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TitleSimulation of a quantum Hall cryogenic current comparator resistance bridge
Publication TypeConference Paper
Year of Publication2010
AuthorsLawson, T.B., Early M.D., and Jones K.
Conference NameCPEM Digest (Conference on Precision Electromagnetic Measurements)
Date Published2010
KeywordsCryogenic current comparator, Electromagnetism, Operating procedures, Quantum hall, Resistance bridges, Resistance ratio, Resonance peak, Servo performance
AbstractA servo model of MSL's CCC resistance bridge has been developed that predicts a number of resonance peaks in the response not obvious from a trivial analysis and may explain some observed instability. Such a model is useful for exploring subtle frequency-dependant effects and is valuable for optimising servo performance. Changes to some component values and operating procedures are predicted to limit the measured resistance ratio error to <0.002 ppm. © 2010 IEEE.

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