上海软X射线自由电子激光装置直线加速器束流位置测量系统研制

吴桐; 赖龙伟; 俞路阳; 袁任贤; 陈健; 阎映炳; 冷用斌

doi:10.11884/HPLPB202133.210015

上海软X射线自由电子激光装置直线加速器束流位置测量系统研制

doi: 10.11884/HPLPB202133.210015

吴桐^{1, 2,},
赖龙伟^{1, 3, ,},
俞路阳^{1, 3},
袁任贤^{1, 3},
陈健^{1, 3},
阎映炳^{1, 3},
冷用斌^{1, 2, 3}

1.
中国科学院上海应用物理研究所，上海 201800
2.
中国科学院大学，北京 100049
3.
中国科学院上海高等研究院，上海 201210

基金项目: 国家重点研发计划项目（2016YFA0401903，2016YFA0401900）中国科学院青年创新促进会项目（2019290）

详细信息

作者简介:
吴　桐（1993—），男，博士研究生，核技术及应用专业，从事束流检测与控制研究

通讯作者:
赖龙伟（1985—），男，博士，副研究员，核技术及应用专业

中图分类号: TL506
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-15
- 修回日期: 2021-03-31
- 网络出版日期: 2021-04-16
- 刊出日期: 2021-05-15

Design of stripline beam position monitor for Shanghai soft X-ray free electron laser

Wu Tong^{1, 2
,},
Lai Longwei^{1, 3
, ,},
Yu Luyang^{1, 3},
Yuan Renxian^{1, 3},
Chen Jian^{1, 3},
Yan Yingbing^{1, 3},
Leng Yongbin^{1, 2, 3}

1.
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China

摘要

摘要: 上海软X射线自由电子激光装置（SXFEL）作为中国第一台工作在软X射线波段的第四代光源，其产生的激光具备短波长、全相干、超高亮度、超短脉冲长度等优点，预期将会在基础科学研究领域中发挥出重要的作用。基于直线加速器的特点和需求，在SXFEL的注入器与直线加速段上选择了条带型束流位置测量系统（SBPM）作为束团位置测量工具。该系统由SXFEL束测团队自主研发设计，由条带探头、前端信号调理电子学与专用数字信号束流位置处理器（DBPM）组成，系统设计上借鉴上海同步辐射光源（SSRF）的同类型设备，并根据SXFEL的特点做了进一步的优化，束流实验结果表明该系统位置测量系统分辨率好于5.7 μm@188 pC，达到国际先进水平，满足了SXFEL注入器和直线加速器段对束流位置测量分辨率的设计要求。
- 上海软X射线自由电子激光 /
- 束测 /
- 束流位置测量 /
- 条带型 /
- 数字信号处理
Abstract: Shanghai Soft X-ray Free Electron Laser (SXFEL) is the first fourth-generation light source in China that can work in soft X-ray band. With the advantages of short wavelength, full coherence, ultra-high brightness, and ultra-short pulse, it is expected to play an important role in basic science research. Based on the characteristics of the linear accelerator, the stripline beam position monitor (SBPM) was selected as the beam position measurement tool in the injection section and the straight section. The system is mainly composed of the probe, the front-end electronics system, and the digital beam position monitor (DBPM). The design draws on the same type of device from Shanghai Synchrotron Radiation Facility (SSRF) and is further optimized according to the characteristics of SXFEL. Finally, the beam experiment results show that the resolution reaches 5.7 μm@188 pC, which meets the requirements for beam position resolution of SXFEL.
- Shanghai Soft X-ray Free Electron Laser /
- beam diagnosis /
- beam position monitor /
- stripline /
- signal processing

HTML全文

图 1 条带型束流位置探头示意图

Figure 1. Schematic of stripline BPM probe

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图 2 SBPM系统硬件组成示意图

Figure 2. Diagram of SBPM system hardware composition

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图 3 探头信号频域响应

Figure 3. Signal frequency domain response

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图 4 真空室半径与特性阻抗的关系

Figure 4. Function of vacuum chamber radius and impedance

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图 5 射频前端调理模块示意图

Figure 5. Schematic of radio frequency signal conditioning electronics

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图 6 数字BPM电子学系统构架

Figure 6. Frame of signal processing unit in digital BPM

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图 7 ADC实测波形

Figure 7. Waveform measured by ADC

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图 8 软件系统示意图

Figure 8. Software system diagrams

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图 9 在线测试系统示意图

Figure 9. Online test system

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图 10 188pC时束团位置分辨率和流强分辨率测量结果

Figure 10. Horizontal position resolution and current intensity resolution@188 pC

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表 1 位置分辨率测量结果

Table 1. Stripline beam position monitor position resolution

K/mm charge/pC $ \Delta x $/μm $ \Delta y $/μm

5.24 188 5.7 4.9
50 9.6 9.1
9 51.7 65.0

下载: 导出CSV

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