The first comparison between two absolute atom gravimeters took place in the gravimetry laboratory at LNE Trappes from the 28^th of september to the the 2^nd of octobre 2015. This laboratory is suitable for comparisons or calibrations of instruments other than the LNE-SYRTE CAG. It was the 6^th comparison organized on the site and the 7^th comparison involving the CAG.
The inter comparison was organized in the frame of the AQG Comité de suivi RESIF (http://www.resif.fr). This atom gravimeter is developed by Muquans (http://www.muquans.com), a spin-off of SYRTE and LP2N, and based on the pioneer concept demonstrated at SYRTE in 2008 (Bodart-APL2010) during the CAG development.

Comparison from North Gravimetry site at LNE Trappes, from left to right: superconducting gravimeter iGrav005, AQG, CG5-105 and CAG (in the wood box). crédits: S. Merlet

Comparison from South Same instruments from South. In the foreground on the left is the CAG optical bench crédits: S Merlet