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Direct comparison of the NRC hysteretic and the NRC watt balance Programmable Josephson Voltage Systems

Direct comparison of the NRC hysteretic and the NRC watt balance Programmable Josephson Voltage Systems,10.1109/CPEM.2010.5543333,B. M. Wood,I. A. Rob

Direct comparison of the NRC hysteretic and the NRC watt balance Programmable Josephson Voltage Systems   (Citations: 1)
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At the National Research Council in Ottawa, the conventional Hysteretic Josephson Array Voltage System (HJVS) and the Programmable Josephson Array Voltage System (PJVS) associated with the watt balance experiment have been directly compared. This direct comparison of Josephson array systems uses an improved automated biasing technique for the hysteretic array. The comparison is being performed with different nanovoltmeters including the unique detector associated with the watt balance experiment. Noise, stability and linearity of the detectors are examined. Preliminary results indicate that the two Josephson systems, under optimized conditions, agree within (0.09 Ñ 0.54) nV at the nominal level of 1 V.
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    • ...Members of the Electrical Standards Group at INMS have commenced work with key parts of the experiment: the gravity profile and gradients in the laboratory have been determined in collaboration with colleagues from the Geodetic Survey Division of Natural Resources Canada (NRCan); and the binary Josephson voltage system has been reassembled and compared at the highest precision with the NRC Josephson volt standard [2]...
    • ...These measurements are reported in a separate paper at this conference [2]...

    A. D. Ingliset al. The measurement of gravitational acceleration for the NRC watt balance

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