Title :
A refrigerated Dewar for the Josephson array voltage calibration system
Author_Institution :
Sandia Nat. Lab., Albuquerque, NM, USA
Abstract :
A refrigerated Dewar has been used successfully with the Josephson array voltage calibration system to reliquefy helium with no degradation of the calibration system´s performance. The design of the Dewar is detailed, and experimental data obtained using it are reported. The independence of the array voltage from temperature has been confirmed to three parts in 10/sup 8/ per degree Kelvin using this Dewar.<>
Keywords :
Josephson effect; calibration; liquid helium; low-temperature techniques; superconducting junction devices; voltage measurement; He; Josephson array voltage calibration; array voltage; refrigerated Dewar; Calibration; Coaxial components; Helium; Josephson junctions; Manufacturing; NIST; Neck; Refrigeration; Tail; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.109947
