Exploring gravity with the MIGA large scale atom interferometer
Abstract
We present an underground long baseline atom interferometer to study gravity at large scale. The hybrid atom-laser antenna will use several atom interferometers simultaneously interrogated by the resonant mode of an optical cavity. The instrument will be a demonstrator for gravitational wave detection in a frequency band (100 mHz - 1 Hz) not explored by classical ground and space-based observatories, and interesting for potential astrophysical sources. In the initial instrument configuration, standard atom interferometry techniques will be adopted, which will bring to a peak strain sensitivity of 2 at 2 Hz. The experiment will be realized at the underground facility of the Laboratoire Souterrain \`a Bas Bruit (LSBB) in Rustrel--France, an exceptional site located away from major anthropogenic disturbances and showing very low background noise. In the following, we present the measurement principle of an in-cavity atom interferometer, derive signal extraction for Gravitational Wave measurement from the antenna and determine the expected strain sensitivity. We then detail the functioning of the different systems of the antenna and describe the properties of the installation site.
Cite
@article{arxiv.1703.02490,
title = {Exploring gravity with the MIGA large scale atom interferometer},
author = {B. Canuel and A. Bertoldi and L. Amand and E. Borgo di Pozzo and B. Fang and R. Geiger and J. Gillot and S. Henry and J. Hinderer and D. Holleville and G. Lefèvre and M. Merzougui and N. Mielec and T. Monfret and S. Pelisson and M. Prevedelli and S. Reynaud and I. Riou and Y. Rogister and S. Rosat and E. Cormier and A. Landragin and W. Chaibi and S. Gaffet and P. Bouyer},
journal= {arXiv preprint arXiv:1703.02490},
year = {2019}
}