Analysis of thermal distortion of crystal of DCM cooled by liquid nitrogen

WANG Naxiu  ZHANG Yinji

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Analysis of thermal distortion of crystal of DCM cooled by liquid nitrogen

更新时间：2021-03-12

- Analysis of thermal distortion of crystal of DCM cooled by liquid nitrogen
- NUCLEAR TECHNIQUES Issue 6, (2002)
- 作者机构：
  
  1. 中国科学院上海原子核研究所
  2. 中国科学院上海原子核研究所,上海,201800
- 作者简介：
- 基金信息：
- DOI：
  CLC： O73
- Published：01 June 2002
- 稿件说明：
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[1]王纳秀,张映箕.液氮冷却单色仪晶体的热应变分析[J].核技术,2002(06):401-407.

WANG Naxiu ZHANG Yinji. Analysis of thermal distortion of crystal of DCM cooled by liquid nitrogen[J]. Nuclear techniques, 2002, (6): 401-407.
[1]王纳秀,张映箕.液氮冷却单色仪晶体的热应变分析[J].核技术,2002(06):401-407. DOI：

WANG Naxiu ZHANG Yinji. Analysis of thermal distortion of crystal of DCM cooled by liquid nitrogen[J]. Nuclear techniques, 2002, (6): 401-407. DOI：

摘要

本文报道了设计中的上海同步辐射装置扭摆器光源光束线站所用双晶单色仪的第一晶体液氮冷却的ANSYS有限元分析结果

晶面倾斜误差RMS值为 2 .33μrad ;尝试了用光学追迹的SHADOW软件计算晶体受光面变形对晶体摇摆曲线展宽的贡献

结果表明液氮冷却晶体的参数能够满足同步辐射光束线站对单色仪晶体的要求

晶体冷却设计方案是可行的

用SHADOW软件模拟计算晶体摇摆曲线的方法是预言晶体光学参数的行之有效的方法。

Abstract

The FEA result of the first crystal of double crystal monochromator (DCM) at SSRF

which is exposed to Wiggler source and cooled by liquid nitrogen was reported. The slope error of the surface exposed to high thermal load is 2.33μrad. We also try to calculate the full width at half maximum (FWHM)of the crystal rocking curve by SHADOW software. The result indicates that design of cooling system and method are quite enough to meet with the requirement of DCM. And it is an efficient way of predicting optical parameter of DCM by calculating the FWHM of rocking curve of crystal with thermal distortion by SHADOW.

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