79019 20250722154010.0 doi 10.1088/1475-7516/2018/05/040 sideral 107207 ART-2018-107207 eng Melcón, A.Á. Axion searches with microwave filters: The RADES project 2018 Access copy available to the general public Unrestricted We propose, design and construct a variant of the conventional axion haloscope concept that could be competitive in the search for dark matter axions of masses in the decade 10-100 µeV. Theses masses are located somewhat above the mass range in which existing experiments have reached sensitivity to benchmark QCD axion models. Our haloscope consists of an array of small microwave cavities connected by rectangular irises, in an arrangement commonly used in radio-frequency filters. The size of the unit cavity determines the main resonant frequency, while the possibility to connect a large number of cavities allows to reach large detection volumes. We develop the theoretical framework of the detection concept, and present design prescriptions to optimize detection capabilities. We describe the design and realization of a first small-scale prototype of this concept, called Relic Axion Detector Exploratory Setup (RADES). It consists of a copper-coated stainless steel five-cavities microwave filter with the detecting mode operating at around 8.4 GHz. This structure has been electromagnetically characterized at 2 K and 298 K, and it is now placed in ultra-high vacuum in one of the twin-bores of the 9 T CAST dipole magnet at CERN. We describe the data acquisition system developed for relic axion detection, and present preliminary results of the electromagnetic properties of the microwave filter, which show the potential of filters to reach QCD axion window sensitivity at X-band frequencies. info:eu-repo/grantAgreement/ES/FEDER-AEI/FPA-2016-76978 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/EC/H2020/674896/EU/The Elusives Enterprise: Asymmetries of the Invisible Universe/ELUSIVES This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 674896-ELUSIVES info:eu-repo/grantAgreement/EC/H2020/690575/EU/InvisiblesPlus/InvisiblesPlus This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 690575-InvisiblesPlus info:eu-repo/grantAgreement/ES/MINECO/FPA2015-65745-P info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 5.524 2018 PHYSICS, PARTICLES & FIELDS 5 / 29 = 0.172 2018 Q1 T1 ASTRONOMY & ASTROPHYSICS 13 / 69 = 0.188 2018 Q1 T1 0.913 2018 Astronomy and Astrophysics 2018 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Cuendis, S.A. Cogollos, C. Díaz-Morcillo, A. Döbrich, B. Gallego, J.D. Gimeno, B. Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Lozano-Guerrero, A.J. Malbrunot, C. Navarro, P. Garay, C.P. Redondo, J. Universidad de Zaragoza (orcid)0000-0002-1044-8197 Vafeiadis, T. Wuensch, W. 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 2018, 5 (2018), [22 pp] J. Cosmol. Astropart. Phys. Journal of Cosmology and Astroparticle Physics 1475-7516 806786 http://zaguan.unizar.es/record/79019/files/texto_completo.pdf Postprint 95984 http://zaguan.unizar.es/record/79019/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:79019 articulos driver 2025-07-22-15:35:39 ARTICLE