Measurement of radon-induced backgrounds in the NEXT double beta decay experiment

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Novella, P.
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Palmeiro, B.
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​​​​Simón Estévez, Ander
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​​​​Sorel, Michel
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Adams, C.
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​​​​Ferrario, Paola
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​​​​Martínez Lema, Gonzalo
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​​​​Monrabal Capilla, Francesc
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Zuzel, G.
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​​​Gómez Cadenas, Juan José
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​​​​Álvarez Puerta, Vicente
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Arazi, L.
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​​​​Azevedo, C.D.R.
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Bailey, K.
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Ballester Merelo, Francisco José
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​​​​Benlloch Rodríguez, J.M.
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​​​​Borges, Filipa I.G.M.
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Botas, A.
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​Cárcel García, Sara
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Carrión, J.V.
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Cebrián, Susana
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​​​​Conde, Carlos A.N.
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​​​​Díaz Medina, José
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Diesburg, M.
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Escada, J.
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​​​​Esteve, Raúl
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Felkai, R.
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Fernandes, A.F.M.
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Fernandes, L.M.P.
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​​​​Ferreira, Antonio Luis
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​​​​Freitas, Elisabete D.C.
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Generowicz, J.
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​​​​Goldschmidt, Azriel
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​​​​González-Díaz, Diego
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Guenette, R.
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​​​​Gutiérrez, Rafael María
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Hafidi, K.
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Hauptman, John M.
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​​​​Henriques, C.A.O.
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Hernández, Andrés I.
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​​​​Hernando Morata, J.A.
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Herrero, Vicente
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Johnston, S.
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​​​​Jones, Benjamin J.P.
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Kekic, M.
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​​​​Labarga, Luis A.
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​​​​Laing, Andrew
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Lebrun, P.
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López-March, N.
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Losada, Marta
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Mano, R.D.P.
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​​​​Martín-Albo Simón, Justo
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​​​​Martínez Pérez, Alberto
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​​​​McDonald, Alison D.
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​​​​Monteiro, Cristina M.B.
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​​​​Mora, Francisco José
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Muñoz Vidal, J.
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Musti, M.
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Nebot Guinot, Miquel
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​Nygren, David R.
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Para, A.
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​​​​Pérez, Javier Martin
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Psihas, F.
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Querol, M.
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​​​Renner, Joshua
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Repond, J.
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Riordan, S.
orcId Ripoll Masferrer, Lluís​ researcherId Ripoll Masferrer, Lluís​ scopusId Ripoll Masferrer, Lluís​ ​
Ripoll Masferrer, Lluís
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​​​​Rodríguez Samaniego, Javier
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Rogers, L.
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Romo-Luque, C.
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​​​​Santos, Filomena P.
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​​​​dos Santos, Joaquim M.F.
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Sofka, C.
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Stiegler, T.
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Toledo, J.F.
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​​​​Torrent Collell, Jordi
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​​​​Veloso, João F.C.A.
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Webb, R.C.
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​​​​White, James T.
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​​​​Yahlali Haddou, Nadia
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The measurement of the internal 222Rn activity in the NEXT-White detector during the so-called Run-II period with 136Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT. The activity is measured through the alpha production rate induced in the fiducial volume by 222Rn and its alpha-emitting progeny. The specific activity is measured to be (38.1 ± 2.2 (stat.) ± 5.9 (syst.)) mBq/m3. Radon-induced electrons have also been characterized from the decay of the 214Bi daughter ions plating out on the cathode of the time projection chamber. From our studies, we conclude that radon-induced backgrounds are sufficiently low to enable a successful NEXT-100 physics program, as the projected rate contribution should not exceed 0.1 counts/yr in the neutrinoless double beta decay sample ​
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