课题组主要研究方向：

1）电子储存环逐束团诊断技术。研究新的束流信号检测及分析方法，新的束流信号处理方法，尝试从单一宽带束流探头信号中提取多维逐束团信息，世界上首次实现电子束流逐束团三维位置精确测量，首次实现储存环注入束团三维位置信息分离；

2）机器学习技术在束流诊断技术中的应用。尝试将机器学习技术用于多探头数据关联分析、单探头多参数拟合提取、源信号与干扰信号的分离等；

3）波动光学在束流诊断技术中的应用。以高能电子束流远场辐射信号（例如同步光）为研究对象，探索基于光学的超小电子束团三维分布参数诊断方法及技术；

4）基于腔式探头的多参数诊断技术。谐振腔型探头优化设计，腔式探头多参数信息提取优化算法，基于腔式探头的束测系统集成及优化技术；

5）束流测控专用信号处理器研制及应用技术。基于FPGA及高速ADC/DAC（采样率百MHz乃至GHz量级）的专用信号处理器研制及应用，处理器硬件及软件架构设计，新信号处理算法在FPGA中的实现及优化。

 

负责人参与加速器大科学装置工程工作经验：

l  上海光源，束测系统负责人，2004-2015

l  大连相干光源，副总工程师，2012至项目验收

l  上海软X射线自由电子激光试验装置，副总工程师，2014年至项目验收

l  上海光源二期线站升级改造工程，副总工程师，2016-2022

l  上海硬X射线自由电子激光装置（SHINE），副总工程师，2017-2022

l  合肥先进光源，副总指挥/副总工程师，2022至今

l  超级陶粲工厂（STCF）关键技术预研项目，副经理，2023至今

l  合肥红外自由电子激光装置升级改造，项目负责人，2023至今

课题组近五年主要发表文章：

1.        Xing Yang, Hong‑Shuang Wang, Yi‑Mei Zhou, Yong‑Bin Leng*, Determining beam transverse absolute position by triangulation of multi‑electrode signal phase differences, Nuclear Science and Techniques, 23 July 2024, Volume 35, article number 133, (2024), https://doi.org/10.1007/s41365-024-01498-y

2.        You‑Ming Deng, Yong‑Bin Leng*, Xing‑Yi Xu, Jian Chen, Yi‑Mei Zhou, Ultrahigh spatiotemporal resolution beam signal reconstruction with bunch phase compensation, Nuclear Science and Techniques, 3 June 2024, Volume 35, article number 89, (2024), https://doi.org/10.1007/s41365-024-01444-y

3.        Hong‑Shuang Wang, Xing Yang, Yong‑Bin Leng*, Yi‑Mei Zhou, Ji‑Gang Wang, Bunch‑length measurement at a bunch‑by‑bunch rate based on time–frequency‑domain joint analysis techniques and its application, Nuclear Science and Techniques, 24 May 2024, Volume 35, article number 80, (2024), https://doi.org/10.1007/s41365-024-01443-z

4.        Jian Chen , Shanshan Cao, Luyang Yu, Longwei Lai, Renxian Yuan, and Fangzhou Chen, Yongbin Leng*, In situ beam trajectory tilt measurement based on single cavity beam position monitor, PHYSICAL REVIEW ACCELERATORS AND BEAMS 26, 102802 (2023)

5.        Yimei Zhou, Yongbin Leng∗, Longwei Lai, Xingyi Xu, Tianlong He, Experimental verification and analysis of the beam loading effect based on precise bunch-by-bunch 3D position measurement, Nuclear Inst. And Methods in Physics Research, A, 1051, 11 March 2023, 168201

6.        Shanshan Cao, Yongbin Leng∗, Renxian Yuan, Jian Chen, An application of a cavity-based beam arrival time measurement system: Beam energy measurement, Nuclear Inst. And Methods in Physics Research, A, Volume 1045, 1 January 2023, 167456, https://doi.org/10.1016/j.nima.2022.167456

7.        Yimei Zhou, Yongbin Leng*, Longwei Lai, Xingyi Xu, Tianlong He, Experimental verification and analysis of the beam loading effect based on precise bunch-by-bunch 3D position measurement, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume 1051, June 2023, 168201, https://doi.org/10.1016/j.nima.2023.168201

8.        Jian Chen, Shanshan Cao, Luyang Yu, Longwei Lai, Renxian Yuan, Fangzhou Chen, and Yongbin Leng*, In situ beam trajectory tilt measurement based on single cavity beam position monitor, Phys. Rev. Accel. Beams 26, 102802 – Published 10 October 2023, https://doi.org/10.1103/PhysRevAccelBeams.26.102802

