A comparative study of the thermal performance of primary mirror at the four typical sites

doi:10.1016/j.ijleo.2018.05.008

	A comparative study of the thermal performance of primary mirror at the four typical sites
	Wang, Hairen1,2 ; Cheng, Jingquan1,2 ; Lou, Zheng1,2 ; Liang, Ming 1,2; Zheng, Xianzhong1,2 ; Zuo, Yingxi1,2 ; Yang, Ji1,2
刊名	OPTIK
	2018
卷号	174 页码:727-738
关键词	Heat dissipation analysis Primary mirror Steady thermal analysis Transient thermal analysis Wide field survey telescope
ISSN号	0030-4026
DOI	10.1016/j.ijleo.2018.05.008
通讯作者	Wang, Hairen(Hairenwang@pmo.ac.cn)
英文摘要	We propose a heat dissipation model to assess whether the material and thickness of the primary mirror of a telescope design exceed the upper constraint of the requirement in terms of the four typical sites: Dome A of Antarctica, Ali of Tibet, Mauna Kea of Hawaii and Chajnantor of Chile. It accounts for thermal conduction, heat convection, and radiation heat transfer whose effective sky temperature depends on the ambient air temperature, vapor pressure, and relative humidity. In addition, the values of the heat convection coefficient, sharply decreasing due to the low atmospheric pressure, are considered. We apply the model to analyze the thermal performance of a 2.5 m primary mirror of a wide field survey telescope (WFST). Under the conditions of the four typical sites in the world, a comparative study of WFST for two thicknesses of the primary mirror is presented via steady thermal analysis and transient thermal analysis using the proposed model. The results reveal that all RMS errors on the mirror surface of primary mirrors are smaller than 5 nm, which fulfill the performance requirements of WFST, and demonstrate that the proposed model is useful for evaluating the heat dissipation of the primary mirror on those sites.
WOS关键词	VAPOR-PRESSURE FORMULATION ; TELESCOPE ; OPTICS
WOS研究方向	Optics
语种	英语
出版者	ELSEVIER GMBH, URBAN & FISCHER VERLAG
WOS记录号	WOS:000447247700092
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/21156]
专题	中国科学院紫金山天文台
通讯作者	Wang, Hairen
作者单位	1.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hairen,Cheng, Jingquan,Lou, Zheng,et al. A comparative study of the thermal performance of primary mirror at the four typical sites[J]. OPTIK,2018,174:727-738.
APA	Wang, Hairen.,Cheng, Jingquan.,Lou, Zheng.,Liang, Ming.,Zheng, Xianzhong.,...&Yang, Ji.(2018).A comparative study of the thermal performance of primary mirror at the four typical sites.OPTIK,174,727-738.
MLA	Wang, Hairen,et al."A comparative study of the thermal performance of primary mirror at the four typical sites".OPTIK 174(2018):727-738.