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 resolu...

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Detalles Bibliográficos
Autores: 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
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2013
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/17005
Acceso en línea:http://hdl.handle.net/10256/17005
Access Level:acceso abierto
Palabra clave:Isòtops radioactius -- Desintegració
Radioisotopes -- Decay
Cambres d'ionització
Ionization Chambers
Reconeixement de formes (Informàtica)
Pattern recognition Systems
Anàlisi de conglomerats
Cluster analysis
Calibratge
Calibration
Descripción
Sumario: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

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