| Title: |
Low-diffusion Xe-He gas mixtures for rare-event detection: electroluminescence yield |
| Authors: |
Fernandes, A.F.M.; Henriques, C.A.O.; Mano, R.D.P.; González-Díaz, Diego; Azevedo, C.D.R.; Silva, P.A.O.C.; Gómez Cadenas, Juan José; Freitas, Elisabete D.C.; Fernandes, L.M.P.; Monteiro, Cristina M.B.; Adams, C.; Álvarez Puerta, Vicente; Arazi, L.; Arnquist, I.J.; Bailey, K.; Ballester Merelo, Francisco José; Benlloch Rodríguez, J.M.; Borges, Filipa I.G.M.; Byrnes, N.; Cárcel García, Sara; Carrión, J.V.; Cebrián, Susana; Church, E.; Conde, Carlos A.N.; Contreras, T.; Díaz López, G.; Díaz Medina, José; Diesburg, M.; Escada, J.; Esteve, Raúl; Felkai, R.; Ferrario, Paola; Ferreira, Antonio Luis; Generowicz, J.; Ghosh, S.; Goldschmidt, Azriel; Guenette, R.; Gutiérrez, Rafael María; Haefner, J.; Hafidi, K.; Hauptman, John M.; Hernando Morata, J.A.; Herrero, P.; Herrero, Vicente; Ifergan, Y.; Johnston, S.; Jones, Benjamin J.P.; Kekic, M.; Labarga, Luis A.; Laing, Andrew; Lebrun, P.; López-March, N.; Losada, Marta; Martín-Albo Simón, Justo; Martínez Pérez, Alberto; Martínez Lema, Gonzalo; McDonald, Alison D.; Monrabal Capilla, Francesc; Mora, Francisco José; Muñoz Vidal, J.; Novella, P.; Nygren, David R.; Palmeiro, B.; Para, A.; Pérez, Javier Martin; Psihas, F.; Querol, M.; Renner, Joshua; Repond, J.; Riordan, S.; Ripoll Masferrer, Lluís; Rodríguez García, Y.; Rodríguez Samaniego, Javier; Rogers, L.; Romeo, B.; Romo-Luque, C.; Santos, Filomena P.; dos Santos, Joaquim M.F.; Simón Estévez, Ander; Sofka, C.; Sorel, Michel; Stiegler, T.; Toledo, J.F.; Torrent Collell, Jordi; Usón, A.; Veloso, João F.C.A.; Webb, R.C.; Weiss-Babai, R.; White, James T.; Woodruff, K.; Yahlali Haddou, Nadia |
| Source: |
Journal of High Energy Physics, 2020, art.núm.34 ; Articles publicats (D-EMCI) |
| Publisher Information: |
Springer |
| Publication Year: |
2020 |
| Collection: |
Universitat de Girona: DUGiDocs (UdG Digital Repository) |
| Subject Terms: |
Partícules (Física nuclear); Particles (Nuclear physics); Fotons; Photons; Doble desintegració beta; Double beta decay; Electroluminescence; Electroluminescència |
| Description: |
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 ; The NEXT Collaboration acknowledges support from the following agencies and institutions: the European Research Council (ERC) under the Advanced Grant 339787- NEXT; the European Union’s Framework Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Sklodowska-Curie Grant Agreements No. 674896, 690575 and 740055; the Ministerio de Econom´ıa y Competitividad of Spain under grants FIS2014- 53371-C04, RTI2018-095979, the Severo Ochoa Program SEV-2014-0398 and the Mar´ıa de Maetzu Program MDM-2016-0692; the GVA of Spain under grants PROMETEO/2016/120 and SEJI/2017/011; the Portuguese FCT ... |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
1126-6708; 1029-8479 |
| Relation: |
info:eu-repo/semantics/altIdentifier/issn/1126-6708; info:eu-repo/semantics/altIdentifier/eissn/1029-8479; https://hdl.handle.net/10256/19549 |
| Availability: |
https://hdl.handle.net/10256/19549 |
| Rights: |
Attribution 4.0 International ; http://creativecommons.org/licenses/by/4.0/ ; info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.329D3BD7 |
| Database: |
BASE |