Thermal control for light-weighted primary mirrors of large ground-based solar telescopes

doi:10.1117/1.JATIS.5.1.014005

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 自适应光学技术研究室（八室）

	Thermal control for light-weighted primary mirrors of large ground-based solar telescopes
	Gu, Naiting 1,2; Li, Cheng 1,2; Cheng, Yuntao 1,2; Rao, Changhui 1,2
刊名	Journal of Astronomical Telescopes, Instruments, and Systems
	2019
卷号	5 期号:1
ISSN号	2329-4124
DOI	10.1117/1.JATIS.5.1.014005
文献子类	期刊论文
英文摘要	A light-weighted primary mirror is the most important optical element for a large ground-based solar telescope. It receives solar radiation of more than 1000 W / m2, of which about 10% is converted into heat energy, bringing in mirror seeing effect and surface shape distortion. Thus, a thermal control system (TCS) is necessary and important. Many studies have discussed the factors that influence the temperature difference between mirror surface and ambient air, but few refer to TCS modeling and optimization for the sake of parameter estimation. A thermal control model for the parameter estimation is proposed. The analytical process and the numerical analysis results of the model on the Chinese large ground-based solar telescope are given. A 60-cm prototype of open solar telescope (POST) is developed, on which practical experiment is taken place. According to the parameters estimated results, we select devices for the TCS of the POST. The experiment results show that the maximum temperature difference was restricted within ±0.5 ° C, despite the temperature variation of the ambient air, whereas without TCS, the maximum temperature difference rises up to 6.5°C. That validates the feasibility and effectiveness of the proposed model, and it can be referred for other large ground-based solar telescopes. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
语种	英语
出版者	SPIE
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9722]
专题	光电技术研究所_自适应光学技术研究室（八室）
作者单位	1.Chinese Academy of Sciences, Institute of Optics and Electronics, Chengdu, China; 2.Chinese Academy of Sciences, Key Laboratory on Adaptive Optics, Chengdu, China
推荐引用方式 GB/T 7714	Gu, Naiting,Li, Cheng,Cheng, Yuntao,et al. Thermal control for light-weighted primary mirrors of large ground-based solar telescopes[J]. Journal of Astronomical Telescopes, Instruments, and Systems,2019,5(1).
APA	Gu, Naiting,Li, Cheng,Cheng, Yuntao,&Rao, Changhui.(2019).Thermal control for light-weighted primary mirrors of large ground-based solar telescopes.Journal of Astronomical Telescopes, Instruments, and Systems,5(1).
MLA	Gu, Naiting,et al."Thermal control for light-weighted primary mirrors of large ground-based solar telescopes".Journal of Astronomical Telescopes, Instruments, and Systems 5.1(2019).