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Directional detection of Dark Matter (DM) particles could be accomplished bystudying either ion or electron recoils in large arrays of parallel carbonnanotubes. For instance, a MeV mass DM particle could scatter off a latticeelectron, resulting in the transfer of sufficient energy to eject the electronfrom the nanotube surface. The electron can eventually be detected whenever anexternal electric field is added to drive it from the open ends of the array.This detection scheme would offer an anisotropic response and could be used toselect an orientation of the target with respect to the DM wind. A compactsensor, in which the cathode element is substituted with a dense array ofparallel carbon nanotubes, could serve as the basic detection unit which - ifadequately replicated - would allow to explore a significant region of light DMmass and cross-section. A similar detection scheme could be used to detect DMparticles with mass in the GeV range scattering off the surface of a CNT andejecting a carbon ion. We report about the Monte Carlo simulations of such asystem and the R&D towards a detector prototype.

Carbon nanotubes as anisotropic target for dark matter