133053 20250722154011.0 doi 10.1051/eas/1253019 sideral 115996 ART-2012-115996 eng Galán, J. Low X-ray background measurements at the Underground Canfranc Laboratory 2012 Micromegas detectors, thanks to the good spatial and temporal discrimination capabilities, are good candidates for rare event search experiments. Recent X-ray background levels achieved by these detectors in the CAST experiment have motivated further studies in the nature of the background levels measured. In particular, different shielding configurations have been tested at the Canfranc Underground Laboratory, using a microbulk type detector which was previously running at the CAST experiment. The first results underground show that this technology, which is made of low radiative materials, is able to reach background levels up to 2x10^-7 keV^-1 s^-1 cm^-2 with a proper shielding. Moreover, the experimental background measurements are complemented with Geant4 simulations which allow to understand the origin of the background, and to optimize future shielding set-ups. info:eu-repo/grantAgreement/EC/FP7/240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX info:eu-repo/grantAgreement/ES/MICINN/CPAN-CSD2007-00042 info:eu-repo/grantAgreement/ES/MICINN/FPA2008-03456 info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Aune, S. Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X Fanourakis, G. Ferrer-Ribas, E. García, J.A. Gardikiotis, A. Geralis, T. Giomataris, I. Gómez, H. Garza, J.G. Herrera, D.C. Iguaz, F.J. Universidad de Zaragoza (orcid)0000-0001-6327-9369 Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Luzón, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Papaevangelou, T. Rodríguez, A. Ruz, J. (orcid)0000-0002-3253-7027 Seguí, L. Tomás, A. Vafeiadis, T. Yildiz, S.C. 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 53 (2012), 155-163 EAS publ. ser. EAS publications series 1633-4760 3956113 http://zaguan.unizar.es/record/133053/files/texto_completo.pdf Versión publicada 1354534 http://zaguan.unizar.es/record/133053/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:133053 articulos driver 2025-07-22-15:35:40 ARTICLE