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Optimizing the cleanliness in multi-segment disk amplifiers based on vector flow schemes

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Abstract

The objective of maintaining the cleanliness of the multi-segment disk amplifier in Shenguang-II (SG-II) is to reduce laser-induced damage for optics. The flow field of clean gas, which is used for the transportation of contaminant particles, is a key factor affecting the cleanliness level in the multi-segment disk amplifier. We developed a gas–solid coupling and three-dimensional flow numerical simulation model. The three-dimensional and two-phase flow model is verified by the flow-field smog experiment and the particle concentration measurement experiment with the 130-disk amplifier in SG-II. By optimizing the boundary conditions with the same flow rate, the multi-inlet vector flow scheme can not only effectively reduce the purging time, but also prevent the reverse diffusion of contaminant particles in the multi-segment disk amplifier and the deposition of contaminant particles on the surface of the Nd:glass.

Newport宣传-MKS新实验室计划
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DOI:10.1017/hpl.2017.36

基金项目:This project is supported by the National Natural Science Foundation of China (Grant No. 61505228).

收稿日期:2017-10-05

录用日期:2017-11-16

网络出版日期:2017-12-01

作者单位    点击查看

Zhiyuan Ren:Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Jianqiang Zhu:Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Zhigang Liu:Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Xiaowei Yang:Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

联系人作者:Zhiyuan Ren(renzhiyuan@siom.ac.cn)

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引用该论文

Zhiyuan Ren, Jianqiang Zhu, Zhigang Liu, and Xiaowei Yang, "Optimizing the cleanliness in multi-segment disk amplifiers based on vector flow schemes," High Power Laser Science and Engineering 6(1), e1 (2018)

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