Investigation of systematic errors of an AC Jospehson Voltage Standard
NRC Institute for National Measurement Standards; National Research Council Canada
2012 Conference on Precision Electromagnetic Measurements (CPEM 2012), 1-6 July 2012, Washington, DC, USA
2012 Conference on Precision Electromagnetic Measurements
Josephson effect; calibration; digital-analog conversion; superconducting arrays; voltage measurement; signal synthesis
This paper presents results of experiments quantifying two systematic errors associated with the calibrations by use of an AC Josephson Voltage Standard: the change in the voltage leads error with the change in the level of probe immersion in the liquid helium, and the effect of the internal inductance of a Josephson array. The measurements were performed at frequencies 100 kHz and above, however, they can be used in evaluating an error budget at lower frequencies.
Full text available on July 30, 2013