32774 20250722154010.0 doi 10.1088/1742-6596/650/1/012005 sideral 92998 ART-2015-92998 eng Iguaz, F.J. Universidad de Zaragoza (orcid)0000-0001-6327-9369 TREX-DM: a low background Micromegas-based TPC for low mass WIMP detection 2015 Access copy available to the general public Unrestricted 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 present the TREX-DM experiment, a low background Micromegas-based TPC for low-mass WIMP detection. Its main goal is the operation of an active detection mass ~0.300 kg, with an energy threshold below 0.4 keVee and fully built with previously selected radiopure materials. This article describes the actual setup, the first results of the comissioning in Ar+2%iC4H10 at 1.2 bar and the future updates for a possible physics run at the Canfranc Underground Laboratory in 2016. A first background model is also presented, based on Geant4 simulations and a muon/electron discrimination method. In a conservative scenario, TREX-DM could be sensitive to DAMA/LIBRA and other hints of positive WIMPs signals, with some space for improvement with a neutron/electron discrimination method or the use of other light gases. info:eu-repo/grantAgreement/EC/FP7/240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.252 2015 Physics and Astronomy (miscellaneous) 2015 Q3 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Garza, J.G. Universidad de Zaragoza (orcid)0000-0003-0800-1588 Aznar, F. (orcid)0000-0003-3629-0540 Castel, J.F. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Cebrián, S. Universidad de Zaragoza (orcid)0000-0002-6948-5101 Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X García, J.A. Universidad de Zaragoza (orcid)0000-0002-7399-7353 Gómez, H. (orcid)0000-0002-1770-8940 González-Diaz, D. Universidad de Zaragoza Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Lagraba, A. Universidad de Zaragoza Luzón, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Peiró, A. Rodríguez, A. 2004 X Universidad de Zaragoza Dpto. Física Teórica Proy. investigación HCA 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 650 (2015), 012005 J. Phys.: Conf. Ser. Journal of Physics: Conference Series 1742-6588 3318432 http://zaguan.unizar.es/record/32774/files/texto_completo.pdf Versión publicada 94220 http://zaguan.unizar.es/record/32774/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:32774 articulos driver 2025-07-22-15:35:39 ARTICLE