿, 等. 储存环逐束团相位测量系统信号处理算法优化[J]. 强激光与粒子束, 2020, 32: 074002. doi: 10.11884/HPLPB202032.200033
引用本文: 周逸媚, 冷用斌, 许兴懿, 等. 储存环逐束团相位测量系统信号处理算法优化[J]. 强激光与粒子束, 2020, 32: 074002. doi: 10.11884/HPLPB202032.200033
Zhou Yimei, Leng Yongbin, Xu Xingyi, et al. Signal processing algorithm optimization of bunch-by-bunch phase measurement system for storage ring[J]. High Power Laser and Particle Beams, 2020, 32: 074002. doi: 10.11884/HPLPB202032.200033
Citation: Zhou Yimei, Leng Yongbin, Xu Xingyi, et al. Signal processing algorithm optimization of bunch-by-bunch phase measurement system for storage ring[J]. High Power Laser and Particle Beams, 2020, 32: 074002. doi: 10.11884/HPLPB202032.200033

储存环逐束团相位测量系统信号处理算法优化

doi: 10.11884/HPLPB202032.200033
基金项目: “万人计划”中青年科技领军人才计划项目;国家自然科学基金项目(11575282)
详细信息
    作者简介:

    周逸媚(1992—),女,博士,研究生,从事加速器逐束团诊断技术研究;zhouyimei@sinap.ac.cn

    通讯作者:

    冷用斌(1972—),男,博士,研究员,从事加速器逐束团诊断技术研究;lengyongbin@sinap.ac.cn

  • 中图分类号: TL506

Signal processing algorithm optimization of bunch-by-bunch phase measurement system for storage ring

  • 摘要: 为了进一步提高相位测量精度,上海光源束测组在原有逐束团相位测量系统基础上,提出了一种新的信号处理方式——相关函数法。此方法无需对原始束流信号进行低通滤波,通过直接在时域对示波器全部采样点进行模式匹配来计算逐束团相位,其优势在于数据处理仅受仪器带宽限制,可以保留更多的高次谐波信号。研究结果表明,新方法可避免低通滤波带来的束团间信号串扰问题,降低信号反射带来的系统测量误差。主成分分析法被用来评估相位测量分辨率,电荷量越大,分辨率越好。束团间精确的相位依赖关系还可用于储存环束流尾场及阻抗的分析。
  • 图  1  纵向相位测量实验系统框图

    Figure  1.  Experimental setup for the longitudinal phase measurement

    图  2  单束团模式下不同带宽信号反射大小评估

    Figure  2.  Reflection evaluation of different bandwidth in single bunch mode

    图  3  束团响应函数构建图

    Figure  3.  Construction of the response function

    图  4  匹配查找表的其中四组数据

    Figure  4.  Four groups of matching data in LUT

    图  5  束团实际采样数据与匹配查找表相关性对比

    Figure  5.  Correlation between measured data and LUT matching data

    图  6  上海光源正常供光模式

    Figure  6.  Normal filling pattern of SSRF operation

    图  7  逐束团相位与逐圈相位

    Figure  7.  Bunch-by-bunch phase and turn-by-turn phase of one bunch

    图  8  SVD分解后奇异值分布与主模式时间向量分布

    Figure  8.  Singular value distribution after singular value decomposition (SVD) and temporal vector distribution of mode 1

