Structure design and optimization of high heat load absorbers in SSRF front-end

Yong-jun LI; Min ZHANG; Song XUE; Dan-dan JIA; Li-min JIN

doi:10.3788/OPE.20162407.1640

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Structure design and optimization of high heat load absorbers in SSRF front-end

Micro/Nano Technology ang Fine Mechanics | 更新时间：2020-08-13

- Structure design and optimization of high heat load absorbers in SSRF front-end
- Optics and Precision Engineering Vol. 24, Issue 7, Pages: 1640-1646(2016)
- 作者机构：
  
  1.中国科学院上海应用物理研究所, 上海 201204
  2.中国科学院大学, 北京 100049
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162407.1640
  CLC： TL632
- Received：18 January 2016，
  
  Published：2016-07
- 稿件说明：
移动端阅览
Yong-jun LI, Min ZHANG, Song XUE, et al. Structure design and optimization of high heat load absorbers in SSRF front-end[J]. Optics and precision engineering, 2016, 24(7): 1640-1646.
DOI：

Yong-jun LI, Min ZHANG, Song XUE, et al. Structure design and optimization of high heat load absorbers in SSRF front-end[J]. Optics and precision engineering, 2016, 24(7): 1640-1646. DOI： 10.3788/OPE.20162407.1640.

摘要

为了有效处理上海光源前端挡光器接收的高热负载，研究了挡光器的结构设计及其优化方法。选用高导热性、高强度的GlidCop AL-15制造挡光器吸收体，采用直接水冷和掠入射结构提高其热缓释能力。以对流换热系数和压力降为评价指标，选用佩图克方程和达尔西-韦斯巴赫方程优化冷却水路，通过热分析得到了不同参数下挡光器的温度和热应力分析结果，从而确定了挡光器的结构设计优化参数。优化后挡光器的水路直径为6 mm，水路到光照面的距离为9 mm，光照面接线处圆角≥2 mm，且水路与光束方向基本平行。与初始结构相比，优化后挡光器的最高整体温度和最高冷却壁温度分别下降约8%和1/4，最大等效应力降低了1/2左右，完全满足上海光源前端部件的设计要求。目前，应用优化参数设计的挡光器已应用于上海光源实际工程中。

Abstract

To handle the high heat load obtained by photon absorbers located in the front-end of Shanghai Synchrotron Radiation Facility (SSRF)

the structure design and optimization of photon absorbers were researched. The dispersion strengthened copper called GlidCop AL-15 was used to manufacture the absorbers. Direct water cooling and grazing incidence structures were used to improve thermal controlled-release ability of the front-end photon absorbers. The Petukhov formula and Darcy-Weisbach formula were selected to optimize cooling water channels. After thermal analysis with ANSYS for the temperature and thermal stress distributions of photon absorbers with different structure parameters

the structure optimization parameters of photon absorbers were determined. It shows that the diameter of cooling channels is 6 mm

the distance of photon confining surfaces to cooling channel walls is 9 mm

corner radiuses of two adjacent photon confining surfaces are bigger than 2 mm and the directions of cooling channels are parallel to the beam approximately. As compared to the original ones

the maximum temperatures of the photon absorbers and their cooling channel walls have declined by 8% and 1/4 respectively

the maximum equivalent stresse is only by half of the original ones. These results entirely satisfy the design requirements of SSRF front-end.

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