Recent system advances in Josephson primary voltage standards

被引：0

作者：

Pambianchi, MS ^{[1
]}

Coughlin, J ^{[1
]}

Robertazzi, R ^{[1
]}

Hunt, RT ^{[1
]}

Bent, BR ^{[1
]}

机构：

[1] Hypres Inc, Elmsford, NY 10523 USA

来源：

SUCCESS IN THE 21ST CENTURY DEPENDS ON MODERN METROLOGY, VOLS 1-2 | 1997年

关键词：

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Efforts at HYPRES to reduce the cost and simplify the operation of Josephson primary voltage standard systems have resulted in several improvements over systems currently available. We describe the development of a compact, air-cooled, closed cycle refrigerator, operating on standard 110V power, to replace the helium dewar currently used to reach cryogenic temperatures. We also demonstrate a low-cost superconducting digital frequency counter, configured to operate beside the voltage standard chip. It replaces the high-cost room-temperature frequency counter currently in use for accurate frequency measurement. These innovations represent substantial progress toward broader acceptance and utilization of the Josephson primary voltage standard worldwide.

引用

页码：345 / 352

页数：8