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Modelling the behaviour of microbulk Micromegas in Xenon/trimethylamine gas
/ Ruiz-Choliz, E. (Zaragoza U. ; LSC, Canfranc) ; González-Díaz, D. (Zaragoza U. ; LSC, Canfranc ; CERN) ; Diago, A. (Zaragoza U. ; LSC, Canfranc) ; Castel, J. (Zaragoza U. ; LSC, Canfranc) ; Dafni, T. (Zaragoza U. ; LSC, Canfranc) ; Herrera, D.C. (Zaragoza U. ; LSC, Canfranc) ; Iguaz, F.J. (Zaragoza U. ; LSC, Canfranc) ; Irastorza, I.G. (Zaragoza U. ; LSC, Canfranc) ; Luzón, G. (Zaragoza U. ; LSC, Canfranc) ; Mirallas, H. (Zaragoza U. ; LSC, Canfranc) et al.
We model the response of a state of the art micro-hole single-stage charge amplication device (`microbulk' Micromegas) in a gaseous atmosphere consisting of Xenon/trimethylamine at various concentrations and pressures. The amplifying structure, made with photo-lithographic techniques similar to those followed in the fabrication of gas electron multipliers (GEMs), consisted of a 100 um-side equilateral-triangle pattern with 50 um-diameter holes placed at its vertexes. [...]
arXiv:1506.05077.-
2015-11-01 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 799 (2015) 137-146
Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint
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Design of New Resonant Haloscopes in the Search for the Dark Matter Axion: A Review of the First Steps in the RADES Collaboration
/ Díaz-Morcillo, Alejandro (Cartagena Politecnica U.) ; Barceló, José María García (Cartagena Politecnica U.) ; Guerrero, Antonio José Lozano (Cartagena Politecnica U.) ; Navarro, Pablo (Cartagena Politecnica U.) ; Gimeno, Benito (Valencia U., IFIC) ; Cuendis, Sergio Arguedas (CERN) ; Melcón, Alejandro Álvarez (Cartagena Politecnica U.) ; Cogollos, Cristian (Barcelona, IEEC) ; Calatroni, Sergio (CERN) ; Döbrich, Babette (CERN) et al.
Within the increasing interest in the dark matter axion detection through haloscopes, in which different international groups are currently involved, the RADES group was established in 2016 with the goal of developing very sensitive detection systems to be operated in dipole magnets. This review deals with the work developed by this collaboration during its first five years, from the first designs, based on the multi-cavity concept, aiming to increase the haloscope volume and, so, to improve its sensitivity, their evolution, the data acquisition design, and, finally, the first experimental run. [...]
arXiv:2111.14510.-
2021-12-23 - 24 p.
- Published in : Universe 8 (2021) 5
Fulltext: 2111.14510 - PDF; document - PDF;
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Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives
/ Azevedo, C.D.R. (Aveiro U.) ; González-Díaz, D. (CERN ; Santiago de Compostela U., IGFAE) ; Biagi, S.F. (Uludag U.) ; Oliveira, C.A.B. (LBNL, Berkeley) ; Henriques, C.A.O. (Coimbra U.) ; Escada, J. (Coimbra U.) ; Monrabal, F. (Texas U., Arlington) ; Gómez-Cadenas, J.J. (Valencia U., IFIC) ; Álvarez, V. (Valencia U., IFIC) ; Benlloch-Rodríguez, J.M. (Valencia U., IFIC) et al.
We introduce a simulation framework for the transport of high and low energy electrons in xenon-based gaseous optical time projection chambers (OTPCs). The simulation relies on elementary cross sections (electron-atom and electron-molecule) and incorporates, in order to compute the gas scintillation, the reaction/quenching rates (atom-atom and atom-molecule) of the first 41 excited states of xenon and the relevant associated excimers, together with their radiative cascade. [...]
arXiv:1705.09481; FERMILAB-PUB-17-267-CD.-
2018-01-01 - 16 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 877 (2018) 157-172
Fulltext: arXiv:1705.09481 - PDF; fermilab-pub-17-267-cd - PDF; External link: Fermilab Accepted Manuscript
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Sensitivity of NEXT-100 to neutrinoless double beta decay
/ NEXT Collaboration
NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta decay of Xe-136. The detector possesses two features of great value in neutrinoless double beta decay searches: very good energy resolution (better than 1% FWHM at the Q value of Xe-136) and track reconstruction for the discrimination of signal and background events. [...]
arXiv:1511.09246; FERMILAB-PUB-16-669-CD-ND.-
2016-05-26 - 30 p.
