The ZnWO4 crystal scintillator has unique features that make it very promising to realize a pioneering experiment to pursue Dark Matter investigation with the directionality technique. In particular in this detector the light output and the scintillation pulse shape for heavy particles (p, α, nuclear recoils) depend on the direction of the impinging particle with respect to the crystal axes, while the response to γ/β radiation is isotropic. The anisotropy of the light output can be considered to point out the presence in the diurnal counting rate of a Dark Matter signal produced by candidate particle inducing just nuclear recoils. In addition this crystal detector has also other important characteristics for a Dark Matter experiment: high light output, high level of radiopurity. In this paper the present performances of the developed ZnWO4 crystal scintillator will be summarized together with the possible future improvements. Some reachable sensitivities – under given assumptions – in the investigation of DM candidate particles with the directionality technique will also be addressed.

Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F.A., et al. (2017). ZnWO4 anisotropic scintillator for Dark Matter investigation with the directionality technique. EPJ WEB OF CONFERENCES, 136, 05002-1-05002-6 [10.1051/epjconf/201713605002].

ZnWO4 anisotropic scintillator for Dark Matter investigation with the directionality technique

BERNABEI, RITA;Caracciolo, V;
2017

Abstract

The ZnWO4 crystal scintillator has unique features that make it very promising to realize a pioneering experiment to pursue Dark Matter investigation with the directionality technique. In particular in this detector the light output and the scintillation pulse shape for heavy particles (p, α, nuclear recoils) depend on the direction of the impinging particle with respect to the crystal axes, while the response to γ/β radiation is isotropic. The anisotropy of the light output can be considered to point out the presence in the diurnal counting rate of a Dark Matter signal produced by candidate particle inducing just nuclear recoils. In addition this crystal detector has also other important characteristics for a Dark Matter experiment: high light output, high level of radiopurity. In this paper the present performances of the developed ZnWO4 crystal scintillator will be summarized together with the possible future improvements. Some reachable sensitivities – under given assumptions – in the investigation of DM candidate particles with the directionality technique will also be addressed.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - Fisica Nucleare e Subnucleare
English
Con Impact Factor ISI
DARK MATTER; ZnWO4; directionality
http://www.epj-conferences.org/articles/epjconf/abs/2017/05/epjconf_ricap2017_05002/epjconf_ricap2017_05002.html
Bernabei, R., Belli, P., Cappella, F., Caracciolo, V., Cerulli, R., Danevich, F.A., et al. (2017). ZnWO4 anisotropic scintillator for Dark Matter investigation with the directionality technique. EPJ WEB OF CONFERENCES, 136, 05002-1-05002-6 [10.1051/epjconf/201713605002].
Bernabei, R; Belli, P; Cappella, F; Caracciolo, V; Cerulli, R; Danevich, Fa; D'Angelo, A; Di Marco, A; Incicchitti, A; Mokina, V; Poda, D; Polischuk, O; Taruggi, C; Tretyak, V
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/179344
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