9.        Jun Wan, Yongbin Leng*, Bo Gao, Fangzhou Chen, Jie Chen, Longwei Lai, Weimin Zhou, Wenzhen Xu, Simulation of wire scanner for high repetition free electron laser facilities, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 1026, 1 March 2022, 166200, https://doi.org/10.1016/j.nima.2021.166200

10.     Jian Chen, Yongbin Leng*, Shanshan Cao, Longwei Lai, Renxian Yuan, Ruitao Jiang, Xing Yang, Optimized design method study for cavity BPM system, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 1044, 1 December 2022, 167509, https://doi.org/10.1016/j.nima.2022.167509

11.     JIANG Ruitao, YANG Xing, DENG Youming, LENG Yongbin∗, Diagnostic Method for Beam Position Monitor Based on Clustering by Fast Search and Find of Density Peaks, J. Shanghai Jiao Tong Univ. (Sci.), 2022,  https://doi.org/10.1007/s12204-022-2546-y

12.     Xing-Yi Xu, Yong-Bin Leng, Bo Gao, Yi-Mei Zhou, Shan-Shan Cao, Jian Chen & Fang-Zhou Chen, HOTCAP: a new software package for high-speed oscilloscope-based three-dimensional bunch charge and position measurement, Nuclear Science and Techniques, 24 November 2021, Volume 32, article number 131, (2021)

13.     Jian Chen, Shanshan Cao, Yongbin Leng*，Study of the optimal amplitude extraction algorithm for cavity BPM，Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume 1012, 1 October 2021, 165627, https://doi.org/10.1016/j.nima.2021.165627

14.     Bo Gao, Fangzhou Chen, Yimei Zhou, Yongbin Leng*, Bunch-by-bunch beam lifetime measurement at SSRF, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 1015, 1 November 2021, 165758, https://doi.org/10.1016/j.nima.2021.165758

15.     Xingyi Xu, Yongbin Leng*, Yimei Zhou, Bo Gao, Ning Zhang, Jian Chen, and Shanshan Cao，New noninvasive measurement method of optics parameters in a storage ring using bunch-by-bunch 3D beam position measurement data，PHYSICAL REVIEW ACCELERATORS AND BEAMS 24, 062802 (2021)

16.     Xingyi Xu,Yongbin Leng*, Yimei Zhou, Bo Gao, Jian Chen, and Shanshan Cao，Bunch-by-bunch three-dimensional position and charge measurement in a storage ring，PHYSICAL REVIEW ACCELERATORS AND BEAMS 24, 032802 (2021)

17.     Shanshan Cao, Yongbin Leng*, Renxian Yuan, and Jian Chen, Optimization of beam arrival and flight time measurement system based on cavity monitors at the SXFEL, IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 68, NO. 1, JANUARY 2021

18.     Xinyi Xu(†); Yimei Zhou; Yongbin Leng(*), Machine learning based image processing technology application in bunch longitudinal phase information extraction,PRAB 23, 032805 (2020)

19.     Yimei Zhou(†); Zhichu Chen; Bo Gao; Ning Zhang; Yongbin Leng(*), Bunch-by-bunch phase study of the transient state during injection, NIMA,955(2020) 163273

20.     Chen, F., Chen, Z., Zhou, Y. Leng Y. (*) et al. Touschek lifetime study based on the precise bunch-by-bunch BCM system at SSRF. NUCL SCI TECH 30, 144 (2019)

21.     Cao, S., Yuan, R., Chen, J., Leng Y. (*) et al. Dual-cavity beam arrival time monitor design for the Shanghai soft X-ray FEL facility. NUCL SCI TECH 30, 72 (2019)

22.     Gao B, Leng Y B*, Chen H J, et al. Upgrade of the X-ray pinhole camera system at SSRF[J]. Nuclear Science and Techniques, 2018, 29(8): 115.

23.     Zhou Y M, Chen H J, Cao S S, Leng Y. (*) et al. Bunch-by-bunch longitudinal phase monitor at SSRF[J]. Nuclear Science and Techniques, 2018, 29(8): 113.

24.     Chen J, Leng Y B *, Yu L Y, et al. Study of the crosstalk evaluation for cavity BPM[J]. Nuclear Science and Techniques, 2018, 29(6): 83.

25.     Chen H J, Chen J, Gao B, Leng Y. (*) et al. Bunch-by-bunch beam size measurement during injection at Shanghai Synchrotron Radiation Facility[J]. Nuclear Science and Techniques, 2018, 29(6): 79.