56363 20250722154010.0 doi 10.1088/1742-6596/718/4/042026 sideral 95708 ART-2016-95708 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 2016 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 describe 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 ~0.3 kg, with an energy threshold below 0.4 keVee and fully built with previously selected radiopure materials. This work describes the commissioning of the actual setup situated in a laboratory on surface and the updates needed for a possible physics run at the Canfranc Underground Laboratory (LSC) in 2016. A preliminary background model of TREX-DM is also presented, based on a Geant4 simulation, the simulation of the detector’s response and two discrimination methods: a conservative muon/electron and one based on a neutron source. Based on this background model, TREX-DM could be competitive in the search for low-mass WIMPs. In particular it could be sensitive, e.g., to the low-mass WIMP interpretation of the DAMA/LIBRA and other hints in a conservative scenario. 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/grantAgreement/ES/MINECO/FPA2013-41085-P info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.24 2016 Physics and Astronomy (miscellaneous) 2016 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 Irastorza, I G Universidad de Zaragoza (orcid)0000-0003-1163-1687 Lagraba, A Luzón, G Universidad de Zaragoza (orcid)0000-0002-5352-1884 Peiró, 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. 718 (2016), 042026 [5 pp.] J. Phys.: Conf. Ser. Journal of Physics: Conference Series 1742-6588 1819232 http://zaguan.unizar.es/record/56363/files/texto_completo.pdf Versión publicada 89895 http://zaguan.unizar.es/record/56363/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:56363 articulos driver 2025-07-22-15:35:39 ARTICLE