Year: 2011
Type: article
Abstract: We report on the comparison between three absolute gravimeters that took place in April 2010 at the 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 and their similarities. We compare their measurements of the gravitational acceleration in four points of the same pillar, in the perspective of absolute determination of$g$for a watt balance experiment. The three instruments performed repeatable$g$measurements but do not agree at the level aimed for. This work calls for additional studies on systematic effects.
Institutions: Centre National de la Recherche Scientifique, Observatoire de Paris, Laboratoire National de Métrologie et d'Essais, Systèmes de Référence Temps-Espace, Laboratoire Temps Espace, Université Pierre-et-Marie-Curie, Swiss Federal Institute of Metrology, Istituto Nazionale di Ricerca Metrologica
Language: English
Subfield: Statistics, Probability and Uncertainty
Field: Decision Sciences
Domain: Social Sciences
Open Access status: green
Award: G7772144070
OpenAlex ID: W2104877049