102141 20230519145408.0 doi 10.1140/epjc/s10052-020-08801-2 sideral 124374 ART-2021-124374 eng Aalseth, C.E. SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range 2021 Access copy available to the general public Unrestricted Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter searches to record (in the gas phase) the ionization signal induced by particle scattering in the liquid phase. The “standard” EL mechanism is considered to be due to noble gas excimer emission in the vacuum ultraviolet (VUV). In addition, there are two alternative mechanisms, producing light in the visible and near infrared (NIR) ranges. The first is due to bremsstrahlung of electrons scattered on neutral atoms (“neutral bremsstrahlung”, NBrS). The second, responsible for electron avalanche scintillation in the NIR at higher electric fields, is due to transitions between excited atomic states. In this work, we have for the first time demonstrated two alternative techniques of the optical readout of two-phase argon detectors, in the visible and NIR range, using a silicon photomultiplier matrix and electroluminescence due to either neutral bremsstrahlung or avalanche scintillation. The amplitude yield and position resolution were measured for these readout techniques, which allowed to assess the detection threshold for electron and nuclear recoils in two-phase argon detectors for dark matter searches. To the best of our knowledge, this is the first practical application of the NBrS effect in detection science. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.994 2021 PHYSICS, PARTICLES & FIELDS 8 / 29 = 0.276 2021 Q2 T1 1.563 2021 Physics and Astronomy (miscellaneous) 2021 Q1 Engineering (miscellaneous) 2021 Q1 8.3 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Abdelhakim, S. Agnes, P. Ajaj, R. Albuquerque, I.F.M. Alexander, T. Alici, A. Alton, A.K. Amaudruz, P. Ameli, F. Anstey, J. Antonioli, P. Arba, M. Arcelli, S. Ardito, R. Arnquist, I.J. Arpaia, P. Asner, D.M. Asunskis, A. Ave, M. Back, H.O. Barbaryan, V. Barrado Olmedo, A. Batignani, G. Bisogni, M.G. Bocci, V. Bondar, A. Bonfini, G. Bonivento, W. Borisova, E. Bottino, B. Boulay, M.G. Bunker, R. Bussino, S. Buzulutskov, A. Cadeddu, M. Cadoni, M. Caminata, A. Canci, N. Candela, A. Cantini, C. Caravati, M. Cariello, M. Carnesecchi, F. Castellani, A. Castello, P. Cavalcante, P. Cavazza, D. Cavuoti, S. Cebrian, S. Universidad de Zaragoza (orcid)0000-0002-6948-5101 Cela Ruiz, J.M. Celano, B. Cereseto, R. Chashin, S. Cheng, W. Chepurnov, A. Cicalò, C. Cifarelli, L. Citterio, M. Coccetti, F. Cocco, V. Colocci, M. Conde Vilda, E. Consiglio, L. Cossio, F. Covone, G. Crivelli, P. D’Antone, I. D’Incecco, M. Da Rocha Rolo, M.D. Dadoun, O. Daniel, M. Davini, S. De Cecco, S. 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 81, 2 (2021), 153 [17 pp.] Eur. phys. j., C The European Physical Journal C 1434-6044 1879932 http://zaguan.unizar.es/record/102141/files/texto_completo.pdf Versión publicada 2754344 http://zaguan.unizar.es/record/102141/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:102141 articulos driver 2023-05-18-13:51:34 ARTICLE