Comparison of 3 absolute gravimeters based on different methods for the e-MASS project

Abstract

We report on the comparison between three absolute gravimeters that took place in April 2010 at Laboratoire National de Métrologie et d'Essais. The three instruments (FG5#209 from METAS, Switzerland, IMGC-02 from INRIM, Italy, and CAG from LNE-SYRTE, France) rely on different methods: optical and atomic interferometry. We discuss their differences as well as their similarities. We compare their measurements of the gravitational acceleration in 4 points of the same pillar, in the perspective of an absolute determination of g for a watt balance experiment

References in corpus (4)

• Limits to the sensitivity of a low noise compact atomic gravimeter
• Comparison between two mobile absolute gravimeters: optical versus atomic interferometers
• Off-resonant Raman transitions impact in an atom interferometer
• Influence of optical aberrations in an atomic gyroscope

Cited by in corpus (5)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
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• Influence of chirping the Raman lasers in an atom gravimeter: phase shifts due to the Raman light shift and to the finite speed of light
• Relativity, Doppler shifts, and retarded times in deriving the correction for the finite speed of light: a comment on 'Second-order Doppler-shift corrections in free-fall absolute gravimeters'
• Microwave sidebands for laser cooling by direct modulation of a tapered amplifier