000056836 001__ 56836 000056836 005__ 20220705141804.0 000056836 0247_ $$2doi$$a10.1140/epjc/s10052-016-4372-6 000056836 0248_ $$2sideral$$a96405 000056836 037__ $$aART-2016-96405 000056836 041__ $$aeng 000056836 100__ $$0(orcid)0000-0001-6327-9369$$aIguaz, F.J.$$uUniversidad de Zaragoza 000056836 245__ $$aTREX-DM: a low-background Micromegas-based TPC for low-mass WIMP detection 000056836 260__ $$c2016 000056836 5060_ $$aAccess copy available to the general public$$fUnrestricted 000056836 5203_ $$aIf Dark Matter is made of Weakly Interacting Massive Particles (WIMPs) with masses below~20 GeV, the corresponding nuclear recoils in mainstream WIMP experiments are of energies too close, or below, the experimental threshold. Gas Time Projection Chambers (TPCs) can be operated with a variety of target elements, offer good tracking capabilities and, on account of the amplification in gas, very lowthresholds are achievable. Recent advances in electronics and in novel radiopure TPC readouts, especially micro-mesh gas structure (Micromegas), are improving the scalability and low-background prospects of gaseous TPCs. Here we present TREX-DM, a prototype to test the concept of a Micromegasbased TPC to search for low-mass WIMPs. The detector is designed to host an active mass of ~0.300 kg of Ar at 10 bar, or alternatively ~0.160 kg of Ne at 10 bar, with an energy threshold below 0.4 keVee, and is fully built with radiopure materials. We will describe the detector in detail, the results from the commissioning phase on surface, as well as a preliminary background model. The anticipated sensitivity of this technique may go beyond current experimental limits for WIMPs of masses of 2–8 GeV. 000056836 536__ $$9info:eu-repo/grantAgreement/ES/UZ/JIUZ-2014-CIE-02$$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 000056836 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000056836 590__ $$a5.331$$b2016 000056836 591__ $$aPHYSICS, PARTICLES & FIELDS$$b4 / 29 = 0.138$$c2016$$dQ1$$eT1 000056836 592__ $$a1.653$$b2016 000056836 593__ $$aPhysics and Astronomy (miscellaneous)$$c2016$$dQ1 000056836 593__ $$aEngineering (miscellaneous)$$c2016$$dQ1 000056836 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000056836 700__ $$0(orcid)0000-0003-0800-1588$$aGarza, J.G.$$uUniversidad de Zaragoza 000056836 700__ $$0(orcid)0000-0003-3629-0540$$aAznar, F. 000056836 700__ $$0(orcid)0000-0003-3532-7540$$aCastel, J.F.$$uUniversidad de Zaragoza 000056836 700__ $$0(orcid)0000-0002-6948-5101$$aCebrián, S.$$uUniversidad de Zaragoza 000056836 700__ $$0(orcid)0000-0002-8921-910X$$aDafni, T.$$uUniversidad de Zaragoza 000056836 700__ $$0(orcid)0000-0002-7399-7353$$aGarcía, J.A.$$uUniversidad de Zaragoza 000056836 700__ $$0(orcid)0000-0003-1163-1687$$aIrastorza, I.G.$$uUniversidad de Zaragoza 000056836 700__ $$aLagraba, A. 000056836 700__ $$0(orcid)0000-0002-5352-1884$$aLuzón, G.$$uUniversidad de Zaragoza 000056836 700__ $$aPeiró, A. 000056836 7102_ $$12004$$2X$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cProy. investigación HCA 000056836 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl. 000056836 773__ $$g76, 529 (2016), [28 pp.]$$pEur. phys. j., C$$tThe European Physical Journal C$$x1434-6044 000056836 8564_ $$s3556711$$uhttps://zaguan.unizar.es/record/56836/files/texto_completo.pdf$$yVersión publicada 000056836 8564_ $$s11276$$uhttps://zaguan.unizar.es/record/56836/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000056836 909CO $$ooai:zaguan.unizar.es:56836$$particulos$$pdriver 000056836 951__ $$a2022-07-05-14:04:29 000056836 980__ $$aARTICLE