First Direct Comparison of a Cryocooler-Based Josephson Voltage Standard System at 10 V

被引：11

作者：

Schubert, Marco ^{[1
]}

Starkloff, Michael ^{[1
]}

Meyer, Matthias ^{[1
]}

Wende, Gerd ^{[2
]}

Anders, Solveig ^{[2
]}

Steinbach, Birger ^{[2
]}

May, Torsten ^{[2
]}

Meyer, Hans-Georg ^{[2
]}

机构：

[1] Supracon AG, D-07745 Jena, Germany

[2] Inst Photon Technol, D-07745 Jena, Germany

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2009年 / 58卷 / 04期

关键词：

Cooling; cryogenic electronics; Josephson junction array (JJA); Josephson junctions; Josephson voltage standard; ARRAYS;

D O I：

10.1109/TIM.2008.2008466

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A commercially available and fully automated 10-V Josephson voltage standard system with a liquid helium free cooling has been developed as a result of the cooperation between the Institute of Photonic Technology and Supracon AG, both in Jena, Germany. The system operates with an array of 19 700 superconductor-insulator-superconductor Josephson tunnel junctions installed in a pulse tube cooler. A stable operation is achieved by the proper integration of the voltage standard circuit to the cold stage of the cryocooler. Different operation setups are discussed. A direct comparison of a cryocooler-based Josephson voltage standard system versus a liquid-helium-based system was performed at a voltage level of 10 V. We obtained a voltage difference of 1.3 nV with a total combined uncertainty of 2 nV. This corresponds to a relative uncertainty of 2 x 10(-10).

引用

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页码：816 / 820

页数：5

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