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Conceptual design studies of the 5m terahertz antenna for Dome A, Antarctica
Yang, Ji1,2; Zuo, Ying-Xi1,2; Lou, Zheng1,2; Cheng, Jing-Quan1,2; Zhang, Qi-Zhou3; Shi, Sheng-Cai1,2; Huang, Jia-Sheng3; Yao, Qi-Jun1,2; Wang, Zhong3
AbstractAs the highest, coldest and driest place in Antarctica, Dome A provides exceptionally good observing conditions for ground-based observations over terahertz wavebands. The 5m Dome A Terahertz Explorer (DATE5) has been proposed to explore new terahertz windows, primarily over wavelengths between 350 and 200 mu m. DATE5 will be an open-air, fully-steerable telescope that can function by unmanned operation with remote control. The telescope will be able to endure the harsh polar environment, including high altitude, very low temperature and very low air pressure. The unique specifications, including high accuracies for surface shape and pointing and fully automatic year-around remote operation, along with a stringent limit on the periods of on-site assembly, testing and maintenance, bring a number of challenges to the design, construction, assembly and operation of this telescope. This paper introduces general concepts related to the design of the DATE5 antenna. Beginning from an overview of the environmental and operational limitations, the design specifications and requirements of the DATE5 antenna are listed. From these, major aspects on the conceptual design studies, including the antenna optics, the backup structure, the panels, the subreflector, the mounting and the antenna base structure, are explained. Some critical issues of performance are justified through analyses that use computational fluid dynamics, thermal analysis and de-icing studies, and the proposed approaches for test operation and on-site assembly. Based on these studies, we conclude that the specifications of the DATE5 antenna can generally be met by using enhanced technological approaches.
KeywordDome a, Antarctica Antennas Astronomy Telescopes Terahertz
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000327875500010
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
3.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
Recommended Citation
GB/T 7714
Yang, Ji,Zuo, Ying-Xi,Lou, Zheng,et al. Conceptual design studies of the 5m terahertz antenna for Dome A, Antarctica[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(12):1493-1508.
APA Yang, Ji.,Zuo, Ying-Xi.,Lou, Zheng.,Cheng, Jing-Quan.,Zhang, Qi-Zhou.,...&Wang, Zhong.(2013).Conceptual design studies of the 5m terahertz antenna for Dome A, Antarctica.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(12),1493-1508.
MLA Yang, Ji,et al."Conceptual design studies of the 5m terahertz antenna for Dome A, Antarctica".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.12(2013):1493-1508.
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