    图  9  逐束团相位测量分辨率与电荷量的依赖性

    Figure  9.  Dependence between bunch phase resolution and charge

  • [1] Zhao Z T, Xu H J, Ding H. Commissioning of the Shanghai Light Source[C]//Proc of PAC. 2009: 55-59.
    [2] 冷用斌, 周伟民, 袁任贤, 等. 上海光源储存环束流位置监测系统[J]. 核技术, 2010, 33(6):401-404. (Leng Yongbin, Zhou Weimin, Yuan Renxian, et al. Beam position monitor system for SSRF storage ring[J]. Nuclear Techniques, 2010, 33(6): 401-404
    [3] Zhou Y M, Gao B, Zhang N, et al. Injection transient study using 6-dimensional bunch-by-bunch diagnostic system at SSRF[C]//Proc of IBIC. 2018: 542-547.
    [4] Podobedov B, Siemann R. New apparatus for precise synchronous phase shift measurements in storage rings[J]. Physical Review Special Topics—Accelerators and Beams, 1998, 1: 072801. doi: 10.1103/PhysRevSTAB.1.072801
    [5] Farias R H A, Lin Liu, Rodrigues A R D, et al. Oscilloscope measurement of the synchronous phase shift in an electron storage ring[J]. Physical Review Special Topics—Accelerators and Beams, 2001, 4: 072801.
    [6] 张宁, 冷用斌, 陈之初, 等. 基于示波器嵌入式IOC技术的逐束团位置监测系统研制[J]. 核技术, 2012, 35(5):337-341. (Zhang Ning, Leng Yongbin, Chen Zhichu, et al. A bunch-by-bunch beam position monitor based on scope embedded IOC[J]. Nuclear Techniques, 2012, 35(5): 337-341
    [7] Zhou Yimei, Chen Hanjiao, Cao Sansan, et al. Bunch-by-bunch longitudinal phase monitor at SSRF[J]. Nuclear Science and Techniques, 2018, 29(113): 1-6.
    [8] 程乾生. 数字信号处理[M]. 北京: 北京大学出版社, 2003.

    Cheng Qiansheng. Digital signal processing. Beijing: Peking University Press, 2003
    [9] 师博, 徐金强, 孙大睿, 等. 飞秒激光脉冲序列互相关实验及结果分析[J]. 强激光与粒子束, 2009, 21(8):1121-1124. (Shi Bo, Xu Jinqiang, Sun Darui, et al. Experimental research on cross-correlation between pulses of femtosecond laser sequence[J]. High Power Laser and Particle Beams, 2009, 21(8): 1121-1124
    [10] Yang Y, Leng Y B, Zhang N. Bunch-by-bunch beam position and charge monitor based on broadband scope in SSRF[C]//Proc of IPAC. 2013: 595-597.
    [11] 张宁, 杨勇, 冷用斌, 等. 模式独立分析方法在加速器逐束团研究中的应用[J]. 强激光与粒子束, 2014, 26:035103. (Zhang Ning, Yang Yong, Leng Yongbin, et al. Application of model independent analysis-based method to accelerator bunch-by-bunch research[J]. High Power Laser and Particle Beams, 2014, 26: 035103 doi: 10.3788/HPLPB20142603.35103
    [12] Wang Chunxi. Measurement and application of betatron modes with MIA[C]//Proc of PAC. 2003: 3407-3409.
    [13] Wang Chunxi. Spatial-temporal modes observed in the APS storage ring using MIA[C]//Proc of PAC. 2003: 3410-3412.
    [14] Chen Zhichu, Leng Yongbin, Yuan Renxian, et al. Beam position monitor troubleshooting by using principal component analysis in Shanghai Synchrotron Radiation Facility[J]. Nuclear Science and Techniques, 2014, 25: 020102.
    [15] Chen Zhichu, Leng Yongbin, Yan Yingbing, et al. Performance evaluation of BPM system in SSRF using PCA method[J]. Chinese Physics C, 2014, 38(7): 077004.
    [16] Chen Zhichu, Leng Yongbin, Yuan Renxian, et al. Study of algorithms of phase advance measurement between BPMs and its application in SSRF[J]. Nuclear Science and Techniques, 2013, 24: 010102.
    [17] Chen Zhichu, Leng Yongbin, Yuan Renxian, et al. Wakefield measurement using principal component analysis on bunch-by-bunch information during transient state of injection in a storage ring[J]. Physical Review Special Topics—Accelerators and Beams, 2014, 17: 112803. doi: 10.1103/PhysRevSTAB.17.112803
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出版历程
  • 收稿日期:  2020-02-17
  • 修回日期:  2020-04-15
  • 刊出日期:  2020-06-24

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