89765 20210902121707.0 doi 10.1007/JHEP04(2020)034 sideral 117871 ART-2020-117871 eng Fernandes, A.F.M. Low-diffusion Xe-He gas mixtures for rare-event detection: electroluminescence yield 2020 Access copy available to the general public Unrestricted High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and double beta decay detection. The discrimination of the rare event through the topological signature of primary ionisation trails is a major asset for this type of TPC when compared to single liquid or double-phase TPCs, limited mainly by the high electron diffusion in pure xenon. Helium admixtures with xenon can be an attractive solution to reduce the electron diffu- sion significantly, improving the discrimination efficiency of these optical TPCs. We have measured the electroluminescence (EL) yield of Xe–He mixtures, in the range of 0 to 30% He and demonstrated the small impact on the EL yield of the addition of helium to pure xenon. For a typical reduced electric field of 2.5 kV/cm/bar in the EL region, the EL yield is lowered by ~ 2%, 3%, 6% and 10% for 10%, 15%, 20% and 30% of helium concentration, respectively. This decrease is less than what has been obtained from the most recent simulation framework in the literature. The impact of the addition of helium on EL statistical fluctuations is negligible, within the experimental uncertainties. The present results are an important benchmark for the simulation tools to be applied to future optical TPCs based on Xe-He mixtures. info:eu-repo/grantAgreement/EC/FP7/339787/EU/Towards the NEXT generation of bb0nu experimets/NEXT 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/EC/H2020/740055/EU/Molecule for low diffusion TPCs for rare event searches/MELODIC This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 740055-MELODIC info:eu-repo/grantAgreement/ES/MICINN/RTI2018-095979 info:eu-repo/grantAgreement/ES/MINECO/FIS2014-53371-C04 info:eu-repo/grantAgreement/ES/MINECO/MDM-2016-0692 info:eu-repo/grantAgreement/ES/MINECO/SEV-2014-0398 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 5.81 2020 PHYSICS, PARTICLES & FIELDS 5 / 29 = 0.172 2020 Q1 T1 0.998 2020 Nuclear and High Energy Physics 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Henriques, C.A.O. Mano, R.D.P. González-Díaz, D. Azevedo, C.D.R. Silva, P.A.O.C. Gómez-Cadenas, J.J. Freitas, E.D.C. Fernandes, L.M.P. Monteiro, C.M.B. Adams, C. Álvarez, V. Arazi, L. Arnquist, I.J. Bailey, K. Ballester, F. Benlloch-Rodríguez, J.M. Borges, F.I.G.M. Byrnes, N. Cárcel, S. Carrión, J.V. Cebrián, S. Universidad de Zaragoza (orcid)0000-0002-6948-5101 Church, E. Conde, C.A.N. Contreras, T. Díaz, G. Díaz, J. Diesburg, M. Escada, J. Esteve, R. Felkai, R. Ferrario, P. Ferreira, A.L. Generowicz, J. Ghosh, S. Goldschmidt, A. Guenette, R. Gutiérrez, R.M. Haefner, J. Hafidi, K. Hauptman, J. Hernando Morata, J.A. Herrero, P. Herrero, V. Ifergan, Y. Johnston, S. Jones, B.J.P. Kekic, M. Labarga, L. Laing, A. Lebrun, P. López-March, N. Losada, M. Martín-Albo, J. Martínez, A. Martínez-Lema, G. McDonald, A.D. Monrabal, F. Mora, F.J. Muñoz Vidal, J. Novella, P. Nygren, D.R. Palmeiro, B. Para, A. Pérez, J. Psihas, F. Querol, M. Renner, J. Repond, J. Riordan, S. Ripoll, L. Rodríguez García, Y. Rodríguez, J. Rogers, L. Romeo, B. Romo-Luque, C. Santos, F.P. dos Santos, J.M.F. Simón, A. Sofka, C. Sorel, M. Stiegler, T. Toledo, J.F. Torrent, J. Usón, A. Veloso, J.F.C.A. Webb, R. Weiss-Babai, R. White, J.T. Woodruff, K. Yahlali, N. The NEXT collaboration 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 2020, 4 (2020), 34 1-15 J. high energy phys. Journal of High Energy Physics 1126-6708 966261 http://zaguan.unizar.es/record/89765/files/texto_completo.pdf Versión publicada 42505 http://zaguan.unizar.es/record/89765/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:89765 articulos driver 2021-09-02-09:17:40 ARTICLE