Comparison of 3 Absolute Gravimeters Based on Different Methods for the e-MASS Project

Author

Louchet-Chauvet, Anne ; Merlet, Sébastien ; Bodart, Quentin ; Landragin, Arnaud ; Santos, Franck Pereira Dos ; Baumann, Henri ; Agostino, Giancarlo D. ; Origlia, C.

Author_Institution

Lab. Nat. de Metrol. et d´´Essais-Syst. de Reference Temps-Espace (LNE-SYRTE), UPMC, Paris, France

Volume

60

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

2527

Lastpage

2532

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.

Keywords

geophysical techniques; gravimeters; light interferometry; absolute gravimeter; atomic interferometry; e-MASS project; g measurement; gravitational acceleration; optical interferometry; Atmospheric measurements; Atomic measurements; Gravity; Gravity measurement; Measurement by laser beam; Optical interferometry; Sea measurements; Absolute gravimetry; geophysical measurements; gravity measurement; standards; watt balance;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2010.2099951

Filename

5701669