Fluorescence emission of the JUNO liquid scintillator

Articolo

Data di Pubblicazione:

2025

Citazione:

Fluorescence emission of the JUNO liquid scintillator / M. Beretta, F. Houria, F. Ferraro, D. Basilico, A. Brigatti, B. Caccianiga, A. Caslini, C. Landini, P. Lombardi, L. Pelicci, E. Percalli, G. Ranucci, A.C. Re, C. Clementi, F. Ortica, A. Romani, V. Antonelli, M.G. Giammarchi, L. Miramonti, P. Saggese, M.D.C. Torri, S. Aiello, G. Andronico, A. Barresi, A. Bergnoli, M. Borghesi, R. Brugnera, R. Bruno, A. Budano, A. Cammi, V. Cerrone, R. Caruso, D. Chiesa, C. Coletta, L.V. D'Auria, S. Dusini, A. Fabbri, G. Felici, A. Garfagnini, N. Giudice, A. Gavrikov, M. Grassi, N. Guardone, L. Lastrucci, I. Lippi, L. Loi, C. Lombardo, F. Mantovani, S.M. Mari, A. Martini, M. Montuschi, M. Nastasi, D. Orestano, A. Paoloni, F. Petrucci, E. Previtali, B. Ricci, G. Sava, A. Serafini, C. Sirignano, M. Sisti, L. Stanco, E. Stanescu Farilla, V. Strati, C. Tuvè, C. Venettacci, G. Verde, L. Votano. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 20:5(2025 May 09), pp. 1-18. [10.1088/1748-0221/20/05/p05009]

Abstract:

JUNO is a huge neutrino detector that will use 20 kton of organic liquid scintillator as its detection medium. The scintillator is a mixture of linear alkyl benzene (LAB), 2.5 g/L of 2,5-diphenyloxazole (PPO) and 3 mg/L of 1,4-Bis(2-methylstyryl)benzene (Bis-MSB). The main goal of JUNO is to determine the Neutrino Mass Ordering [1-3]. In order to achieve this purpose, good energy and position reconstruction is required, hence a complete understanding of the optical characteristics of the liquid scintillator is mandatory. In this paper we present the first measurements on the JUNO scintillator emission spectrum, absorption length and fluorescence time distribution performed respectively with a spectrofluorimeter, a spectrophotometer and a custom made setup of the liquid scintillator produced by the JUNO purification plants.

Tipologia IRIS:

01 - Articolo su periodico

Keywords:

Liquid detectors; Scintillators; scintillation and light emission processes (solid gas and liquid scintillators); Large detector systems for particle and astroparticle physics; Neutrino detectors;

Elenco autori: