Progress of the BIPM Pilot Studies on Differential Measurements of an ac Source with a Programmable Josephson Voltage Standard

Published

August 30, 2024

Author(s)

Stephane Solve, Mun-Seog Kim, Ralf Behr, Luis Palafox, Ilya Budovsky, Alain Rufenacht

Abstract

BIPM performed two pilot studies in 2023 to support the uncertainty budget for the programmable Josephson voltage standard (PJVS). The studies involved differential sampling with an ac source, as proposed in the new BIPM on-site comparison protocol. Sinewave signals of 1 V rms at different frequencies (62.5 Hz, 125 Hz, 250 Hz, 625 Hz, 1250 Hz) were investigated with PTB and KRISS. The results exhibited excellent repeatability and reproducibility when comparing measurements with two identical PJVS systems based on the KRISS voltage standard. Conversely, comparing two completely different PJVS systems with PTB systems led to divergent results. The suspected cause of the discrepancy is likely the presence of larger leakage-current-induced errors on the BIPM PJVS setup. Further pilot studies will be performed in 2024 to resolve this problem.

Conference Dates

July 8-12, 2024

Conference Location

Denver/Aurora, CO, US

Conference Title

Conference on Precision Electromagnetic Measurements (CPEM)

Pub Type

Conferences

Download Paper

https://doi.org/10.1109/CPEM61406.2024.10646091

Local Download

Keywords

Josephson junctions, Metrology, Sampling methods, Standards, Superconducting integrated circuits, Voltage measurement.

Citation

Solve, S. , Kim, M. , Behr, R. , Palafox, L. , Budovsky, I. and Rufenacht, A. (2024), Progress of the BIPM Pilot Studies on Differential Measurements of an ac Source with a Programmable Josephson Voltage Standard, Conference on Precision Electromagnetic Measurements (CPEM), Denver/Aurora, CO, US, [online], https://doi.org/10.1109/CPEM61406.2024.10646091, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957523 (Accessed January 4, 2025)