Cryogenic Thermal Conductance Measurements of Candidate Materials and Components for WFIRST

Li, Xiaoyi ; Tuttle, James ; Jahromi, Amir ; Boyle, Robert ; Hawks, John ; Gygax, John ; Thorn, Sheri ; Emmett, Thomas ; Shur, Nicholas ; Jackson, Clifton(Stinger Ghaffarian Technologies Inc (SGT Inc), Greenbelt, MD, United States)

关键词: CRYOGENIC COOLING;    CRYOGENIC TEMPERATURE;    HIGH PRESSURE;    HIGH TEMPERATURE;    INFRARED DETECTORS;    INFRARED TELESCOPES;    MECHANICAL PROPERTIES;    OPERATING TEMPERATURE;    PYROLYTIC GRAPHITE;    REUSABLE HEAT SHIELDING;    SURFACE ROUGHNESS;    TEMPERATURE GRADIENTS;    THERMAL CONDUCTIVITY;    WIDE-FIELD INFRARED SURVEY TELESCOPE (WFIRST);   

RP-ID  :  GSFC-E-DAA-TN70485

学科分类：工程和技术（综合）

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Wide Field Infrared Survey Telescope (WFIRST) is the next generation astrophysics flagship mission. The primary mission goal is to probe the expansion history of the Universe and the growth of cosmic structure. The wide field instrument has an operating temperature of 90K. We measured the thermal conductance of several candidate materials and components for thermal subsystem of the instrument at cryogenic temperatures. This paper describes these measurements and presents the results.