000032210 001__ 32210
000032210 005__ 20220617151024.0
000032210 0247_ $$2doi$$a10.1140/EPJC/S10052-014-3150-6
000032210 0248_ $$2sideral$$a89145
000032210 037__ $$aART-2014-89145
000032210 041__ $$aeng
000032210 100__ $$0(orcid)0000-0003-1190-7233$$aCuesta, C.
000032210 245__ $$aBulk NaI(Tl) scintillation low energy events selection with the ANAIS-0 module
000032210 260__ $$c2014
000032210 5060_ $$aAccess copy available to the general public$$fUnrestricted
000032210 5203_ $$aDark matter particles scattering off target nuclei are expected to deposit very small energies in form of nuclear recoils (below 100Â keV). Because of the low scintillation efficiency for nuclear recoils as compared to electron recoils, in most of the scintillating targets considered in the search for dark matter, the region below 10Â keVee (electron equivalent energy) concentrates most of the expected dark matter signal. For this reason, very low energy threshold (at or below 2Â keVee) and very low background are required to be competitive in the search for dark matter with such detection technique. This is the case of Annual modulation with NaI Scintillators (ANAIS), which is an experiment to be carried out at the Canfranc Underground Laboratory. A good knowledge of the detector response function for real scintillation events in the active volume, a good characterization of other anomalous or noise event populations contributing in that energy range, and the development of convenient filtering procedures for the latter are mandatory in order to achieve the required low background at such a low energy. In this work we present the characteristics of different types of events observed in large size NaI(Tl) detectors, and the event-type identification techniques developed. Such techniques allow distinguishing among events associated with bulk NaI scintillation, and events related to muon interactions in the detectors or shielding, photomultiplier origin events, and analysis event fakes. We describe the specific protocols developed to build bulk scintillation events spectra from the raw data and we apply them to data obtained with one of the ANAIS prototypes, ANAIS-0. Nuclear recoil type events were also explored using data from a neutron calibration; however pulse shape cuts were found not to be effective to discriminate them from electron recoil events. The effect of the filtering procedures developed in this nuclear recoils population has been analyzed in order to properly correct cut efficiencies in dark matter analysis.
000032210 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-23749$$9info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio2010-MULTI-DARK-CSD2009-00064$$9info:eu-repo/grantAgreement/ES/MICINN/CPAN-CSD2007-00042
000032210 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000032210 590__ $$a5.084$$b2014
000032210 591__ $$aPHYSICS, PARTICLES & FIELDS$$b5 / 27 = 0.185$$c2014$$dQ1$$eT1
000032210 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000032210 700__ $$0(orcid)0000-0002-7158-9794$$aAmaré, J.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0002-6948-5101$$aCebrián, S.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0002-9827-2332$$aGarcía, E.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0002-4643-2138$$aGinestra, C.
000032210 700__ $$0(orcid)0000-0002-9043-4691$$aMartínez, M.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0001-7025-061X$$aOliván, M. A.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0002-2793-7544$$aOrtigoza, Y.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0001-8278-6032$$ade Solórzano, A. Ortiz$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0002-5457-3694$$aPobes, C.
000032210 700__ $$0(orcid)0000-0001-8732-8196$$aPuimedón, J.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0002-7552-1228$$aSarsa, M. L.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0003-0228-7589$$aVillar, J. A.$$uUniversidad de Zaragoza
000032210 700__ $$0(orcid)0000-0002-6519-4315$$aVillar, P.
000032210 7102_ $$12004$$2X$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cProy. investigación HCA
000032210 7102_ $$12002$$2647$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Óptica
000032210 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica
000032210 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl.
000032210 773__ $$g74, 11 (2014)$$pEur. phys. j., C$$tThe European Physical Journal C$$x1434-6044
000032210 8564_ $$s2868466$$uhttps://zaguan.unizar.es/record/32210/files/texto_completo.pdf$$yVersión publicada
000032210 8564_ $$s109325$$uhttps://zaguan.unizar.es/record/32210/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000032210 909CO $$ooai:zaguan.unizar.es:32210$$particulos$$pdriver
000032210 951__ $$a2022-06-17-15:00:49
000032210 980__ $$aARTICLE