145009 20260217205601.0 doi 10.1088/1748-0221/19/05/C05029 sideral 139670 ART-2024-139670 eng Castel, J. F. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Searching for WIMPs with TREX-DM: achievements and challenges 2024 Access copy available to the general public Unrestricted The TREX-DM detector, a low background chamber with microbulk Micromegas readout, was commissioned in the Canfranc Underground Laboratory (LSC) in 2018. Since then, data taking campaigns have been carried out with argon and neon mixtures, at different pressures from 1 to 4 bar. By achieving a low energy threshold of 1 keVee and a background level of 80 counts keV-1 kg-1 day-1 in the region from 1 to 7 keVee, the experiment demonstrates its potential to search for low-mass WIMPs. Two of the most important challenges currently faced are the reduction of both, background level and energy threshold. With respect to the energy threshold, recently a new readout plane is being developed, based on the combination of Micromegas and GEM technologies, aiming to have a pre-amplification stage that would permit very low energy thresholds, close to the single-electron ionization energy. With respect to the background reduction, apart from studies to identify and minimize contamination population, a high sensitivity alpha detector is being developed in order to allow a proper material selection for the TREX-DM detector components. Both challenges, together with the optimization of the gas mixture used as target for the WIMP detection, will take TREX-DM to explore regions of WIMP's mass below 1 GeV c-2. info:eu-repo/grantAgreement/EC/H2020/788781/EU/Towards the detection of the axion with the International Axion Observatory/IAXOplus This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 788781-IAXOplus info:eu-repo/grantAgreement/ES/MINECO/PID2019-108122GB-C31 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 1.3 2024 INSTRUMENTS & INSTRUMENTATION 60 / 79 = 0.759 2024 Q4 T3 0.427 2024 Mathematical Physics 2024 Q3 Instrumentation 2024 Q3 2.3 2024 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Cebrián, S. Universidad de Zaragoza (orcid)0000-0002-6948-5101 Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X Díez Ibáñez, D. Universidad de Zaragoza Ezquerro, A. Universidad de Zaragoza (orcid)0009-0001-8374-6128 Galán, J. Universidad de Zaragoza (orcid)0000-0001-7529-9834 García, J. A. Universidad de Zaragoza (orcid)0000-0002-7399-7353 García Irastorza, Igor Universidad de Zaragoza (orcid)0000-0003-1163-1687 Jiménez, M. Universidad de Zaragoza (orcid)0009-0005-7060-5341 Luzón, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Margalejo, C. Universidad de Zaragoza (orcid)0000-0001-6213-5590 Mira, Ángel de Universidad de Zaragoza Mirallas, H. Universidad de Zaragoza (orcid)0000-0002-9951-8680 Obis, L. Universidad de Zaragoza (orcid)0000-0002-7990-2060 Ortiz de Solórzano, A. Universidad de Zaragoza (orcid)0000-0001-8278-6032 Pérez, O. Universidad de Zaragoza Ruz, J. Universidad de Zaragoza (orcid)0000-0002-3253-7027 Vogel, J. Universidad de Zaragoza (orcid)0000-0002-5850-5517 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. 19, 05 (2024), C05029 [9 p.] Journal of Instrumentation Journal of Instrumentation 1748-0221 976013 http://zaguan.unizar.es/record/145009/files/texto_completo.pdf Postprint 1556546 http://zaguan.unizar.es/record/145009/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:145009 articulos driver 2026-02-17-20:44:43 ARTICLE