Continuous Sub-Kelvin Cooling from an Adiabatic Demagnetization Refrigerator

Kimball, Mark O ; Shirron, Peter J ; Canavan, Edgar R ; James, Bryan L ; Sampson, Michael A ; Letmate, Richard V

关键词: DEMAGNETIZATION;    ADIABATIC CONDITIONS;    REFRIGERATORS;    PAYLOADS;    COOLING;   

RP-ID  :  GSFC-E-DAA-TN59560

学科分类：机械工程学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

We present the current state of development for a continuous magnetic refrigeration system capable of cooling a detector array or other payload to temperatures below 50 mK. This adiabatic demagnetization refrigerator contains four-stages that are cycling continuously yet present a constant ultra-low temperature heat sink at one physical location within the refrigerator. Two different configurations of essentially the same cooler will be presented where the difference is in the physical layout of the stages and the type of heat sink used for the refrigerator's heat rejection.