高能劳厄单色器晶体压弯性能的研究

张海云; 祝万钱; 秦宏亮; 薛松

doi:10.11889/j.0253-3219.2017.hjs.40.010101

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高能劳厄单色器晶体压弯性能的研究

同步辐射技术及应用 | 更新时间：2021-05-19

- 高能劳厄单色器晶体压弯性能的研究
- Study on crystal bending performance of high energy Laue monochromator
- 核技术 2017年40卷第1期文章编号：010101
- 作者机构：
  
  1.中国科学院上海应用物理研究所张江园区上海 201204
  2.中国科学院大学北京 100049
- 作者简介：
  
  [ "张海云, 男, 1990年出生, 2014年毕业于上海第二工业大学, 现为硕士研究生, 从事精密机械方向研究", "ZHANG Haiyun, male, born in 1990, graduated from Shanghai Second Polytechnic University in 2014, master student, focusing on precision machinery" ]
  薛松, E-mail:xuesong@sinap.ac.cn XUE Song. E-mail:xuesong@sinap.ac.cn
- 基金信息：
  
  国家重大科学仪器设备开发专项(No.Y319071061);中国科学院上海应用物理研究所青年学者发展协作组资助(No.Y329051061)
- DOI：10.11889/j.0253-3219.2017.hjs.40.010101
  中图分类号： TL503.4
- 收稿日期：2016-09-29，
  
  修回日期：2016-11-13，
  
  纸质出版日期：2017-01
- 稿件说明：
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张海云, 祝万钱, 秦宏亮, 等. 高能劳厄单色器晶体压弯性能的研究[J]. 核技术, 2017,40(1):010101

Haiyun ZHANG, Wanqian ZHU, Hongliang QIN, et al. Study on crystal bending performance of high energy Laue monochromator[J]. Nuclear techniques, 2017, 40(1): 010101
张海云, 祝万钱, 秦宏亮, 等. 高能劳厄单色器晶体压弯性能的研究[J]. 核技术, 2017,40(1):010101 DOI： 10.11889/j.0253-3219.2017.hjs.40.010101.

Haiyun ZHANG, Wanqian ZHU, Hongliang QIN, et al. Study on crystal bending performance of high energy Laue monochromator[J]. Nuclear techniques, 2017, 40(1): 010101 DOI： 10.11889/j.0253-3219.2017.hjs.40.010101.

摘要

上海光源二期工程拟建的超硬多功能线站将采用一台弧矢聚焦高能劳厄单色器，晶体压弯机构是单色器的核心部件，晶体弧矢半径与子午半径的优化对单色器的光通量和分辨率有很大影响。本文利用有限元软件分析了影响劳厄晶体压弯性能的主要因素--斜切晶体的各向异性以及晶体的长宽比。通过分析，确定了硅晶体切割边为[011]方向和[0-11]方向，晶体的优化尺寸为90 mm×40 mm×1 mm。硅晶体表面的弧矢和子午面形误差（均方根）分别为3.02 μrad和1.25 μrad，满足设计要求。

Abstract

Background:

A water-cooled high energy double Laue crystal monochromator (DLM) will be employed on ultra-hard applications beamline to be built in phase II project at Shanghai Synchrotron Radiation Facility (SSRF). Its crystal bending performance is very important for satisfying design requirements.

Purpose:

This study aims to find appropriate coupled meridional and sagittal bending of the bender

to obtain optimal the monochromatic beam flux and energy resolution.

Methods:

The rigidity matrix of the crystal was calculated by using MATLAB. Two main factors

anisotropic elasticity of the asymmetric-cut crystal and aspect ratio

are considered to optimize the crystal bendings by finite element analysis (FEA) using ANSYS Workbench.

Results & Conclusion:

Analysis results show the cutting edge of crystal length and width goes along the[011] and[0-11]

direction

respectively. The optimized crystal geometry is 90 mm×40 mm×1 mm. Furthermore

the meridional and sagittal slope errors of the crystal are 3.02 μrad and 1.25 μrad

respectively

which meet the requirements well.

关键词

Keywords

references

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余盛辉 , 薛松 , 祝万钱 , . 弧矢压弯晶面扭曲问题研究 . 核技术 , 2013 . 36 ( 7 ): 070101 DOI: 10.11889/j.0253-3219.2013.hjs.36.070101 http://doi.org/10.11889/j.0253-3219.2013.hjs.36.070101 .

Shenghui YU , Song XUE , Wanqian ZHU , . Study on twist problem of sagittally bent crystal . Nuclear Techniques , 2013 . 36 ( 7 ): 070101 DOI: 10.11889/j.0253-3219.2013.hjs.36.070101 http://doi.org/10.11889/j.0253-3219.2013.hjs.36.070101 .

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