Alternate architecture for the Origins Space Telescope
Alternate architecture for the Origins Space Telescope
复制标题
起源太空望远镜的替代架构
DOI：
10.1117/1.jatis.7.1.011006
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
T. Nguyen
中科院分区：
文献类型：
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作者：
J. Arenberg;J. Pohner;M. Petach;Ryan Hall;Jeffrey Bautista;M. Michaelian;T. Nguyen
抽象的。我们报告了我们对詹姆斯·韦伯太空望远镜 (JWST) 的设计适应起源太空望远镜的需求和要求的调查。介绍并详细介绍了为实现 Origins 4.5-K 设计温度所需对 JWST 设计的设备和绝缘进行的修改。韦伯热模型根据 Origins 设计进行了修改，用于预测 18 K 和 4.5 K 的热负荷。我们还描述了 JWST 中红外仪器的低温冷却器所需的开发，以达到 Origins 所需的温度。讨论了各种改进型制冷机的功能。我们展示了需要三个改进的冷却器才能实现 Origins 所需的性能。最后，我们展示了基线仪器和所需的冷却器可以适应韦伯架构中的体积、质量和功率。
Abstract. We report on our investigation into adapting the design of the James Webb Space Telescope (JWST) to the needs and requirements of the Origins Space Telescope. The modifications needed to the equipment and insulation of the JWST design to achieve the 4.5-K design temperature for Origins are introduced and detailed. The Webb thermal model is modified to the Origins design and used to predict the heat loads at 18 and 4.5 K. We also describe the needed development of the JWST Mid-Infrared Instrument’s cryocooler needed to reach the temperature necessary for Origins. The capabilities of the various modified cryocoolers are discussed. We show that three modified coolers are needed to achieve the performance required for Origins. Finally, we show that the baseline instruments and needed coolers can be accommodated for volume, mass, and power in the Webb architecture.