DocumentCode
2280660
Title
Cryogen-free operation of programmable Josephson voltage standard with a closed-cycle refrigerator
Author
Chong, Yonuk ; Kim, Mun-Seog ; Kim, Wan-Seop ; Kim, Kyu-Tae
Author_Institution
Korea Res. Inst. of Stand. & Sci., Daejeon
fYear
2008
fDate
8-13 June 2008
Firstpage
586
Lastpage
587
Abstract
We report operation of a programmable Josephson voltage standard on a closed-cycle refrigerator. NIST IV PJVS chip is used, and we operate the chip with the fingerboard that is adopted from the existing liquid helium dipping probe. We demonstrate operation at 5.5 K of chip temperature, with a flat Shapiro step in the sub-array of the chip.
Keywords
Josephson effect; measurement standards; programmable circuits; refrigerators; superconducting junction devices; voltage measurement; closed-cycle refrigerator; cryogen-free operation; flat Shapiro step; liquid helium dipping probe; programmable Josephson voltage standard; temperature 5.5 K; Cooling; Critical current; Electromagnetic heating; Fluctuations; Helium; NIST; Refrigeration; Switches; Temperature dependence; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location
Broomfield, CO
Print_ISBN
978-1-4244-2399-6
Electronic_ISBN
978-1-4244-2400-9
Type
conf
DOI
10.1109/CPEM.2008.4574915
Filename
4574915
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