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29 March 2024 |
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Background analysis and status of the ANAIS dark matter project | J. Amaré
; S. Cebrián
; C. Cuesta
; E. García
; C. Ginestra
; M. Martínez
; M. A. Oliván
; Y. Ortigoza
; A. Ortiz de Solórzano
; C. Pobes
; J. Puimedón
; M. L. Sarsa
; J. A. Villar
; P. Villar
; | Date: |
10 Jun 2015 | Abstract: | ANAIS (Annual modulation with NaI Scintillators) is a project aiming to set
up at the new facilities of the Canfranc Underground Laboratory (LSC), a large
scale NaI(Tl) experiment in order to explore the DAMA/LIBRA annual modulation
positive result using the same target and technique. Two 12.5 kg each NaI(Tl)
crystals provided by Alpha Spectra took data at the LSC in the ANAIS-25 set-up.
The comparison of the background model for the ANAIS-25 prototypes with the
experimental results is presented. ANAIS crystal radiopurity goals have been
achieved for Th-232 and U-238 chains, but a Pb-210 contamination
out-of-equilibrium was identified, whose origin has been studied. The high
light collection efficiency obtained with these prototypes allows to anticipate
an energy threshold of the order of 1 keVee. A new detector, with improved
performances, was received in March 2015 and very preliminary results are
shown. | Source: | arXiv, 1506.3210 | Services: | Forum | Review | PDF | Favorites |
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