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

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 \XE 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

This work was supported by the following agencies and institutions: the Ministerio de Economía y Competitividad of Spain under grants CONSOLIDER-Ingenio 2010 CSD2008-0037 (CUP) and FPA2009-13697-C04-04; the Director, Office of Science, Office of Basic Energy Sciences, of the US Department of Energy under contract no. DE-AC02-05CH11231; and the Portuguese FCT and FEDER through the program COMPETE, project PTDC/FIS/103860/2008. J. Renner (LBNL) acknowledges the support of a US DOE NNSA Stewardship Science Graduate Fellowship under contract no. DE-FC52-08NA28752

Institute of Physics (IOP)

Author: Álvarez Puerta, Vicente
Borges, Filipa I.G.M.
Cárcel García, Sara
Castel, J.
Cebrián, Susana
Cervera Villanueva, Anselmo
Conde, Carlos A.N.
Dafni, Theopisti
Dias, T.H.V.T
Díaz Medina, José
Egorov, M.
Esteve, Raúl
Evtoukhovitch, P.
Fernandes, L.M.P.
Ferrario, Paola
Ferreira, Antonio Luis
Freitas, Elisabete D.C.
Gehman, Victor M.
Gil Ortiz, Alejandro
Goldschmidt, Azriel
Gómez, H.
Gómez Cadenas, Juan José
González-Díaz, Diego
Gutiérrez, Rafael María
Hauptman, John M.
Hernando Morata, J.A.
Herrera, D.C.
Iguaz, F.J.
Irastorza, Igor Garcia
Jinete, M.A.
Labarga, Luis A.
Laing, Andrew
Liubarsky, Igor
Lopes, J.A.M.
Lorca Galindo, David
Losada, Marta
Luzón, Gloria
Marí, A.
Martín-Albo Simón, Justo
Martínez Pérez, Alberto
Miller, Tom P.
Moiseenko, A.
Monrabal Capilla, Francesc
Monteiro, Cristina M.B.
Mora, Francisco José
Moutinho, L.M.
Muñoz Vidal, J.
Natal da Luz, H.
Navarro, G.
Nebot Guinot, Miquel
Nygren, David R.
Oliveira, Carlos A.B.
Palma, R.
Pérez, Javier Martin
Pérez Aparicio, J.L.
Renner, Joshua
Ripoll Masferrer, Lluís
Rodríguez, Ángel Y.
Rodríguez Samaniego, Javier
Santos, Filomena P.
dos Santos, Joaquim M.F.
Seguí, Laura
Serra Díaz-Cano, Luis
Shuman, Derek B.
Simón Estévez, Ander
Sofka, C.
Sorel, Michel
Toledo, J.F.
Tomás, A.
Torrent Collell, Jordi
Tsamalaidze, Zviadi
Vázquez, D.
Veloso, João F.C.A.
Villar, José Ángel
Webb, R.C.
White, James T.
Yahlali Haddou, Nadia
Date: 2020 February 15
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 \XE 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
This work was supported by the following agencies and institutions: the Ministerio de Economía y Competitividad of Spain under grants CONSOLIDER-Ingenio 2010 CSD2008-0037 (CUP) and FPA2009-13697-C04-04; the Director, Office of Science, Office of Basic Energy Sciences, of the US Department of Energy under contract no. DE-AC02-05CH11231; and the Portuguese FCT and FEDER through the program COMPETE, project PTDC/FIS/103860/2008. J. Renner (LBNL) acknowledges the support of a US DOE NNSA Stewardship Science Graduate Fellowship under contract no. DE-FC52-08NA28752
Document access: http://hdl.handle.net/2072/372228
Language: eng
Publisher: Institute of Physics (IOP)
Rights: Tots els drets reservats
Subject: Isòtops radioactius -- Desintegració
Radioisotopes -- Decay
Cambres d’ionització
Ionization Chambers
Reconeixement de formes (Informàtica)
Pattern recognition Systems
Anàlisi de conglomerats
Cluster analysis
Calibratge
Calibration
Title: Initial results of NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment
Type: info:eu-repo/semantics/article
Repository: Recercat

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