57728 20250722154010.0 doi 10.1088/1475-7516/2015/12/008 sideral 92995 ART-2015-92995 eng Aznar, F. (orcid)0000-0003-3629-0540 A Micromegas-based low-background x-ray detector coupled to a slumped-glass telescope for axion research 2015 Access copy available to the general public Unrestricted We report on the design, construction and operation of a low background x-ray detection line composed of a shielded Micromegas detector of the microbulk technology. The detector is made from radiopure materials and is placed at the focal point of a similar to 5 cm diameter, 1.5 m focal-length, cone-approximation Wolter I x-ray telescope (XRT) assembled from thermally-formed (or "slumped") glass substrates deposited with multilayer coatings. The system has been conceived as a technological pathfinder for the future International Axion Observatory (IAXO), as it combines two of the techniques (optic and detector) proposed in the conceptual design of the project. It is innovative for two reasons: it is the first time an x-ray optic has been designed and fabricated specifically for axion research, and the first time a Micromegas detector has been operated with an x-ray optic. The line has been installed at one end of the CERN Axion Solar Telescope (CAST) magnet and is currently looking for solar axions. The combination of the XRT and Micromegas detector provides the best signal-to-noise ratio obtained so far by any detection system of the CAST experiment with a background rate of 5.4 x 10(-3) counts per hour in the energy region-of-interest and signal spot area. 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/MINECO-FEDER/FPA2008-03456 info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 5.634 2015 PHYSICS, PARTICLES & FIELDS 5 / 28 = 0.179 2015 Q1 T1 ASTRONOMY & ASTROPHYSICS 9 / 62 = 0.145 2015 Q1 T1 1.271 2015 Astronomy and Astrophysics 2015 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Castel, J. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Christensen, F.E. Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X Decker, T.A. Ferrer-Ribas, E. Garcia, J.A. Universidad de Zaragoza (orcid)0000-0002-7399-7353 Giomataris, I. Garza, J.G. Universidad de Zaragoza (orcid)0000-0003-0800-1588 Hailey, C.J. Hill, R.M. Iguaz, F.J. Universidad de Zaragoza (orcid)0000-0001-6327-9369 Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Jakobsen, A.C. Luzon, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Mirallas, H. (orcid)0000-0002-9951-8680 Papaevangelou, T. Pivovaroff, M.J. Ruz, J. (orcid)0000-0002-3253-7027 Vafeiadis, T. Vogel, J.K. 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. 2015, 12 (2015), 008 J. Cosmol. Astropart. Phys. Journal of Cosmology and Astroparticle Physics 1475-7516 5470276 http://zaguan.unizar.es/record/57728/files/texto_completo.pdf Postprint 56215 http://zaguan.unizar.es/record/57728/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:57728 articulos driver 2025-07-22-15:35:40 ARTICLE