Development of the BPM Signal Generator for the FOFB Test System of HEPS

Zhou Daiquan; ZHANG Hong; Li Yilin; Gao Guodong; Xu Liang; Cao Jianshe; Wei Shujun

doi:10.11884/HPLPB202537.250161

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Zhou Daiquan, ZHANG Hong, Li Yilin, et al. Development of the BPM Signal Generator for the FOFB Test System of HEPS[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250161

Citation:

Zhou Daiquan, ZHANG Hong, Li Yilin, et al. Development of the BPM Signal Generator for the FOFB Test System of HEPS[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250161

Zhou Daiquan, ZHANG Hong, Li Yilin, et al. Development of the BPM Signal Generator for the FOFB Test System of HEPS[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250161

Citation:

Zhou Daiquan, ZHANG Hong, Li Yilin, et al. Development of the BPM Signal Generator for the FOFB Test System of HEPS[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250161

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Development of the BPM Signal Generator for the FOFB Test System of HEPS

doi: 10.11884/HPLPB202537.250161

Zhou Daiquan^{1, 2
,},
ZHANG Hong^{1
,
,},
Li Yilin^{1
,
,},
Gao Guodong^{1, 2
,
,},
Xu Liang^{1, 2},
Cao Jianshe^{1, 2},
Wei Shujun¹

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2025-06-06
Accepted Date: 2025-08-12
Rev Recd Date: 2025-08-20

Available Online: 2025-09-06

Abstract

Abstract

Background
The fast orbit feedback (FOFB) system of the high energy photon source (HEPS) has been developed for the beam orbit control in its storage ring. It mainly consists of beam position monitors (BPMs), the algorithms of fast orbit controller (FOC) and fast correction units. To support HEPS commissioning, we have developed a high-performance signal generator to complete the simulation of beam signals.
Purpose
The developed signal source includes four output ports with independently adjustable signal amplitudes and synchronous triggers. Its goal is to simulate the timing signals, and enable the simulation output of BPM signals under real beam conditions in the laboratory without beam, with the advantages of simple structure, low cost and high repeatability.
Methods
The core of the signal source is an FPGA board. Firstly, a 250 MHz clock signal with a 25% duty cycle has been generated by the PLL and directly routed through the MRCC pin. After completing the impedance matching, the RF signal has been processed via differential circuit to obtain the required simulated beam signals. Then, the required signals have been amplified using the RF amplifier. After the 1:4 power division, beam signals with four adjustable amplitudes output channels have been acquired finally. The trigger signal has been supplied directly from the FPGA I/O pins configured for LVCMOS33 operation at 3.3V, to meet the required LVTTL of BPM electronics.
Results
Based on the beam current characteristics of the HEPS storage ring, we have tested the beam signal simulation performance of HEPS storage ring with a frequency of 220kHz and different patterns during the experiment. In addition, the simulation performance of the single trigger signal and BEPCII collision zone with a frequency of 1.21MHz has also been tested. The test results showed that the developed signal source could simulate the beam signal well and meet the design requirements. Then, we have tested the pattern dependence of HEPS BPM electronics with this signal source. The results showed that there is no pattern dependence effect in the HEPS BPM electronics used in this experiment.
Conclusions
This signal generator could be used to assist the logical design and correctness of DBPM, as well as the debugging of the data transmission and control logic between the DBPM and FOFB, and testing the latency of the FOFB system. Based on this system, the debugging difficulty of BPM and FOFB systems could be reduced and accelerating the deployment of the FOFB system.
- signal generator,
- analog circuit design,
- FOFB,
- HEPS,
- FPGA

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References(18)

