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Radon and material radiopurity assessment for the NEXT double beta decay experiment

The ”Neutrino Experiment with a Xenon TPC” (NEXT), intended to investigate the neutrinoless double beta decay using a high-pressure xenon gas TPC filled with Xe enriched in 136Xe at the Canfranc Underground Laboratory in Spain, requires ultra-low background conditions demanding an exhaustive control of material radiopurity and environmental radon levels. An extensive material screening process is underway for several years based mainly on gamma-ray spectroscopy using ultra-low backgroundgermanium detectors in Canfranc but also on mass spectrometry techniques like GDMS and ICPMS. Components from shielding, pressure vessel, electroluminescence and high voltage elements and energy and tracking readout planes have been analyzed, helping in the final design of the experiment and in the construction of the background model. The latest measurements carried out will be presented and the implication on NEXT of their results will be discussed. The commissioning of the NEW detector, as a first step towards NEXT, has started in Canfranc; in-situ measurements of airborne radon levels were taken there to optimize the system for radon mitigation and will be shown too

The NEXT Collaboration acknowledges funding support from the following agencies and institutions: the European Research Council under the AdvancedGrant 339787-NEXTand the T-REX Starting Grant ref. ERC-2009-StG-240054 of the IDEAS program of the 7th EU Framework Program; the Spanish Ministerio de Economía y Competitividad under grants CONSOLIDER-Ingenio 2010 CSD2008-0037 (CUP), FPA2009-13697-C04-04, and FIS2012-37947- C04; the Director, Office of Science, Office of Basic Energy Sciences of the US DoE under Contract no. DE-AC02- 05CH11231; and the Portuguese FCT and FEDER through the programCOMPETE, Projects PTDC/FIS/103860/2008 and PTDC/FIS/112272/2009

© AIP Conference Proceedings, 2015, vol. 1672, núm. 1, p. 060002

American Institute of Physics (AIP)

Author: Cebrián, Susana
Pérez, Javier Martin
Bandac, I.
Labarga, Luis A.
Álvarez Puerta, Vicente
Barrado, A. I.
Bettini, Alessandro
Borges, Filipa I.G.M.
Camargo, Manuel A.
Cárcel García, Sara
Cervera Villanueva, Anselmo
Conde, Carlos A.N.
Conde, E.
Dafni, Theopisti
Díaz Medina, José
Esteve, Raúl
Fernández, M.
Ferrario, Paola
Freitas, Elisabete D.C.
Fernandes, L.M.P.
Gehman, Victor M.
Goldschmidt, Azriel
Gómez Cadenas, Juan José
González-Díaz, Diego
Gutiérrez, Rafael María
Hauptman, John M.
Morata, J. A.Hernando
Herrera, D.C.
Irastorza, Igor Garcia
Laing, Andrew
Liubarsky, Igor
López-March, N.
Lorca Galindo, David
Losada, Marta
Luzón, Gloria
Marí, A.
Martín-Albo Simón, Justo
Martínez Pérez, Alberto
Martínez Lema, Gonzalo
Miller, Tom P.
Monrabal Capilla, Francesc
Monserrate, M.
Monteiro, Cristina M.B.
Mora, Francisco José
Moutinho, L.M.
Muñoz Vidal, J.
Nebot Guinot, Miquel
Nygren, David R.
Oliveira, Carlos A.B.
Ortiz de Solórzano, A.
Pérez Aparicio, J.L.
Querol, M.
Renner, Joshua
Ripoll Masferrer, Lluís
Rodríguez Samaniego, Javier
Santos, Filomena P.
dos Santos, Joaquim M.F.
Serra Díaz-Cano, Luis
Shuman, Derek B.
Simón Estévez, Ander
Sofka, C.
Sorel, Michel
Toledo, J.F. ​​​​
Torrent Collell, Jordi
Tsamalaidze, Zviadi
Veloso, João F.C.A.
Villar, José Ángel
Webb, R.C.
White, James T.
Yahlali Haddou, Nadia
Date: 2015 August 17
Abstract: The ”Neutrino Experiment with a Xenon TPC” (NEXT), intended to investigate the neutrinoless double beta decay using a high-pressure xenon gas TPC filled with Xe enriched in 136Xe at the Canfranc Underground Laboratory in Spain, requires ultra-low background conditions demanding an exhaustive control of material radiopurity and environmental radon levels. An extensive material screening process is underway for several years based mainly on gamma-ray spectroscopy using ultra-low backgroundgermanium detectors in Canfranc but also on mass spectrometry techniques like GDMS and ICPMS. Components from shielding, pressure vessel, electroluminescence and high voltage elements and energy and tracking readout planes have been analyzed, helping in the final design of the experiment and in the construction of the background model. The latest measurements carried out will be presented and the implication on NEXT of their results will be discussed. The commissioning of the NEW detector, as a first step towards NEXT, has started in Canfranc; in-situ measurements of airborne radon levels were taken there to optimize the system for radon mitigation and will be shown too
The NEXT Collaboration acknowledges funding support from the following agencies and institutions: the European Research Council under the AdvancedGrant 339787-NEXTand the T-REX Starting Grant ref. ERC-2009-StG-240054 of the IDEAS program of the 7th EU Framework Program; the Spanish Ministerio de Economía y Competitividad under grants CONSOLIDER-Ingenio 2010 CSD2008-0037 (CUP), FPA2009-13697-C04-04, and FIS2012-37947- C04; the Director, Office of Science, Office of Basic Energy Sciences of the US DoE under Contract no. DE-AC02- 05CH11231; and the Portuguese FCT and FEDER through the programCOMPETE, Projects PTDC/FIS/103860/2008 and PTDC/FIS/112272/2009
Format: application/pdf
Citation: 025210
ISSN: 0094-243X (versió paper)
1551-7616 (versió electrònica)
Document access: http://hdl.handle.net/10256/17044
Language: eng
Publisher: American Institute of Physics (AIP)
Collection: Versió preprint del document publicat a: http://dx.doi.org/10.1063/1.4927990
Articles publicats (D-EMCI)
Is part of: © AIP Conference Proceedings, 2015, vol. 1672, núm. 1, p. 060002
Rights: Tots els drets reservats
Subject: Detectors de radiació
Nuclear counters
Cambres d’ionització
Ionization chambers
Title: Radon and material radiopurity assessment for the NEXT double beta decay experiment
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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