Artículo
Scintillator ageing of the T2K near detectors from 2010 to 2021
Autor/es | Abe K.
Akhlaq N. Akutsu R. Ali A. Alt C. Andreopoulos C. Antonova M. Aoki S. T2K Collaboration Megías Vázquez, Guillermo Daniel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2022 |
Fecha de depósito | 2023-10-26 |
Publicado en |
|
Resumen | The T2K experiment widely uses plastic scintillator as a target for neutrino interactions and an active medium for the measurement of charged particles produced in neutrino interactions at its near detector complex. Over ... The T2K experiment widely uses plastic scintillator as a target for neutrino interactions and an active medium for the measurement of charged particles produced in neutrino interactions at its near detector complex. Over 10 years of operation the measured light yield recorded by the scintillator based subsystems has been observed to degrade by 0.9-2.2% per year. Extrapolation of the degradation rate through to 2040 indicates the recorded light yield should remain above the lower threshold used by the current reconstruction algorithms for all subsystems. This will allow the near detectors to continue contributing to important physics measurements during the T2K-II and Hyper-Kamiokande eras. Additionally, work to disentangle the degradation of the plastic scintillator and wavelength shifting fibres shows that the reduction in light yield can be attributed to the ageing of the plastic scintillator. The long component of the attenuation length of the wavelength shifting fibres was observed to degrade by 1.3-5.4% per year, while the short component of the attenuation length did not show any conclusive degradation. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España European Union (UE) JSPS. Japan |
Identificador del proyecto | SEV-2016-0588
PID2019-107564GB-I00 PGC2018-099388-BI00 713673 754496 RISE-GA822070-JENNIFER2 2020 RISE-GA872549-SK2HK JP16H06288 JP18K03682 JP18H03701 JP18H05537 JP19J01119 JP19J22440 JP19J22258 JP20H00162 JP20H00149 JP20J20304 |
Cita | Abe K., , Akhlaq N., , Akutsu R., , Ali A., , Alt C., , Andreopoulos C., ,...,Megías Vázquez, G.D. (2022). Scintillator ageing of the T2K near detectors from 2010 to 2021. Journal of Instrumentation, 17 (10), P10028. https://doi.org/10.1088/1748-0221/17/10/P10028. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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Scintillator ageing-3-37.pdf | 8.989Mb | [PDF] | Ver/ | |
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