MIMAC: A micro-tpc matrix for dark matter directional detection

6th Symposium on Large TPCs for Low Energy Rare Event Detection

Santos, D.^1 ; Billard, J.^1,2 ; Bosson, G.^1 ; Bouly, J.L.^1 ; Bourrion, O.^1 ; Fourel, C.^1 ; Guillaudin, O.^1 ; Lamblin, J.^1 ; Muraz, J.F.^1 ; Mayet, F.^1 ; Richer, J.P.^1 ; Riffard, Q.^1 ; Ferrer, E.^3 ; Giomataris, I.^3 ; Iguaz, F.J.^3,4 ; Lebreton, L.^5 ; Maire, D.^5

LPSC, Universite Joseph Fourier Grenoble 1, Institut Polytechnique de Grenoble, France^1

Department of Physics, Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, United States^2

IRFU, CEA Saclay, 91191 Gif-sur-Yvette cedex, France^3

Laboratorio de Física Nuclear y Astropartículas, Universidad de Zaragoza, Spain^4

LMDN, IRSN Cadarache, 13115 Saint-Paul-Lez-Durance, France^5

关键词: Chamber prototype;    Dark matter halos;    Direct coupling;    Directional detections;    Directional detector;    Prototype detector;    Search strategies;    Underground laboratory;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/460/1/012007/pdf
DOI  :  10.1088/1742-6596/460/1/012007

来源: IOP

【 摘 要 】

The dark matter directional detection opens a new field in cosmology bringing the possibility to build a map of nuclear recoils that would be able to explore the galactic dark matter halo giving access to a particle characterization of such matter and the shape of the halo. The MIMAC (MIcro-tpc MAtrix of Chambers) collaboration has developed in the last years an original prototype detector based on the direct coupling of large pixelized micromegas with a devoted fast self-triggered electronics showing the feasibility of a new generation of directional detectors. The discovery potential of this search strategy is discussed and illustrated. In June 2012, the first bi-chamber prototype has been installed at Modane Underground Laboratory (LSM) and the first underground background events, the gain stability and calibration are shown.