Low-diffusion Xe-He gas mixtures for rare-event detection: electroluminescence yield
Entity
UAM. Departamento de Física TeóricaPublisher
Springer; Scuola Internazionale Superiore di Studi Avanzati (SISSA)Date
2020-04-06Citation
10.1007/JHEP04(2020)034
Journal of High Energy Physics 2020.4 (2020): 34
ISSN
1126-6708 (print); 1029-8479 (online)DOI
10.1007/JHEP04(2020)034Funded by
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 Economía y Competitividad of Spain under grants FIS2014-53371-C04, RTI2018-095979, the Severo Ochoa Program SEV-2014-0398 and the María de Maetzu Program MDM-2016-0692; the GVA of Spain under grants PROMETEO/2016/120 and SEJI/2017/011; the Portuguese FCT under project PTDC/FIS-NUC/2525/2014, under project UID/FIS/04559/2013 to fund the activities of LIBPhys, and under grants PD/BD/105921/2014, SFRH/BPD/109180/2015; the U.S. Department of Energy under contracts number DEAC02-06CH11357 (Argonne National Laboratory), DE-AC02- 07CH11359 (Fermi National Accelerator Laboratory), DE-FG02-13ER42020 (Texas A& M) and DE-SC0019223 / DESC0019054 (University of Texas at Arlington); and the University of Texas at Arlington. DGD acknowledges Ramón y Cajal program (Spain) under contract number RYC-2015-18820. We also warmly acknowledge the Laboratori Nazionali del Gran Sasso (LNGS) and the Dark Side collaboration for their help with TPB coating of various parts of the NEXT-White TPC. Finally, we are grateful to the Laboratorio Subterraneo de Canfranc for hosting and supporting the NEXT experimentProject
info:eu-repo/grantAgreement/EC/FP7/339787/EU//NEXT; info:eu-repo/grantAgreement/EC/H2020/674896/EU//ELUSIVES; info:eu-repo/grantAgreement/EC/H2020/690575/EU//InvisiblesPlus; info:eu-repo/grantAgreement/EC/H2020/740055/EU//MELODIC; Gobierno de España. FIS2014-53371-CO4; Gobierno de España. RTI2018-095979; Gobierno de España. SEV-2014-0398; Gobierno de España. MDM-2016-0692Editor's Version
https://doi.org/10.1007/JHEP04(2020)034Subjects
Dark Matter and Double Beta Decay (Experiments); Particle Correlations and Fluctuations; Photon Production; Rare Decay; FísicaNote
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiereRights
© 2020 The AuthorsAbstract
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
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Google Scholar:Fernandes, A. F.M.
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Labarga Echeverría, Luis Alfonso
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NEXT collaboration
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