Analysis of thermal influence on optical fiber positioning device of LAMOST

Yi Jin; Rui Zhang; Yonggang Gu; Chao Zhai

doi:10.1117/12.925956

13 September 2012 Analysis of thermal influence on optical fiber positioning device of LAMOST

Yi Jin, Rui Zhang, Yonggang Gu, Chao Zhai

Proceedings Volume 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II; 84501B (2012) https://doi.org/10.1117/12.925956
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Many heating units exist on the fiber positioning device of LAMOST, and the heat has certain effect on the observation of telescope. Experimental and theoretical analysis methods are proposed in this paper to study the heat effect on the focal plane caused by heating units. In this paper, we mainly describe the experimental part. A temperature acquisition system is established on a simplified focal plane on which a group of fiber positioning units are installed. The thermal imager is used to determine the heating parts of the fiber positioning units. Thermocouples are bonded on the surface of heating parts and focal plane to sense the temperature change and the curve of the results are shown in LabVIEW. Temperature data obtained by the experiment is applied as initial conditions of theoretical analysis and a comparison with the analysis result. The thermal analysis software I-DEAS will be used to analyze the temperature field of the simplified focal plane, then a comparison will be made between experimental and theoretical analysis to confirm the rationality of simulation models for further research of LAMOST fiber positioning device. Based on the above research objectives, arrange the experiment. The research results have instructive significance for the LAMOST focal plane cooling solutions.

Citation Download Citation

Yi Jin, Rui Zhang, Yonggang Gu, and Chao Zhai "Analysis of thermal influence on optical fiber positioning device of LAMOST", Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84501B (13 September 2012); https://doi.org/10.1117/12.925956

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