000032774 001__ 32774 000032774 005__ 20220705141803.0 000032774 0247_ $$2doi$$a10.1088/1742-6596/650/1/012005 000032774 0248_ $$2sideral$$a92998 000032774 037__ $$aART-2015-92998 000032774 041__ $$aeng 000032774 100__ $$0(orcid)0000-0001-6327-9369$$aIguaz, F.J.$$uUniversidad de Zaragoza 000032774 245__ $$aTREX-DM: a low background Micromegas-based TPC for low mass WIMP detection 000032774 260__ $$c2015 000032774 5060_ $$aAccess copy available to the general public$$fUnrestricted 000032774 5203_ $$aDark 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. 000032774 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058$$9info:eu-repo/grantAgreement/EC/FP7/ 240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX 000032774 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000032774 592__ $$a0.252$$b2015 000032774 593__ $$aPhysics and Astronomy (miscellaneous)$$c2015$$dQ3 000032774 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000032774 700__ $$0(orcid)0000-0003-0800-1588$$aGarza, J.G.$$uUniversidad de Zaragoza 000032774 700__ $$0(orcid)0000-0003-3629-0540$$aAznar, F. 000032774 700__ $$0(orcid)0000-0003-3532-7540$$aCastel, J.F.$$uUniversidad de Zaragoza 000032774 700__ $$0(orcid)0000-0002-6948-5101$$aCebrián, S.$$uUniversidad de Zaragoza 000032774 700__ $$0(orcid)0000-0002-8921-910X$$aDafni, T.$$uUniversidad de Zaragoza 000032774 700__ $$0(orcid)0000-0002-7399-7353$$aGarcía, J.A.$$uUniversidad de Zaragoza 000032774 700__ $$0(orcid)0000-0002-1770-8940$$aGómez, H. 000032774 700__ $$aGonzález-Diaz, D.$$uUniversidad de Zaragoza 000032774 700__ $$0(orcid)0000-0003-1163-1687$$aIrastorza, I.G.$$uUniversidad de Zaragoza 000032774 700__ $$aLagraba, A.$$uUniversidad de Zaragoza 000032774 700__ $$0(orcid)0000-0002-5352-1884$$aLuzón, G.$$uUniversidad de Zaragoza 000032774 700__ $$aPeiró, A. 000032774 700__ $$aRodríguez, A. 000032774 7102_ $$12004$$2X$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cProy. investigación HCA 000032774 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl. 000032774 773__ $$g650 (2015), 012005$$pJ. Phys.: Conf. Ser.$$tJournal of Physics: Conference Series$$x1742-6588 000032774 8564_ $$s3318432$$uhttps://zaguan.unizar.es/record/32774/files/texto_completo.pdf$$yVersión publicada 000032774 8564_ $$s94220$$uhttps://zaguan.unizar.es/record/32774/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000032774 909CO $$ooai:zaguan.unizar.es:32774$$particulos$$pdriver 000032774 951__ $$a2022-07-05-14:04:19 000032774 980__ $$aARTICLE