Item


Near-intrinsic energy resolution for 30-662 keV gamma rays in a high pressure xenon electroluminescent TPC

We present the design, data and results from the NEXT prototype for Double Beta and Dark Matter (NEXT-DBDM) detector, a high-pressure gaseous natural xenon electroluminescent time projection chamber (TPC) that was built at the Lawrence Berkeley National Laboratory. It is a prototype of the planned NEXT-100 136Xe neutrino-less double beta decay (0νββ) experiment with the main objectives of demonstrating near-intrinsic energy resolution at energies up to 662 keV and of optimizing the NEXT-100 detector design and operating parameters. Energy resolutions of ∼1% FWHM for 662 keV gamma rays were obtained at 10 and 15 atm and ∼5% FWHM for 30 keV fluorescence xenon X-rays. These results demonstrate that 0.5% FWHM resolutions for the 2459 keV hypothetical neutrino-less double beta decay peak are realizable. This energy resolution is a factor 7-20 better than that of the current leading 0νββ experiments using liquid xenon and thus represents a significant advancement. We present also first results from a track imaging system consisting of 64 silicon photo-multipliers recently installed in NEXT-DBDM that, along with the excellent energy resolution, demonstrates the key functionalities required for the NEXT-100 0νββ search

© Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013, vol. 708, p. 101-114

Elsevier

Author: Álvarez Puerta, Vicente
Cervera Villanueva, Anselmo
Borges, F. I.G.
Cárcel García, Sara
Castel, J.
Cebrián, S.
Cervera Villanueva, Anselmo
Condel, C.A.N.
Dafni, T.
Dias, T.H.V.T.
Díaz Medina, José
Egorov, M.
Esteve, R.
Evtoukhovitch, P.
Fernandes, L.M. P.
Ferrario, Paola
Ferreira, A.L.
Freitas, E.D.C.
Gehman, V.M.
Gil, A.
Goldschmidt, A.
Gómez, H.
Gómez Cadenas, Juan José
González-Díaz, D.
Gutiérrez, R.M.
Hauptman, J.
Hernando Morata, J.A.
Herrera, D.C.
Iguaz, F.J.
Irastorza, I.G.
Jinete, M.A.
Labarga, L.
Liubarsky, Igor
Lopes, J.A.M.
Lorca Galindo, David
Losada, M.
Luzón, G.
Marí, A.
Martín-Albo Simón, Justo
Martínez Pérez, Alberto
Miller, T.
Moiseenko, A.
Monrabal Capilla, Francesc
Monteiro, C.M.B.
Mora, F.J.
Moutinho, L.M.
Muñoz Vidal, J.
Natal Da Luz, H.
Navarro, G.
Nebot Guinot, Miquel
Nygren, D.
Oliveira, C.A.B.
Palma, R.
Pérez, J.
Pérez Aparicio, J.L.
Renner, J.
Ripoll Masferrer, Lluís
Rodríguez, A.
Rodríguez Samaniego, Javier
Santos, F. P.
Dos Santos, J. M.F.
Segui, L.
Serra Díaz-Cano, Luis
Shuman, D.
Simón Estévez, Ander
Sofka, C.
Sorel, Michel
Toledo, J.F.
Tomás, A.
Torrent, J.
Tsamalaidze, Z.
Vázquez, D.
Veloso, J.F.C.A.
Villar, J.A.
Webb, R.C.
White, J.T.
Yahlali Haddou, Nadia
Date: 2013 April 21
Abstract: We present the design, data and results from the NEXT prototype for Double Beta and Dark Matter (NEXT-DBDM) detector, a high-pressure gaseous natural xenon electroluminescent time projection chamber (TPC) that was built at the Lawrence Berkeley National Laboratory. It is a prototype of the planned NEXT-100 136Xe neutrino-less double beta decay (0νββ) experiment with the main objectives of demonstrating near-intrinsic energy resolution at energies up to 662 keV and of optimizing the NEXT-100 detector design and operating parameters. Energy resolutions of ∼1% FWHM for 662 keV gamma rays were obtained at 10 and 15 atm and ∼5% FWHM for 30 keV fluorescence xenon X-rays. These results demonstrate that 0.5% FWHM resolutions for the 2459 keV hypothetical neutrino-less double beta decay peak are realizable. This energy resolution is a factor 7-20 better than that of the current leading 0νββ experiments using liquid xenon and thus represents a significant advancement. We present also first results from a track imaging system consisting of 64 silicon photo-multipliers recently installed in NEXT-DBDM that, along with the excellent energy resolution, demonstrates the key functionalities required for the NEXT-100 0νββ search
Format: application/pdf
ISSN: 0168-9002
Document access: http://hdl.handle.net/10256/14135
Language: eng
Publisher: Elsevier
Collection: Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.nima.2012.12.123
Articles publicats (D-EMCI)
Is part of: © Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013, vol. 708, p. 101-114
Rights: Tots els drets reservats
Subject: Electroluminiscència
Electroluminescence
Energia nuclear
Nuclear energy
Title: Near-intrinsic energy resolution for 30-662 keV gamma rays in a high pressure xenon electroluminescent TPC
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

Subjects

Authors