Quick-Replacement High-Temperature Superconducting Current Leads for Use in a Research Cryostat

Kimball, Mark O ; Sampson, Michael A ; Canavan, Edgar R ; Letmate, Richard V

关键词: CRYOSTATS;    ADIABATIC DEMAGNETIZATION COOLING;    HIGH TEMPERATURE SUPERCONDUCTORS;    ELECTRIC CONDUCTORS;    REPLACING;    FASTENERS;    CLAMPS;    GLASS FIBERS;    LAMINATES;    LOW TEMPERATURE TESTS;    SOLDERING;   

RP-ID  :  GSFC-E-DAA-TN70819

学科分类：工程和技术（综合）

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来源: NASA Technical Reports Server

【 摘 要 】

We report the use of a series of high-temperature superconducting leads in a cryostat that require no soldering to replace in the event of a failed lead. The temperature range spanned by the leads is 50 to 3 degrees Kelvin and they typically carry currents up to 4 amperes although they have a much higher capacity in this temperature range. The leads are integrated into the cryostat by clamping both ends to gold-plated copper pads. Support of the leads over the 25-centimeter length is provided by a simple G10 strong back. Details of the clamping interface, measurements of joint resistances, and other interesting observations will be discussed.