Underground operation at best sensitivity of the mobile LNE-SYRTE Cold Atom Gravimeter

Tristan Farah (1) , Christine Guerlin (1, 2) , Arnaud Landragin (1) , Philippe Bouyer (3) , Stéphane Gaffet (4, 5) , Franck Pereira dos Santos (1) , Sébastien Merlet (1)

1 LNE - SYRTE - Laboratoire national de métrologie et d'essais - Systèmes de Référence Temps-Espace
2 LKB (Lhomond) - Laboratoire Kastler Brossel
3 lp2n-02,lp2n-11
4 GEOAZUR 6526 - Géoazur
5 LSBB - Laboratoire Souterrain à Bas Bruit

Low noise underground environments offer conditions allowing to assess ultimate performance of high sensitivity sensors such as accelerometers, gyrometers, seismometers... Such facilities are for instance ideal for observing the tiny signals of interest for geophysical studies. Laboratoire Souterrain à Bas Bruit (LSBB) in which we have installed our cold atom gravimeter, provides such an environment. We report here the best short term sensitivity ever obtained without any ground vibration isolation system with such an instrument: $10^{-8}$m.s$^{-2}$ in 100 s measurement time.

Mots clés: Epos-France

Mots clés: Epos-France

Domaines: Physique Atomique [physics.atom-ph]

Tristan Farah, Christine Guerlin, Arnaud Landragin, Philippe Bouyer, Stéphane Gaffet, et al.. Underground operation at best sensitivity of the mobile LNE-SYRTE Cold Atom Gravimeter. 2014. ⟨hal-00980882⟩