Initial results of NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment

V. Álvarez, F. I.G. Borges, S. Cárcel, J. Castel, S. Cebrián, A. Cervera, C. A.N. Conde, T. Dafni, T. H.V.T. Dias, J. Díaz, M. Egorov, R. Esteve, P. Evtoukhovitch, L. M.P. Fernandes, P. Ferrario, A. L. Ferreira, E. D.C. Freitas, V. M. Gehman, A. Gil, A. GoldschmidtH. Gómez, J. J. Gómez-Cadenas, D. González-Díaz, R. M. Gutiérrez, J. Hauptman, J. A. Hernando Morata, D. C. Herrera, F. J. Iguaz, I. G. Irastorza, M. A. Jinete, L. Labarga, A. Laing, I. Liubarsky, J. A.M. Lopes, D. Lorca, M. Losada, G. Luzón, A. Marí, J. Martín-Albo, A. Martínez, T. Miller, A. Moiseenko, F. Monrabal, C. M.B. Monteiro, F. J. Mora, L. M. Moutinho, J. Muñoz Vidal, H. Natal Da Luz, G. Navarro, M. Nebot-Guinot, D. Nygren, C. A.B. Oliveira, R. Palma, J. Pérez, J. L. Pérez Aparicio, J. Renner, L. Ripoll, A. Rodríguez, J. Rodríguez, F. P. Santos, J. M.F. Dos Santos, L. Seguí, L. Serra, D. Shuman, A. Simón, C. Sofka, M. Sorel, J. F. Toledo, A. Tomás, J. Torrent, Z. Tsamalaidze, D. Vázquez, J. F.C.A. Veloso, J. A. Villar, R. Webb, J. T. White, N. Yahlali

Research output: Contribution to journalArticle

Abstract

NEXT-DEMO is a large-scale prototype of the NEXT-100 detector, an electroluminescent time projection chamber that will search for the neutrinoless double beta decay of 136XE using 100-150 kg of enriched xenon gas. NEXT-DEMO was built to prove the expected performance of NEXT-100, namely, energy resolution better than 1% FWHM at 2.5 MeV and event topological reconstruction. In this paper we describe the prototype and its initial results. A resolution of 1.75% FWHM at 511 keV (which extrapolates to 0.8% FWHM at 2.5 MeV) was obtained at 10 bar pressure using a gamma-ray calibration source. Also, a basic study of the event topology along the longitudinal coordinate is presented, proving that it is possible to identify the distinct dE/dx of electron tracks in high-pressure xenon using an electroluminescence TPC.

Original languageEnglish (US)
Article numberP04002
JournalJournal of Instrumentation
Volume8
Issue number4
DOIs
StatePublished - Apr 1 2013

Keywords

  • Double-beta decay detectors
  • Pattern recognition, cluster finding, calibration and fitting methods
  • Time projection chambers

ASJC Scopus subject areas

  • Mathematical Physics
  • Instrumentation

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    Álvarez, V., Borges, F. I. G., Cárcel, S., Castel, J., Cebrián, S., Cervera, A., Conde, C. A. N., Dafni, T., Dias, T. H. V. T., Díaz, J., Egorov, M., Esteve, R., Evtoukhovitch, P., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Freitas, E. D. C., Gehman, V. M., Gil, A., ... Yahlali, N. (2013). Initial results of NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment. Journal of Instrumentation, 8(4), [P04002]. https://doi.org/10.1088/1748-0221/8/04/P04002