doi:10.1088/1742-6596/1468/1/012063engCastel, J.Cebrián, S.Dafni, T.Galán, J.Irastorza, I.G.Luzón, G.Margalejo, C.Mirallas, H.Ortiz De Solórzano, A.Peiró, A.Ruiz-Chóliz, E.The TREX-DM experiment at the Canfranc Underground LaboratoryART-2020-117881TREX-DM (TPC Rare Event eXperiment for Dark Matter) is intended to look for low mass WIMPs in the Canfranc Underground Laboratory (LSC) in Spain, using light elements (Ne, Ar) as target in a high pressure TPC equipped with Micromegas readouts. Here, a description of the detector, the first results from commissioning data and the expected sensitivity from the developed background model are briefly presented.2020http://zaguan.unizar.es/record/8977210.1088/1742-6596/1468/1/012063http://zaguan.unizar.es/record/89772oai:zaguan.unizar.es:89772info: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 1468 (2020), 012063 1-3byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess