Thermal testing for cryogenic CMB instrument optical design

Thermal testing for cryogenic CMB instrument optical design
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低温 CMB 仪器光学设计的热测试

DOI:
10.1117/12.2629490
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发表时间:
2022
期刊:
Proceedings of the SPIE
影响因子:
--
通讯作者:
Buza, Victor
Buza, Victor
中科院分区:
--
文献类型:
--
作者:
Goldfinger, David C.;Ade, Peter A.;Ahmed, Zeeshan;Amiri, Mandana;Barkats, Denis;Basu Thakur, Ritoban;Beck, Dominic;Bischoff, Colin A.;Bock, James J.;Buza, Victor

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宇宙微波背景的观测依赖于具有冷探测器、读数和光学装置的低温仪器,以提供进行更灵敏测量所需的低噪声性能和仪器稳定性。因此,关键是要优化低温设计的所有方面,以获得必要的性能,具有低温部件和可接受的系统冷却要求。特别是,我们将重点介绍热滤光片和冷光学元件的使用,它们可以减少传递到低温阶段的热负荷。为了测试它们的性能,我们在集成BICEP阵列望远镜的第三个接收器时进行了一系列的现场测量。除了表征接收器的行为外,这些测量还继续改进用于为未来仪器的设计选择提供信息的模型。
Observations of the Cosmic Microwave Background rely on cryogenic instrumentation with cold detectors, readout, and optics providing the low noise performance and instrumental stability required to make more sensitive measurements. It is therefore critical to optimize all aspects of the cryogenic design to achieve the necessary performance, with low temperature components and acceptable system cooling requirements. In particular, we will focus on our use of thermal filters and cold optics, which reduce the thermal load passed along to the cryogenic stages. To test their performance, we have made a series of in situ measurements while integrating the third receiver for the BICEP Array telescope. In addition to characterizing the behavior of this receiver, these measurements continue to refine the models that are being used to inform design choices being made for future instruments.
DOI: --
发表时间: 1990
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影响因子: --
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