Quality Assurance for Josephson Array Voltage Standards

Author

Zhou, Yinzhu ; Chua, Sze Wey ; Lee, Jinni ; Shan, Yueyan

Author_Institution

Nat. Metrol. Centre, Agency for Sci., Technol. & Res. (A*STAR), Singapore, Singapore

Volume

60

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

2578

Lastpage

2583

Abstract

A series of quality assurance (QA) procedures for the Josephson array voltage standard (JAVS) has been implemented to improve the efficiency and quality of dc voltage measurements in the National Metrology Centre, Agency for Science, Technology, and Research (A*STAR), Singapore. Periodic direct comparisons between two JAVS systems are required in the QA procedure to ensure accurate representation of the volt for calibration of secondary standards. QA-oriented setup and procedure are developed for better control of microwave power and locking frequency when using the millimeter-wave synthesizer. The analysis-of-variance method and the Monte Carlo method are implemented in data reporting and uncertainty evaluation processes.

Keywords

measurement standards; voltage measurement; Josephson array voltage standards; Monte Carlo method; analysis-of-variance method; dc voltage measurements; locking frequency; microwave power; millimeter-wave synthesizer; quality assurance; Analysis of variance; Arrays; Measurement uncertainty; Standards; Synthesizers; Uncertainty; Voltage measurement; Direct comparison; Josephson arrays; measurement standards; quality assurance (QA); uncertainty; voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2011.2139250

Filename

5764538