Realization of quantum Hall resistance standards at KRISS based on a cryogenic current comparator

Author

Kim, Wan-Seop ; Yu, Kwang-Min ; Kim, Mun-Seog ; Park, Po Gyu ; Kim, Kyu-Tae

Author_Institution

Center for Electr. & Magn., Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea

fYear

2010

fDate

13-18 June 2010

Firstpage

629

Lastpage

630

Abstract

At KRISS we have recently developed a quantum Hall resistance (QHR) standard system adopting a cryogenic current comparator bridge, a He-3 cryostat with a 12 T superconducting magnet, and a home-made air bath with a temperature stability of 23.000°C ± 0.005°C. The performance of the system was verified by calibration of a standard resistor 100 Ω against the QHR at plateau i = 2, R_H(2). The combined relative measurement uncertainty (k = 2) is estimated to be about 3.8×10^-9.

Keywords

calibration; cryogenic electronics; cryostats; current comparators; measurement standards; superconducting magnets; He-3 cryostat; KRISS; combined relative measurement uncertainty; cryogenic current comparator bridge; home-made air bath; quantum Hall resistance standards; standard resistor calibration; superconducting magnet; temperature stability; Bridge circuits; Cryogenics; Electric resistance; Electrical resistance measurement; Measurement standards; Resistors; SQUIDs; Standards development; Superconducting coils; Superconducting magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2010 Conference on

Conference_Location

Daejeon

Print_ISBN

978-1-4244-6795-2

Type

conf

DOI

10.1109/CPEM.2010.5544193

Filename

5544193