留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

合肥光源逐束团相位测量及纵向不稳定性诊断

唐雷雷 卢平 孙葆根 周泽然 吴睿喆

唐雷雷, 卢平, 孙葆根, 等. 合肥光源逐束团相位测量及纵向不稳定性诊断[J]. 强激光与粒子束. doi: 10.11884/HPLPB202133.210164
引用本文: 唐雷雷, 卢平, 孙葆根, 等. 合肥光源逐束团相位测量及纵向不稳定性诊断[J]. 强激光与粒子束. doi: 10.11884/HPLPB202133.210164
Tang Leilei, Lu Ping, Sun Baogen, et al. Bunch-by-bunch phase measurement and longitudinal instabilities diagnostics at Hefei Light Source[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202133.210164
Citation: Tang Leilei, Lu Ping, Sun Baogen, et al. Bunch-by-bunch phase measurement and longitudinal instabilities diagnostics at Hefei Light Source[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202133.210164

合肥光源逐束团相位测量及纵向不稳定性诊断

doi: 10.11884/HPLPB202133.210164
基金项目: 国家自然科学基金项目(11805204, 12075236)
详细信息
    作者简介:

    唐雷雷,tanglei@ustc.edu.cn

    通讯作者:

    卢 平,lup@ustc.edu.cn

  • 中图分类号: TL506

Bunch-by-bunch phase measurement and longitudinal instabilities diagnostics at Hefei Light Source

  • 摘要: 为了研究储存环束流多束团纵向运动特性,在合肥光源(HLS-II)上研制了一套逐束团相位测量系统。该系统利用示波器直接采集BPM和信号,采用过零点检测法、时间差分(Temporal Difference, TD)法相结合的方法从BPM和信号中提取出逐束团相位。介绍了逐束团相位测量系统的系统构架、相位提取方法以及在HLS-II上的一些实验结果。通过对该系统记录的5 ms时间长度的逐束团多圈相位数据的离线分析,得到多束团纵向运动的同步振荡的频率、纵向工作点、束团振荡的模式信息以及振荡模式增长率等特征信息,诊断出HLS-II在top-off恒流运行期间存在2个较强的纵向耦合束团不稳定模式,并提取出了2个振荡模式的增长率。该系统的逐束团相位测量结果及相关纵向不稳定性分析可为机器研究、纵向反馈系统调试评估及高频RF系统的性能评估等提供参考。
  • 图  1  系统构架框图

