71209 20220617151024.0 doi 10.1016/J.NIMA.2013.09.019 sideral 86116 ART-2014-86116 eng Amaré, J. Preliminary results of ANAIS-25 2014 Access copy available to the general public Unrestricted The ANAIS (Annual Modulation with NaI(Tl) Scintillators) experiment aims at the confirmation of the DAMA/LIBRA signal using the same target and technique at the Canfranc Underground Laboratory. 250 kg of ultrapure NaI(Tl) crystals will be used as a target, divided into 20 modules, each coupled to two photomultipliers. Two NaI(Tl) crystals of 12.5 kg each, grown by Alpha Spectra from a powder having a potassium level under the limit of our analytical techniques, form the ANAIS-25 set-up. The background contributions are being carefully studied and preliminary results are presented: their natural potassium content in the bulk has been quantified, as well as the uranium and thorium radioactive chains presence in the bulk through the discrimination of the corresponding alpha events by PSA, and due to the fast commissioning, the contribution from cosmogenic activated isotopes is clearly identified and their decay observed along the first months of data taking. Following the procedures established with ANAIS-0 and previous prototypes, bulk NaI(Tl) scintillation events selection and light collection efficiency have been also studied in ANAIS-25. info:eu-repo/grantAgreement/ES/MICINN/CPAN-CSD2007-00042 info:eu-repo/grantAgreement/ES/MICINN/FPI-CSD2009-00064 info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-23749 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 1.216 2014 NUCLEAR SCIENCE & TECHNOLOGY 9 / 34 = 0.265 2014 Q2 T1 SPECTROSCOPY 29 / 44 = 0.659 2014 Q3 T2 INSTRUMENTS & INSTRUMENTATION 31 / 56 = 0.554 2014 Q3 T2 PHYSICS, PARTICLES & FIELDS 22 / 27 = 0.815 2014 Q4 T3 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Cebrián, S. Universidad de Zaragoza (orcid)0000-0002-6948-5101 Cuesta, C. García, E. Ginestra, C. (orcid)0000-0002-4643-2138 Martínez, M. Universidad de Zaragoza (orcid)0000-0002-9043-4691 Oliván, M.A. Ortigoza, Y. Ortiz de Solórzano, A. Universidad de Zaragoza (orcid)0000-0001-8278-6032 Pobes, C. Puimedón, J. Universidad de Zaragoza (orcid)0000-0001-8732-8196 Sarsa, M.L. Villar, J.A. Villar, P. 2004 X Universidad de Zaragoza Dpto. Física Teórica Área Técnica. Lab. y Talleres 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 742 (2014), 187-190 Nucl. instrum. methods phys. res., Sect. A Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 0168-9002 370417 http://zaguan.unizar.es/record/71209/files/texto_completo.pdf Postprint 126654 http://zaguan.unizar.es/record/71209/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:71209 articulos driver 2022-06-17-15:01:08 ARTICLE