Evaluation of the improved 10 mA and 10 V reference and transfer standard for the high DC current test and calibration infrastructure at CERN
Autor(in); Institution
Beev, Nikolai; European Organization for Nuclear Research (CERN), Accelerator Systems Department, High Precision Measurements Section, Electrical Power Converters Group, Geneva, SWITZERLAND; Slovak University of Technology, Faculty of Electrical Engineering and Information Technology, Bratislava, SLOVAKIA
Pickering, John R.; Metron Designs, Norwich, UK
Cerqueira Bastos, Miguel; European Organization for Nuclear Research (CERN), Accelerator Systems Department, High Precision Measurements Section, Electrical Power Converters Group, Geneva, SWITZERLAND
Hudson, Gregory; European Organization for Nuclear Research (CERN), Accelerator Systems Department, High Precision Measurements Section, Electrical Power Converters Group, Geneva, SWITZERLAND
Valuch, Daniel; European Organization for Nuclear Research (CERN), Accelerator Systems Department, High Precision Measurements Section, Electrical Power Converters Group, Geneva, SWITZERLAND; Slovak University of Technology, Faculty of Electrical Engineering and Information Technology, Bratislava, SLOVAKIA
Current standard ; High-Luminosity Large Hadron Collider ; low noise ; metrology ; programmable Josephson voltage standard (PJVS) ; voltage standard
Zusammenfassung
An improved variant of the 10 mA and 10 V DC reference and transfer standard developed for use at CERN is presented. The device achieves very low noise levels at sub-Hz frequencies, which enhances the capability for performance testing of direct-current current transformers (DCCTs) for the High-Luminosity Large Hadron Collider (HL-LHC) project, where good short- and mid-term stability is essential. To characterize the standard, the 10 V and 10 mA outputs of a single unit were tested simultaneously against two Programmable Josephson Voltage Standards (PJVSs) at PTB-Braunschweig. The measurements show negligible low-frequency noise contribution from the internal voltage-to-current conversion, while demonstrating Allan deviation better than 0.01 μ A/A on a time scale up to one day, reaching down to a few nA/A for shorter measurement times. The operation of multiple paralleled units is also presented as a viable way to further decrease both current and voltage noise.
Kostenfreier Zugang
Open Access Hybrid
Rechteinformation
CC BY 4.0 ; Creative Commons Attribution 4.0 License
Themenbereich der Metrologie
Elektrizität und Magnetismus
Zitierung
Beev, N., Pickering, J. R., Cerqueira Bastos, M., Hudson, G., Valuch, D., Palafox Gamir, L., & Behr, R. (2026). Evaluation of the improved 10 mA and 10 V reference and transfer standard for the high DC current test and calibration infrastructure at CERN. IEEE Transactions on Instrumentation and Measurement, 75, 1–9. https://doi.org/10.1109/TIM.2026.3682838