    Figure  1.  System architecture diagram

    图  2  示波器采集到的BPM和信号

    Figure  2.  BPM sum signal collected by oscilloscope

    图  3  过零检测法测量束团相位示意图

    Figure  3.  Schematic of bunch phase measurement by zero-crossing detection

    图  4  单束团多圈相位振荡时域波形及功率谱

    Figure  4.  Single bunch multi turns time-domain waveform and power spectrum

    图  5  逐束团同步振荡频率分布

    Figure  5.  Bunch-by-bunch syncrotron frequency distribution

    图  6  逐束团相位矩阵的PCA分解

    Figure  6.  PCA decomposition of bunch-by-bunch phase matrix

    图  7  逐束团相位测量分辨率分布

    Figure  7.  The measurement resolution distribution of bunch-by-bunch phase

    图  8  多束团模式分布

    Figure  8.  Multi-bunch modes distribution

  • [1] Xu Wei, Jia Dachun, Jiang Shiping, et al. Upgrade project on top-off operation for Hefei light source[C]//Proceedings of the 8th International Particle Accelerator Conference. 2017: 2719-2722.
    [2] Zhou Yimei, Chen Hanjiao, Cao Shanshan, et al. Bunch-by-bunch longitudinal phase monitor at SSRF[J]. Nuclear Science and Techniques, 2018, 29: 113. doi: 10.1007/s41365-018-0445-6
    [3] Zhou Yimei, Chen Zhichu, Gao Bo, et al. Bunch-by-bunch phase study of the transient state during injection[J]. Nuclear Instruments and Methods in Physics Research Section A:Accelerators, Spectrometers, Detectors and Associated Equipment, 2020, 955: 163273. doi: 10.1016/j.nima.2019.163273
    [4] Fox J, Larsen R, Prabhakar S, et al. Multi-bunch instability diagnostics via digital feedback systems at PEP-II, DAΦNE, ALS and SPEAR[C]//Proceedings of the 1999 Particle Accelerator Conference (Cat. No. 99CH36366). 1999: 636-640.
    [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. doi: 10.1103/PhysRevSTAB.4.072801
    [6] Lee J, Chun M H, Kim G J, et al. Bunch-by-bunch position measurement and analysis at PLS-II[J]. Journal of Synchrotron Radiation, 2017, 24(1): 163-167. doi: 10.1107/S1600577516018154
    [7] Yang Yongliang, Ma Tianji, Sun Baogen, et al. HLS bunch current measurement system[J]. Science China Physics, Mechanics and Astronomy, 2011, 54(2): 309-312.
    [8] Qin Zengguang, Chen Liang, Bao Xiaoyi. Wavelet denoising method for improving detection performance of distributed vibration sensor[J]. IEEE Photonics Technology Letters, 2012, 24(7): 542-544. doi: 10.1109/LPT.2011.2182643
    [9] 郑凯, 王筠华, 刘祖平, 等. 小波分析方法在合肥光源逐束团测量系统中的应用[J]. 强激光与粒子束, 2012, 24(5):1155-1159. (Zheng Kai, Wang Junhua, Liu Zuping, et al. Application of Hilbert-transform-phase-space-reconstruction in HLS bunch-by-bunch system[J]. High Energy Physics and Nuclear Physics, 2012, 24(5): 1155-1159 doi: 10.3788/HPLPB20122405.1155
    [10] Daubechies I. Ten lectures on wavelets[M]. Philadelphia: SIAM, 1992: 194-202.
    [11] Xu Xingyi, Leng Yongbin, Zhou Yimei, et al. Bunch-by-bunch three-dimensional position and charge measurement in a storage ring[J]. Physical Review Accelerators and Beams, 2021, 24: 032802. doi: 10.1103/PhysRevAccelBeams.24.032802
    [12] Li W B, Zhou Z R, Sun B G, et al. Digital longitudinal bunch-by-bunch feedback system for the HLS II[C]//Proceedings of IBIC2012. 2012: 434-436.
    [13] Fox J D, Claus R, Hindi H, et al. Observation, control and modal analysis of longitudinal coupled bunch instabilities in the ALS via a digital feedback system[C]//Proceedings of AIP Conference. 1997: 207-214.
    [14] 郑凯, 王筠华, 刘祖平, 等. 基于Hilbert变换的相空间重建方法在HLS逐束团测量系统中的应用[J]. 高能物理与核物理, 2007, 31(3):307-310. (Zheng Kai, Wang Junhua, Liu Zuping, et al. Application of Hilbert-transform-phase-space-reconstruction in HLS bunch-by-bunch system[J]. High Energy Physics and Nuclear Physics, 2007, 31(3): 307-310 doi: 10.3321/j.issn:0254-3052.2007.03.018
    [15] Prabhakar S, Fox J D, Teytelman D, et al. Phase space tracking of coupled-bunch instabilities[J]. Physical Review Special Topics-Accelerators and Beams, 1999, 2: 084401. doi: 10.1103/PhysRevSTAB.2.084401
  • 加载中
计量
  • 文章访问数:  31
  • HTML全文浏览量:  18
  • PDF下载量:  1
  • 被引次数: 0
出版历程
  • 收稿日期:  2021-04-28
  • 修回日期:  2021-08-25
  • 网络出版日期:  2021-09-13

目录

    /

    返回文章
    返回