Mechanical Measurements of the ALMA Prototype Antennas

Greve, A.; Mangum, J. G.

doi:10.1109/map.2008.4562258

Cited by 22 publications

(13 citation statements)

References 6 publications

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“…Before the construction, NRAO and ESO built one each prototype antenna for the 12 m Array to evaluate their performance at the ALMA Test Facility (ATF) in the NRAO VLA observatory in New Mexico, U.S.A. 76 , 77 ) NAOJ also constructed a prototype 12 m antenna for the Total Power Array and tested its performance at the ATF. 78 ) It turned out that all these prototype antennas meet specifications for ALMA.…”

Section: Instrumental Developments For Almamentioning

confidence: 99%

From Nobeyama Radio Observatory to the international project ALMA —Evolution of millimeter and submillimeter wave astronomy in Japan—

Ishiguro

Chiba

Sakamoto

2022

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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The establishment of the Nobeyama Radio Observatory (NRO) in 1982 was an important event that greatly influenced the subsequent development of Japanese astronomy. The 45 m radio telescope and the Nobeyama Millimeter Array (NMA) pushed Japanese radio astronomy to the forefront of the world. As a plan beyond the Nobeyama telescopes, the Japanese radio astronomy community considered a large array to achieve unprecedented resolution at millimeter and submillimeter wavelengths under the project name of the Large Millimeter and Submillimeter Array (LMSA). After long and patient discussions and negotiations with the United States and Europe, the LMSA plan eventually led to the ALMA (Atacama Large Millimeter/submillimeter Array) as an international joint project, and the ALMA was inaugurated in 2013. This paper reviews the process from the establishment of the NRO to the realization of the ALMA, including planning of the LMSA, international negotiations, site survey, instrumental developments, and initial science results.

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Section: Instrumental Developments For Almamentioning

confidence: 99%

From Nobeyama Radio Observatory to the international project ALMA —Evolution of millimeter and submillimeter wave astronomy in Japan—

Ishiguro

Chiba

Sakamoto

2022

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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“…A general layout strategy is to arrange the temperature sensors uniformly according to the mass, volume and surface area of the telescope's structure, whereby 89 temperature sensors were arranged throughout the VertexRSI 12-m prototype telescope. The sensors on the fork support and backup structure were respectively determined on the basis of their approximately equal surface areas and volume [127]. Figure 6a gives the temperature measuring points layout of the VertexRSI 12-m prototype telescope.…”

Section: Experimental Testmentioning

confidence: 99%

Non-Uniform Temperature Fields and Effects of Steel Structures: Review and Outlook

Chen

Qian

2020

Applied Sciences

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Due to the dynamic coupling effects of solar radiation, longwave radiation, convective heat transfer, shadows, and other factors, the temperature field and effect of steel structures are significantly non-uniform, differing from traditional concepts that regard the temperature variation of steel structures as a slow and uniform progress. This difference can hinder the correct understanding of the thermal behavior of steel structures and ignore some potential safety hazards. This paper provides a review of the studies for the non-uniform temperature field and effect of steel structures, and presents some outlooks on future developments on the basis of the current research situation. A summary of research on the temperature field and effect of space structures, bridges and radio telescopes initially establishes the basic cognitive framework for this field. In addition, then, the basic principles of the numerical simulation of temperature fields are introduced through heat transfer mechanism, and the experimental test methods of temperature and its effects are described based on typical test cases. Finally, with a view to the future, some suggestions and opinions are provided in consideration of deficiencies in the current research status. This paper hopes to provide some valuable references for future research in this field through research summary, method introduction and outlook.

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“…目前国内外重点望远镜的面板结构包括: 碳纤维蜂窝、铝蒙皮蜂窝、电铸镍蜂窝、铝合金板、开槽筋胶粘、铝蒙皮型材铆接等 [4][5][6][7][8] . 根据天线口径与工作频率选择相应结构, 如: ALMA12 m [9] , LMT50 m [10,11] 天线工作频率分别达到950, 300 GHz, 其面板精度分别为8, 20 μm, 采用成型工艺复杂的电铸镍蜂窝结构能够满足需求. 对GBT100 m [12][13][14][15][16] [7,8,17,18] )开展了高精度大面板研制工作.…”

Section: 常见高精度反射面结构及其制造技术unclassified

Development challenges for the Xinjiang 110 m radio telescope (QTT) high accuracy panel structures

Wen

Wang

et al. 2017

Sci. Sin.-Phys. Mech. Astron.

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Mechanical Measurements of the ALMA Prototype Antennas

Cited by 22 publications

References 6 publications

From Nobeyama Radio Observatory to the international project ALMA —Evolution of millimeter and submillimeter wave astronomy in Japan—

From Nobeyama Radio Observatory to the international project ALMA —Evolution of millimeter and submillimeter wave astronomy in Japan—

Non-Uniform Temperature Fields and Effects of Steel Structures: Review and Outlook

Development challenges for the Xinjiang 110 m radio telescope (QTT) high accuracy panel structures

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