- Published in : JHEP 05 (2016) 159
Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Fermilab Library Server (fulltext available)
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Scalable haloscopes for axion dark matter detection in the 30$\mu$eV range with RADES
/ Álvarez Melcón, A. (Cartagena Politecnica U.) ; Arguedas Cuendis, S. (CERN) ; Cogollos, C. (ICC, Barcelona U.) ; Díaz-Morcillo, A. (Cartagena Politecnica U.) ; Döbrich, B. (CERN) ; Gallego, J.D. (Yebes Astron. Ctr.) ; García Barceló, J.M. (Cartagena Politecnica U.) ; Gimeno, B. (Valencia U., IFIC) ; Golm, J. (Jena U.) ; Irastorza, I.G. (Zaragoza U.) et al.
RADES (Relic Axion Detector Exploratory Setup) is a project with the goal of directly searching for axion dark matter above the $30 \mu$eV scale employing custom-made microwave filters in magnetic dipole fields. Currently RADES is taking data at the LHC dipole of the CAST experiment. [...]
arXiv:2002.07639; NORDITA-2020-010.-
2020 - 28 p.
- Published in : JHEP 2007 (2020) 084
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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The 3 cavity prototypes of RADES, an axion detector using microwave filters at CAST
/ Arguedas Cuendis, Sergio (CERN) ; Álvarez Melcón, A. (Cartagena Politecnica U.) ; Cogollos, C. (ICC, Barcelona U.) ; Díaz-Morcillo, A. (Cartagena Politecnica U.) ; Döbrich, B. (CERN) ; Gallego, J.D. (Yebes Astron. Ctr.) ; Gimeno, B. (Valencia U.) ; Irastorza, I.G. (Zaragoza U.) ; Lozano-Guerrero, A.J. (Cartagena Politecnica U.) ; Malbrunot, C. (CERN) et al.
The Relic Axion Detector Experimental Setup (RADES) is an axion search project that uses a microwave filter as resonator for Dark Matter conversion. The main focus of this publication is the description of the 3 different cavity prototypes of RADES. [...]
arXiv:1903.04323.-
2020 - 7 p.
- Published in : Springer Proc. Phys. 245 (2020) 45-51
Fulltext: PDF;
In : 3rd Workshop on Microwave Cavities and Detectors for Axion Research, Livermore, CA, USA, 21 - 24 Aug 2018, pp.45-51
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Wide-band full-wave electromagnetic modal analysis of the coupling between dark-matter axions and photons in microwave resonators
/ Navarro, P. (Cartagena Politecnica U.) ; Gimeno, Benito (Valencia U., IFIC) ; Alvarez Melcon, A. (Cartagena Politecnica U.) ; Arguedas Cuendis, S. (CERN) ; Cogollos, C. (ICC, Barcelona U.) ; Diaz-Morcillo, A. (Cartagena Politecnica U.) ; Gallego, J.D. (Bonn, Max Planck Inst., Radioastron.) ; Garcia Barcelo, J.M. (Cartagena Politecnica U.) ; Golm, J. (CERN ; Jena U.) ; Irastorza, I.G. (Zaragoza U.) et al.
The electromagnetic coupling axion-photon in a microwave cavity is revisited with the Boundary Integral - Resonant Mode Expansion (BI-RME) 3D technique. Such full-wave modal technique has been applied for the rigorous analysis of the excitation of a microwave cavity with an axion field. [...]
arXiv:2107.03137.-
2022-06 - 37 p.
- Published in : Phys. Dark Univ. 36 (2022) 101001
Fulltext: Fulltext - PDF; 2107.03137 - PDF;
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Background rejection in NEXT using deep neural networks
/ NEXT Collaboration
We investigate the potential of using deep learning techniques to reject background events in searches for neutrinoless double beta decay with high pressure xenon time projection chambers capable of detailed track reconstruction. The differences in the topological signatures of background and signal events can be learned by deep neural networks via training over many thousands of events. [...]
arXiv:1609.06202; FERMILAB-PUB-16-422-CD.-
2017-01-16 - 21 p.
- Published in : JINST 12 (2017) T01004
Fulltext: 10.1088_1748-0221_12_01_T01004 - PDF; arXiv:1609.06202 - PDF; fermilab-pub-16-422-cd - PDF; IOP Open Access article: PDF; External link: Fermilab Accepted Manuscript
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