上海光源小角X射线散射线站光束稳定性研究

洪春霞; 杨春明; 周平; 滑文强; 边风刚; 王劼

doi:10.11889/j.0253-3219.2018.hjs.41.120101

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上海光源小角X射线散射线站光束稳定性研究

同步辐射技术及应用 | 更新时间：2021-05-19

- 上海光源小角X射线散射线站光束稳定性研究
- Study on X-ray beam stabilization of BL16B1 at SSRF
- 核技术 2018年41卷第12期文章编号：120101
- 作者机构：
  
  中国科学院上海应用物理研究所上海 201800
- 作者简介：
  
  [ "洪春霞, 女, 1984年出生, 2009年毕业于南京航空航天大学, 现为硕士研究生, 研究领域为同步辐射光束线控制系统研究和光束线稳定性研究", "HONG Chunxia, female, born in 1984, graduated from Nanjing University of Aeronautics and Astronautics in 2009, master student, focusing on synchrotron radiation beamline motion control system and beam stabilization" ]
  边风刚, E-mail:bianfenggang@sinap.ac.cn BIAN Fenggang, E-mail:bianfenggang@sinap.ac.cn
- 基金信息：
  
  国家自然科学基金(U1732123)
- DOI：10.11889/j.0253-3219.2018.hjs.41.120101
  中图分类号： TL99
- 收稿日期：2018-08-28，
  
  修回日期：2018-10-01，
  
  纸质出版日期：2018-12-10
- 稿件说明：
移动端阅览
洪春霞, 杨春明, 周平, 等. 上海光源小角X射线散射线站光束稳定性研究[J]. 核技术, 2018,41(12):120101

Chunxia HONG, Chunming YANG, Ping ZHOU, et al. Study on X-ray beam stabilization of BL16B1 at SSRF[J]. Nuclear techniques, 2018, 41(12): 120101
洪春霞, 杨春明, 周平, 等. 上海光源小角X射线散射线站光束稳定性研究[J]. 核技术, 2018,41(12):120101 DOI： 10.11889/j.0253-3219.2018.hjs.41.120101.

Chunxia HONG, Chunming YANG, Ping ZHOU, et al. Study on X-ray beam stabilization of BL16B1 at SSRF[J]. Nuclear techniques, 2018, 41(12): 120101 DOI： 10.11889/j.0253-3219.2018.hjs.41.120101.

摘要

在同步辐射光源，实验站光束稳定性是衡量光束线的重要指标，它是用户获得高质量实验数据的前提。为了评价上海光源小角X射线散射实验站（BL16B1）光束稳定性，首先在样品台附近安装用于检测光束中心位置和光束强度的IC-500-50位置灵敏电离室，同时使用CAENels公司的TetrAMM四象限皮安计实时检测IC-500-50电流，然后通过移动Kohzu垂直方向电机改变电离室与入射光束的相对位置，从而测试IC-500-50的线性范围和灵敏度等主要性能参数，最后通过静止保存电流值计算光束中心位置并最终得到BL16B1光束稳定性指标。测试结果表明：BL16B1垂直方向光束中心位置抖动的标准偏差为0.8%，光强抖动的标准偏差为0.44%，最终计算分析得知1%之内的不稳定性满足光束线稳定性设计指标（10%之内）的要求。

Abstract

Background

The beam stability is very important to each beamline at synchrotron radiation facility

it is the premise for users to obtain high-quality experimental data.

Purpose

This study aims to test the beam stability of BL16B1 at Shanghai synchrotron radiation facility (SSRF) by the beam position monitor (BPM) which is used to detect the beam center position and intensity.

Methods

The IC-500-50 position sensitive ionization chamber is installed near the sample stage

the real-time current is measured by the TetrAMM 4-channel fast interface bipolar picoammeter made by CAENels company. The position sensitivity and linearity of IC-500-50 and the beam stability of BL16B1 are measured by changing the relative position of the ionization chamber and the incident beam.

Results

The results show that the standard deviation of the center beam position of the beam along the vertical direction is 0.8%

and the standard deviation of the light intensity is 0.44%.

Conclusion

The analysis shows that the instability within 1% meets the design requirements of beam stability (within 10%).

关键词

Keywords

references

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