Development of zener calibration system using 10 V programmable Josephson voltage standard at NMIJ

Author

Maruyama, Mihoko ; Iwasa, Akio ; Yamamori, Hirotake ; Shih-Fang Chen ; Urano, Chiharu ; Kaneko, Nobu-hisa

Author_Institution

Nat. Metrol. Inst. of Japan (NMIJ), AIST, Tsukuba, Japan

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

260

Lastpage

261

Abstract

We are developing a calibration system for Zener voltage standards using a programmable Josephson voltage standard (PJVS) for the purposes of the reduction in liquid-helium consumption and also the improvement of the calibration performance. The PJVS array is composed of total 524 288 NbN-based Josephson junctions and is cooled with a 10 K compact cooler. For verifying the validity of the system, the indirect comparison between the PJVS system and our conventional JVS (CJVS) system has been carried out. As a result, the agreement within the relative expanded uncertainty of 7.8 × 10^-9 was obtained. The uncertainty in the calibration of Zener voltage standards using our PJVS system is also discussed.

Keywords

Josephson effect; calibration; measurement standards; measurement uncertainty; voltage measurement; CJVS system; NMIJ; NbN- based Josephson junction; PJVS system; Zener calibration system; Zener voltage standard; conventional JVS system; liquid-helium consumption reduction; programmable Josephson voltage standard; temperature 10 K; voltage 10 V; Arrays; Calibration; Helium; Standards; Temperature measurement; Uncertainty; Voltage measurement; Calibration; DC voltage; Josephson junction array; PJVS; Zener voltage standard; liquid helium; mechanical cooler;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898358

Filename

6898358