数字束流位置探测器系统的信噪比需求分析

高国栋; 唐旭辉; 曹建社; 杜垚垚; 刘智; 叶强; 麻惠洲; 随艳峰; 岳军会; 何俊; 季大恒; 杨静; 李宇鲲; 魏书军

doi:10.11884/HPLPB202234.210522

数字束流位置探测器系统的信噪比需求分析

doi: 10.11884/HPLPB202234.210522

高国栋^{1, 2,},
唐旭辉^{1, 2},
曹建社^{1, 2},
杜垚垚¹,
刘智¹,
叶强¹,
麻惠洲¹,
随艳峰^{1, 2},
岳军会¹,
何俊¹,
季大恒¹,
杨静^{1, 2},
李宇鲲^{1, 2},
魏书军^{1, 2, ,}

1.
中国科学院高能物理研究所, 北京 100049
2.
中国科学院大学, 北京 100049

基金项目: 中国科学院青年创新促进会项目（Y202005）；中国科学院重大科技基础设施重大成果培育项目(E01G74Y2) ；国家自然科学基金青年基金项目（11805221）

详细信息

作者简介:
高国栋，gaoguodong@ihep.ac.cn

通讯作者:
魏书军，weisj@ihep.ac.cn

中图分类号: TL506
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- 文章访问数: 734
- HTML全文浏览量: 256
- PDF下载量: 116
- 被引次数: 0
出版历程
- 收稿日期: 2021-11-25
- 修回日期: 2022-01-27
- 录用日期: 2022-02-19
- 网络出版日期: 2022-02-26
- 刊出日期: 2022-06-15

Signal-to-noise ratio requirement analysis for digital beam position monitor system

Gao Guodong^{1, 2
,},
Tang Xuhui^{1, 2},
Cao Jianshe^{1, 2},
Du Yaoyao¹,
Liu Zhi¹,
Ye Qiang¹,
Ma Huizhou¹,
Sui Yanfeng^{1, 2},
Yue Junhui¹,
He Jun¹,
Ji Daheng¹,
Yang Jing^{1, 2},
Li Yukun^{1, 2},
Wei Shujun^{1, 2
, ,}

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

摘要

摘要: 以高能同步辐射光源（HEPS）对BPM提出的位置测量分辨率要求为出发点，介绍了BPM系统的整体架构并推导出BPM系统的信号链路中各级信号所需达到的信噪比；并根据ADC采样数据的信噪比需求，计算出ADC采样时钟的抖动需求；最后介绍了能够测量BPM信号信噪比和采样时钟抖动的BPM测试平台。各项结论可以作为判断BPM系统各部分能否达到HEPS工程要求的标准。
- 高能同步辐射光源 /
- 数字束流位置探测器 /
- 信噪比 /
- 时钟抖动 /
- ADC采样
Abstract: The signal-to-noise ratio (SNR) of DBPM signal is one of the important parameters to measure the performance of BPM, and it plays a decisive role in the resolution of beam position measurement. Based on the position measurement resolution requirements of high energy photon source (HEPS) for BPM, this paper firstly introduces the overall architecture of BPM system and deduces the signal-to-noise ratio of signals at all levels in the signal link of BPM system. Then the calculation method of ADC sampling clock jitter and BPM electronics test platform are introduced. The conclusions in this paper can be used as a standard to judge whether each part of BPM system can meet the requirements of HEPS, which is of great significance to promote the batch application of self-developed BPM electronics in HEPS engineering.
- high energy photon source /
- digital beam position monitor /
- signal-to-noise ratio /
- clock jitter /
- ADC sampling

HTML全文

图 1 BPM信号链路示意图

Figure 1. Schematic diagram of BPM signal link

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图 2 BPM射频调理电路结构图

Figure 2. Structure diagram of BPM RF conditioning circuit

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图 3 BPM算法结构图

Figure 3. Structure diagram of BPM algorithm

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图 4 BPM位置数据信噪比及数据处理增益需求

Figure 4. BPM position data SNR and data processing gain requirements

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图 5 BPM标定系统结构图

Figure 5. Structure diagram of BPM calibration system

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图 6 BPM电子学测试平台结构图

Figure 6. Structure diagram of BPM electronics test platform

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图 7 频谱仪测试结果图

Figure 7. Spectrum analyzer test result diagram

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图 8 原始ADC数据信噪比测试结果

Figure 8. SNR test result of original ADC data

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图 9 采样时钟抖动测试结果

Figure 9. Sampling clock jitter test result

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表 1 射频调理电路内部器件性能

Table 1. Performance of internal devices in RF conditioning circuit

LFCN1 ATT BPF1 LNA1 LFCN2 BPF2 LNA2 LFCN3 BALUN

NF/dB 0.73 0.6 2 0.9 0.73 2 2.7 0.73 2
gain/dB 0 0 0 20.6 0 0 19.4 0 −2

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参考文献(12)

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