2015/09/07 by F.J. Iguaz, F. J. Iguaz, J. G. Garza +29
Chemistry · Computer Science · Physics and Astronomy · #Bluetooth and Wireless Communication Technologies #Dark Matter and Cosmic Phenomena #Spectroscopy and Laser Applications #hep-ex #physics.ins-det
paper · pdf · doi:10.48550/arxiv.1509.02035
Contributed to the 11th Patras Workshop on Axions, WIMPs and WISPs, Zaragoza, June 22 to 26, 2015
arxiv created 2015/09/07 · arxiv updated 2015/09/08
Dark Matter experiments are recently focusing their detection techniques in low-mass WIMPs, which requires the use of light elements and low energy threshold. In this context, we describe the TREX-DM experiment, a low background Micromegas-based Time Projection Chamber for low-mass WIMP detection. Its main goal is the operation of an active detection mass ∼0.3 kg, with an energy threshold below 0.4~keVee and fully built with previously selected radiopure materials. This work focuses on the commissioning of the actual setup situated in a laboratory on surface. A preliminary background model of the experiment is also presented, based on Geant4 simulations and two discrimination methods: a conservative muon/electron and one based on a 252Cf source. Based on this model, TREX-DM could be competitive in the search for low mass WIMPs and, in particular, it could be sensitive to the WIMP interpretation of the DAMA/LIBRA hint.