References

[1]	姜晓明, 王九庆, 秦庆, 等. 中国高能同步辐射光源及其验证装置工程[J]. 中国科学: 物理学力学天文学, 2014, 44(10): 1075-1094 Jiang Xiaoming, Wang Jiuqing, Qin Qing, et al. Chinese high energy photon source and the test facility[J]. SCIENTIA SINICA Physica, Mechanica & Astronomica, 2014, 44(10): 1075-1094
[2]	Jiao Yi, Xu Gang, Cui Xiaohao, et al. The HEPS project[J]. Journal of Synchrotron Radiation, 2018, 25(6): 1611-1618. doi: 10.1107/S1600577518012110
[3]	焦毅, 潘卫民. 高能同步辐射光源[J]. 强激光与粒子束, 2022, 34: 104002 doi: 10.11884/HPLPB202234.220080 Jiao Yi, Pan Weimin. High energy photon source[J]. High Power Laser and Particle Beams, 2022, 34: 104002 doi: 10.11884/HPLPB202234.220080
[4]	Uzun I S, Bartolini R, Rehm G, et al. Initial design of the fast orbit feedback system for diamond light source[C]//Proceedings of the 10th ICALEPCS International Conferences on Accelerator and Large Experimental Physics Control Systems. 2005: PO2.030-2.
[5]	Uzun I S. Diamond light source fast orbit feedback communication controller specification and design[R]. Diamond Internal Report, 2009.
[6]	Olmos A, Moldes J, Blanch S, et al. First steps towards a fast orbit feedback at ALBA[C]//Proceedings of IBIC2013. 2013: 727-730.
[7]	Olmos A, Moldes J, Petrocelli R, et al. Commissioning of the alba fast orbit feedback system[C]//Proceedings of IBIC2014. 2014: 691-695.
[8]	Kongtawong S, Yang Xi, Ha K, et al. NSLS-II FOFB performance improvement in 2019[R]. Upton: Brookhaven National Laboratory, 2019.
[9]	唐旭辉, 何俊, 岳军会, 等. 束流位置探测器自动标定系统研制[J]. 核技术, 2022, 45: 020102 doi: 10.11889/j.0253-3219.2022.hjs.45.020102 Tang Xuhui, He Jun, Yue Junhui, et al. Development of an automatic calibration system for beam position monitor[J]. Nuclear Techniques, 2022, 45: 020102 doi: 10.11889/j.0253-3219.2022.hjs.45.020102
[10]	王贵诚, 王筠华, 蒋道满, 等. BPM定标系统及其应用[J]. 核技术, 2003, 26(4): 254-256 doi: 10.3321/j.issn:0253-3219.2003.04.002 Wang Guicheng, Wang Junhua, Jiang Daoman, et al. A BPM calibration system and its application[J]. Nuclear Techniques, 2003, 26(4): 254-256 doi: 10.3321/j.issn:0253-3219.2003.04.002
[11]	李勤, 何小中, 蒋薇, 等. 强流脉冲束流位置探测器标定装置物理设计[J]. 强激光与粒子束, 2023, 35: 034002 doi: 10.11884/HPLPB202335.220224 Li Qin, He Xiaozhong, Jiang Wei, et al. Physical design of calibrated device for intense pulse electron beam position monitor[J]. High Power Laser and Particle Beams, 2023, 35: 034002 doi: 10.11884/HPLPB202335.220224
[12]	王道远. HEPS快速轨道反馈系统关键技术研究[D]. 北京: 中国科学院高能物理研究所, 2023 Wang Daoyuan. Research on key technologies of HEPS fast orbital feedback system[D]. Beijing: Institute of High Energy Physics, Chinese Academy of Sciences, 2023
[13]	黄玺洋, 魏源源, 许海生. HEPS轨道反馈物理需求[R]. 北京: 中国科学院高能物理研究所, 2023 Huang Xiyang, Wei Yuanyuan, Xu Haisheng. Physical requirements for HEPS orbital feedback[R]. Beijing: Institute of High Energy Physics, Chinese Academy of Sciences, 2023
[14]	高国栋, 刘鹏, 龙锋利, 等. HEPS快速轨道反馈系统网络拓扑结构的设计与实现[J]. 核技术, 2023, 46: 050102 doi: 10.11889/j.0253-3219.2023.hjs.46.050102 Gao Guodong, Liu Peng, Long Fengli, et al. Design and implementation of network topology for HEPS fast orbit feedback system[J]. Nuclear Techniques, 2023, 46: 050102 doi: 10.11889/j.0253-3219.2023.hjs.46.050102
[15]	高国栋. 高能同步辐射光源快速轨道反馈系统的研究[D]. 北京: 中国科学院高能物理研究所, 2024 Gao Guodong. Research on fast orbit feedback system for high-energy synchrotron radiation light sources[D]. Beijing: Institute of High Energy Physics, Chinese Academy of Sciences, 2024
[16]	刘佳阳, 麻惠洲, 杜垚垚, 等. 单次通过型束流位置探测器的束流位置测量方法[J]. 强激光与粒子束, 2023, 35: 124008 doi: 10.11884/HPLPB202335.230264 Liu Jiayang, Ma Huizhou, Du Yaoyao, et al. Measurement method for beam position of single pass beam position monitor[J]. High Power Laser and Particle Beams, 2023, 35: 124008 doi: 10.11884/HPLPB202335.230264
[17]	叶强, 张醒儿, 随艳峰, 等. 数字BPM数字采样电子学研制[J]. 核电子学与探测技术, 2020, 40(6): 855-860 doi: 10.3969/j.issn.0258-0934.2020.06.001 Ye Qiang, Zhang Xing’er, Sui Yanfeng, et al. The development of digital BPM digital acquisition electronics[J]. Nuclear Electronics & Detection Technology, 2020, 40(6): 855-860 doi: 10.3969/j.issn.0258-0934.2020.06.001
[18]	随艳峰, 杜垚垚, 叶强, 等. 基于BEPCⅡ数字束流位置测量系统电子学系统的设计与实现[J]. 原子能科学技术, 2020, 54(1): 172-178 doi: 10.7538/yzk.2019.youxian.0044 Sui Yanfeng, Du Yaoyao, Ye Qiang, et al. Development of digital beam position monitor electronics system based on BEPCⅡ[J]. Atomic Energy Science and Technology, 2020, 54(1): 172-178 doi: 10.7538/yzk.2019.youxian.0044