MIMAC low energy electron-recoil discrimination measured with fast neutrons

Understand

MIMAC (MIcro-TPC MAtrix of Chambers) is a directional WIMP Dark Matter detector project.

• Direct dark matter experiments need a high level of electron/recoil discrimination to search for nuclear recoils produced by WIMP-nucleus elastic scattering.
• In this paper, we proposed an original method for electron event rejection based on a multivariate analysis applied to experimental data acquired using monochromatic neutron fields.
• This analysis shows that a $10^5$ rejection power is reachable for electron/recoil discrimination.