Background model of the ANAIS-112 dark matter experiment

Amaré, J. (Universidad de Zaragoza) ; Cebrián, S. (Universidad de Zaragoza) ; Cintas, D. (Universidad de Zaragoza) ; Coarasa, I. (Universidad de Zaragoza) ; García, E. (Universidad de Zaragoza) ; Martínez, M. (Universidad de Zaragoza) ; Oliván, M. A. ; Ortigoza, Y. (Universidad de Zaragoza) ; Ortiz de Solórzano, A. (Universidad de Zaragoza) ; Puimedón, J. (Universidad de Zaragoza) ; Salinas, A. ; Sarsa, M. L. (Universidad de Zaragoza) ; Villar, P. (Universidad de Zaragoza)

Resumen: The ANAIS (Annual modulation with NaI(Tl) Scintillators) experiment aims at the confirmation or refutation of the DAMA/LIBRA positive annual modulation signal in the low energy detection rate. ANAIS-112, consisting of nine 12.5 kg NaI(Tl) modules, is taking data since August, 2017 at the Canfranc Underground Laboratory (LSC) in Spain. Results from the analysis of three years of data are compatible with the absence of modulation. The background model developed for all nine ANAIS-112 detectors was established from commissioning data and non-blinded events in the first year of data taking. Now, background characterization is being improved profiting from the larger accumulated exposure available. Here, the background model is described and comparisons of model and measurements for energy spectra and counting rate time evolution for three-year exposure (considering different analysis conditions) are presented.

Idioma: Inglés

DOI: 10.1088/1742-6596/2156/1/012175

Año: 2022

Publicado en: Journal of Physics: Conference Series 2156 (2022), 012175[4 pp.]
ISSN: 1742-6588

Factor impacto SCIMAGO: 0.183 - Physics and Astronomy (miscellaneous)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E27-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-104374GB-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio2010-CPAN-CSD2007-00042
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio2010-MULTI-DARK-CSD2009-00064
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2017-83133-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Spanish Red Consolider MultiDark FPA2017-90566-REDC

Tipo y forma: Article (Published version)

Área (Departamento): Área Técnica. Lab. y Talleres (Dpto. Física Teórica)
Área (Departamento): Área Óptica (Dpto. Física Aplicada)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)