doi:10.1088/1742-6596/1342/1/012091engAznar, F.Castel, J.Cebrián, S.Coarasa, I.Dafni, T.Galán, J.Irastorza, I.G.Luzón, G.Mirallas, H.Ortiz De Solórzano, A.Peiró, A.Ruiz-Chóliz, E.Status of the TREX-DM experiment at the Canfranc Underground LaboratoryART-2020-116033The TREX-DM experiment is conceived to look for low mass WIMPs by means of a gas time projection chamber equipped with novel micromegas readout planes at the Canfranc Underground Laboratory. The detector can hold 20 l of pressurized gas up to 10 bar, which corresponds to 0.30 kg of Ar, or alternatively, 0.16 kg of Ne. The micromegas will be read with a self-triggered acquisition, allowing for effective thresholds below 0.4 keV (electron equivalent). The preliminary background model, following a complete material screening program, points to levels of the order of 1-10 counts keV-1 kg-1 d-1 in the region of interest, making TREX-DM competitive. The status of the commissioning, description of the background model and the corresponding WIMP sensitivity will be presented here.2020http://zaguan.unizar.es/record/8773410.1088/1742-6596/1342/1/012091http://zaguan.unizar.es/record/87734oai:zaguan.unizar.es:87734info:eu-repo/grantAgreement/EC/FP7/240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREXinfo:eu-repo/grantAgreement/ES/MINECO/FPA2013-41085-Pinfo:eu-repo/grantAgreement/ES/MINECO/FPA2016-76978-C3-1-PJournal of Physics: Conference Series 1342, Conference 1 (2020), 012091 1-5byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess