The IEN CCC bridge to scale the quantized Hall resistance to 1-Ω standards

Author

Boella, Giorgio ; Mihai, Iulian ; Marullo-Reedtz, Giancarlo ; Capra, Pier Paolo ; Gasparotto, Enrico

Author_Institution

Inst. Elettrotecnico Nazionale "G. Ferraris", Italy

Volume

54

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

588

Lastpage

591

Abstract

A resistance bridge based on a cryogenic current comparator has been built at the Istituto Elettrotecnico Nazionale "G. Ferraris" (IEN). The use of this bridge simplifies the scaling down from the quantized Hall resistance to decadic standard resistors, at the same time reducing the measurement uncertainty. The bridge is described and the result of a comparison at the level of 100 Ω, with the traditional scaling method used at IEN is reported. The two methods agree well within their uncertainties, for which detailed uncertainty budgets are given.

Keywords

bridge instruments; cryogenic electronics; current comparators; electric resistance measurement; measurement standards; measurement uncertainty; quantum Hall effect; 1 ohm; CCC bridge; IEN; Istituto Elettrotecnico Nazionale; cryogenic current comparator; decadic standard resistors; measurement uncertainty; quantized Hall resistance; resistance bridge; resistance measurements; traditional scaling method; Bridges; Cryogenics; Electric resistance; Electrical resistance measurement; Lead; Measurement standards; Multifilamentary superconductors; Resistors; SQUIDs; Superconducting coils; Cryogenic current comparators; quantum Hall resistance; resistance bridges; resistance measurements;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2004.843404

Filename

1408240