TREX-DM: a low background Micromegas-based TPC for low mass WIMP detection

Iguaz, F.J. (Universidad de Zaragoza) ; Garza, J.G. (Universidad de Zaragoza) ; Aznar, F. ; Castel, J.F. (Universidad de Zaragoza) ; Cebrián, S. (Universidad de Zaragoza) ; Dafni, T. (Universidad de Zaragoza) ; García, J.A. (Universidad de Zaragoza) ; Gómez, H. ; González-Diaz, D. (Universidad de Zaragoza) ; Irastorza, I.G. (Universidad de Zaragoza) ; Lagraba, A. (Universidad de Zaragoza) ; Luzón, G. (Universidad de Zaragoza) ; Peiró, A. ; Rodríguez, A.
TREX-DM: a low background Micromegas-based TPC for low mass WIMP detection
Financiación FP7 / Fp7 Funds
Resumen: 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.
Idioma: Inglés
DOI: 10.1088/1742-6596/650/1/012005
Año: 2015
Publicado en: Journal of Physics: Conference Series 650 (2015), 012005
ISSN: 1742-6588

Factor impacto SCIMAGO: 0.252 - Physics and Astronomy (miscellaneous) (Q3)

Financiación: info:eu-repo/grantAgreement/EC/FP7/ 240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058
Tipo y forma: Article (Published version)
Área (Departamento): Proy. investigación HCA (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)

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