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Cryogenic mechanical design: SPIROU spectrograph

机译:低温机械设计:SPIROU光谱仪

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This paper presents an overview of the PDR level mechanical and opto-mechanical design of the cryogenic spectrographunit of the nIR spectropolarimeter (SPIROU) proposed as a new-generation instrument for CFHT. The design is drivenby the need for high thermo-mechanical stability in terms of the radial velocity (RV) of 1 m/s during one night, with therequirement for thermal stability set at 1 mK/24 hours. This paper describes stress-free design of the cryogenic opticalmounts, mechanical design of the custom-build cryostat, mechanical design of the optical bench, and thermal design for1 mK thermal stability. The thermal budget was calculated using lumped-mass model thermal analysis, implemented inModelica multi-domain modeling language. Discussion of thermal control options to achieve 1 mK thermal stability isincluded.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
机译:本文概述了作为新一代CFHT仪器的nIR分光计(SPIROU)的低温分光光度计单元的PDR级机械和光机械设计。该设计是由对在一个晚上的1 m / s的径向速度(RV)方面的高热机械稳定性的需求所推动的,其热稳定性要求设置为1 mK / 24小时。本文介绍了低温光学安装座的无应力设计,定制低温恒温器的机械设计,光学平台的机械设计以及1 mK热稳定性的热设计。使用在Modelica多域建模语言中实现的集总质量模型热分析来计算热收支。包括对实现1 mK热稳定性的热控制选项的讨论。©(2012)COPYRIGHT光电仪器工程师协会(SPIE)。摘要的下载仅允许个人使用。

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