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ANAIS-0: Feasibility study for a 250 kg Nal(Tl) dark matter search experiment at the Canfranc Undreground Laboratory

Authors: Cuesta Soria, Clara; Sarsa Sarsa, María Luisa;

ANAIS-0: Feasibility study for a 250 kg Nal(Tl) dark matter search experiment at the Canfranc Undreground Laboratory

Abstract

Este trabajo ha consistido en un estudio de viabilidad del experimento ANAIS (Annual modulation with NaI(Tl) Scintillators) cuyo objetivo es la detección directa de materia oscura con 250 kg de NaI(Tl) en el Laboratorio Subterráneo de Canfranc (LSC). El experimento ANAIS tratará de corroborar la señal positiva obtenida por el experimento DAMA-LIBRA utilizando el mismo material blanco y técnica de detección. La mayor parte de este estudio se ha llevado a cabo con el módulo ANAIS-0, fabricado con un cristal de 9.6 kg de NaI(Tl) y encapsulado en la Universidad de Zaragoza, que ha operado en diferentes configuraciones experimentales en el LSC. La versatilidad de este prototipo ha posibilitado el estudio del sistema de recogida de luz, ha proporcionado datos en diferentes condiciones experimentales que han permitido desarrollar un modelo del fondo radiactivo muy satisfactorio y se han diseñado protocolos de análisis de datos para el filtrado de poblaciones anómalas de eventos, no atribuibles al centelleo en el cristal de NaI. En la última etapa de este trabajo, dos cristales ultrapuros de NaI(Tl) fabricados con polvo especialmente seleccionado por su bajo contenido en potasio, fueron instalados en el LSC (ANAIS-25) y están tomando datos en la actualidad. De forma preliminar, los distintos protocolos de análisis de datos desarrollados y optimizados con ANAIS-0 se han aplicado a los datos de ANAIS-25 para obtener resultados preliminares muy favorables sobre la calidad óptica y de radiopureza de los cristales.

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Keywords

física de partículas, física nuclear experimental de bajas energías, anais, detectores de partículas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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