中国散裂中子源直线输运线束流位置测量系统

孟鸣; 徐韬光; 李芳; 徐智虹; 杨涛; 李鹏; 孙纪磊

doi:10.11884/HPLPB201931.180313

中国散裂中子源直线输运线束流位置测量系统

doi: 10.11884/HPLPB201931.180313

孟鸣^{1, 2,},
徐韬光^{1, 2},
李芳^{1, 2},
徐智虹^{1, 2},
杨涛^{1, 2},
李鹏^{1, 2},
孙纪磊^{1, 2}

1.
中国科学院高能物理研究所, 北京 100049
2.
东莞中子科学中心, 东莞 523803

基金项目: 国家重大科学装置工程-中国散裂中子源项目

详细信息

作者简介:
孟鸣(1985—), 男，硕士，从事高能加速器束流测量相关工作; mengming@mail.ihep.ac.cn

中图分类号: TL506
计量
- 文章访问数: 1145
- HTML全文浏览量: 275
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- 被引次数: 0
出版历程
- 收稿日期: 2018-11-10
- 修回日期: 2019-03-04
- 刊出日期: 2019-07-15

Beam position monitor system in linac to ring beam transport of China Spallation Neutron Source

Meng Ming^{1, 2
,},
Xu Taoguang^{1, 2},
Li Fang^{1, 2},
Xu Zhihong^{1, 2},
Yang Tao^{1, 2},
Li Peng^{1, 2},
Sun Jilei^{1, 2}

1.
Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
2.
Dongguan Neutron Science Center, Dongguan 523803, China

摘要

摘要: 介绍了针对中国散裂中子源(CSNS)的直线到环输运线(LRBT)所设计的条带式束流位置测量(BPM)系统，探头方案以条带式电极为基础进行物理设计及参数优化，并通过机械标定减少机械加工误差，电子学选用商用数据处理方案。此系统在加速器实际运行中有效提供位置信息，对在线测量数据采用奇异值分解(SVD)进行分析，根据分析结果，对束流轨道测量的精度达到预期设计目的，满足物理调束需求。
- 中国散裂中子源 /
- 输运线 /
- 束测 /
- 束流位置测量 /
- 条带式 /
- 奇异值分解
Abstract: This paper introduces the stripline beam position monitor system we designed for the linac to ring beam transport(LRBT) of China Spallation Neutron Source(CSNS). The system's physical design and parameter optimization of monitor are done based on stripline type, mechanical calibration is done to reduce error caused by machining, and the electronic system is using a commercial data processing system. The system gives effective position data in actual accelerator running, and an analysis of online measurement data is done with SVD method. According to the analysis result, accuracy of beam orbit measurement has reached the intended design goal and can meet physical tuning needs.
- CSNS /
- LRBT /
- beam diagnosis /
- beam position monitor /
- stripline /
- SVD method

HTML全文

图 1 条带BPM机械结构图

Figure 1. Mechanical structure of stipline BPM

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图 2 条带BPM横向阻抗计算

Figure 2. Calculation of horizontal impedance in sripline BPM

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图 3 不同张角下仿真信号的二维分布

Figure 3. 2-D distribution of simulation signal in different open angle

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图 4 BPM二维标定结果

Figure 4. 2-D calibration result of BPM

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图 5 BPM电极信号

Figure 5. Signal of BPM electrode

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图 6 输运线BPM分辨率SVD与STD对比

Figure 6. Resolution distribution of BPM in LRBT with SVD and STD

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图 7 BPM和直线CT测量流强对比

Figure 7. Contrast of measured current between BPM and linear current test (CT)

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参考文献(11)

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