Characterisation of NEXT-DEMO using xenon Kα X-rays

The NEXT experiment aims to observe the neutrinoless double beta decay of 136Xe in a high-pressure xenon gas TPC using electroluminescence (EL) to amplify the signal from ionization. Understanding the response of the detector is imperative in achieving a consistent and well understood energy measure...

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Detalles Bibliográficos
Autores: Lorca Galindo, David, Martín-Albo Simón, Justo, Laing, Andrew, Ferrario, Paola, Gómez Cadenas, Juan José, Álvarez Puerta, Vicente, Borges, Filipa I.G.M., Camargo, Manuel A., Cárcel García, Sara, Cebrián, Susana, Cervera Villanueva, Anselmo, Conde, Carlos A.N., Dafni, Theopisti, Díaz Medina, José, Esteve, Raúl, Fernandes, L.M.P., Ferreira, Antonio Luis, Freitas, Elisabete D.C., Gehman, Victor M., Goldschmidt, Azriel, Gómez, H., González-Díaz, Diego, Gutiérrez, Rafael María, Hauptman, John M., Hernando Morata, J.A., Herrera, D.C., Irastorza, Igor Garcia, Labarga, Luis A., Liubarsky, Igor, Losada, Marta, Luzón, Gloria, Marí, A., Martínez Lema, Gonzalo, Martínez Pérez, Alberto, 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., 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., Torrent Collell, Jordi, Tsamalaidze, Zviadi, Veloso, João F.C.A., Webb, R.C., White, James T., Yahlali Haddou, Nadia
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2014
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:10256/17008
Acceso en línea:http://hdl.handle.net/10256/17008
Access Level:acceso abierto
Palabra clave:Detectors de radiació
Nuclear counters
Detectors
Física -- Instruments
Physical instruments
Electroluminescència
Electroluminescence
Descripción
Sumario:The NEXT experiment aims to observe the neutrinoless double beta decay of 136Xe in a high-pressure xenon gas TPC using electroluminescence (EL) to amplify the signal from ionization. Understanding the response of the detector is imperative in achieving a consistent and well understood energy measurement. The abundance of xenon K-shell X-ray emission during data taking has been identified as a multitool for the characterisation of the fundamental parameters of the gas as well as the equalisation of the response of the detector. The NEXT-DEMO prototype is a ~ 1.5 kg volume TPC filled with natural xenon. It employs an array of 19 PMTs as an energy plane and of 256 SiPMs as a tracking plane with the TPC light tube and SiPM surfaces being coated with tetraphenyl butadiene (TPB) which acts as a wavelength shifter for the VUV scintillation light produced by xenon. This paper presents the measurement of the properties of the drift of electrons in the TPC, the effects of the EL production region, and the extraction of position dependent correction constants using Kα X-ray deposits. These constants were used to equalise the response of the detector to deposits left by gammas from 22Na

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