@article{fdi:010074031, title = {{E}xploring gravity with the {MIGA} large scale atom interferometer}, author = {{C}anuel, {B}. and {B}ertoldi, {A}. and {A}mand, {L}. and di {B}orgo, {E}. {P}. and {C}hantrait, {T}. and {D}anquigny, {C}. and {A}lvarez, {M}. {D}. and {F}ang, {B}. and {F}reise, {A}. and {G}eiger, {R}. and {G}illot, {J}. and {H}enry, {S}. and {H}inderer, {J}. and {H}olleville, {D}. and {J}unca, {J}. and {L}efevre, {G}. and {M}erzougui, {M}. and {M}ielec, {N}. and {M}onfret, {T}ony and {P}elisson, {S}. and {P}revedelli, {M}. and {R}eynaud, {S}. and {R}iou, {I}. and {R}ogister, {Y}. and {R}osat, {S}. and {C}ormier, {E}. and {L}andragin, {A}. and {C}haibi, {W}. and {G}affet, {S}. and {B}ouyer, {P}.}, editor = {}, language = {{ENG}}, abstract = {{W}e present the {MIGA} experiment, an underground long baseline atom interferometer to study gravity at large scale. {T}he hybrid atom-laser antenna will use several atom interferometers simultaneously interrogated by the resonant mode of an optical cavity. {T}he instrument will be a demonstrator for gravitational wave detection in a frequency band (100 m{H}z-1 {H}z) not explored by classical ground and space-based observatories, and interesting for potential astrophysical sources. {I}n the initial instrument configuration, standard atom interferometry techniques will be adopted, which will bring to a peak strain sensitivity of 2 center dot 10(-13)/root {H}z at 2 {H}z. {T}his demonstrator will enable to study the techniques to push further the sensitivity for the future development of gravitational wave detectors based on large scale atom interferometers. {T}he experiment will be realized at the underground facility of the {L}aboratoire {S}outerrain a {B}as {B}ruit ({LSBB}) in {R}ustrel-{F}rance, an exceptional site located away from major anthropogenic disturbances and showing very low background noise. {I}n the following, we present the measurement principle of an in-cavity atom interferometer, derive the method for {G}ravitational {W}ave signal extraction from the antenna and determine the expected strain sensitivity. {W}e then detail the functioning of the different systems of the antenna and describe the properties of the installation site.}, keywords = {}, booktitle = {}, journal = {{S}cientific {R}eports - {N}ature}, volume = {8}, numero = {}, pages = {art. 14064 [23 ]}, ISSN = {2045-2322}, year = {2018}, DOI = {10.1038/s41598-018-32165-z}, URL = {https://www.documentation.ird.fr/hor/fdi:010074031}, }