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First Experimental Results of the Frequency Dependence of a Vacuum-Gap Capacitor between 1 kHz and 0.01 Hz

Gert Rietveld, Neil M. Zimmerman, and Helko E. van den Brom, “First Experimental Results of the Frequency Dependence of a Vacuum-Gap Capacitor between 1 kHz and 0.01 Hz”, Submitted for publication in the Proceedings of the 2012 Conference on Precision Electromagnetic Measurements, Washington, US (2012).

Abstract:
This paper describes the first results of an experiment aiming to determine the frequency dependence of a cryogenic vacuum-gap capacitor between 0.01 Hz ('DC') and 1 kHz (AC). The AC-'DC' difference of the vacuum-gap capacitor is measured as a function of temperature, and the measured change of around 23 J.1F/F between 273 K and 4 K agrees well with an extrapolation of earlier measurements on the same capacitor between 100 Hz and 1 kHz. The results also seem to support estimates that the AC-'DC' difference of this capacitor is well below 1 J.1F/F at 4 K.

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For more information contact Gert Rietveld, grietveld@vsl.nl or Helko van den Brom, hvdbrom@vsl.nl