000056363 001__ 56363 000056363 005__ 20200221144252.0 000056363 0247_ $$2doi$$a10.1088/1742-6596/718/4/042026 000056363 0248_ $$2sideral$$a95708 000056363 037__ $$aART-2016-95708 000056363 041__ $$aeng 000056363 100__ $$0(orcid)0000-0001-6327-9369$$aIguaz, F J$$uUniversidad de Zaragoza 000056363 245__ $$aTREX-DM: a low background Micromegas-based TPC for low-mass WIMP detection 000056363 260__ $$c2016 000056363 5060_ $$aAccess copy available to the general public$$fUnrestricted 000056363 5203_ $$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 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. 000056363 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/FPA2013-41085-P$$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058$$9info:eu-repo/grantAgreement/EC/FP7/ 240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX 000056363 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000056363 592__ $$a0.24$$b2016 000056363 593__ $$aPhysics and Astronomy (miscellaneous)$$c2016$$dQ3 000056363 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000056363 700__ $$0(orcid)0000-0003-0800-1588$$aGarza, J G$$uUniversidad de Zaragoza 000056363 700__ $$0(orcid)0000-0003-3629-0540$$aAznar, F 000056363 700__ $$0(orcid)0000-0003-3532-7540$$aCastel, J F$$uUniversidad de Zaragoza 000056363 700__ $$0(orcid)0000-0002-6948-5101$$aCebrián, S$$uUniversidad de Zaragoza 000056363 700__ $$0(orcid)0000-0002-8921-910X$$aDafni, T$$uUniversidad de Zaragoza 000056363 700__ $$aGarcía, J A 000056363 700__ $$0(orcid)0000-0003-1163-1687$$aIrastorza, I G$$uUniversidad de Zaragoza 000056363 700__ $$aLagraba, A 000056363 700__ $$0(orcid)0000-0002-5352-1884$$aLuzón, G$$uUniversidad de Zaragoza 000056363 700__ $$aPeiró, A 000056363 7102_ $$12004$$2X$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cProy. investigación HCA 000056363 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl. 000056363 773__ $$g718 (2016), 042026 [5 pp.]$$pJ. Phys.: Conf. Ser.$$tJournal of physics. Conference series$$x1742-6588 000056363 8564_ $$s1819232$$uhttps://zaguan.unizar.es/record/56363/files/texto_completo.pdf$$yVersión publicada 000056363 8564_ $$s89895$$uhttps://zaguan.unizar.es/record/56363/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000056363 909CO $$ooai:zaguan.unizar.es:56363$$particulos$$pdriver 000056363 951__ $$a2020-02-21-13:28:25 000056363 980__ $$aARTICLE