Characterisation of NEXT-DEMO using xenon Ka X-rays

[EN] 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 me...

Descripción completa

Detalles Bibliográficos
Autores: Lorca, D., Martín Albo, J., Laing, A., Ferrario, P., Gómez Cadenas, J.J., Álvarez, V., Borges, F.I.G., Camargo, M., Esteve Bosch, Raul|||0000-0002-1289-6938, Fernandes, L.M.P., Ferreira, A.L., Marí Romero, Antonio Francisco, Mora Mas, Francisco José|||0000-0003-2281-9546, Pérez Aparicio, José Luis, Toledo Alarcón, José Francisco|||0000-0002-9782-4510
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/62112
Acceso en línea:https://riunet.upv.es/handle/10251/62112
Access Level:acceso abierto
Palabra clave:Charge transport
Multiplication and electroluminescence in rare gases and liquids
Double-beta decay detectors
Time projection chambers
MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURAS
TECNOLOGIA ELECTRONICA
Descripción
Sumario:[EN] 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 Ka X-ray deposits. These constants were used to equalise the response of the detector to deposits left by gammas from 22Na.

Similares en LA Referencia