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Fluorescence emission of the JUNO liquid scintillator

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arxiv 2501.09988 v4 pith:UINFQATR submitted 2025-01-17 physics.ins-det hep-ex

Fluorescence emission of the JUNO liquid scintillator

M. Beretta , F. Houria , F. Ferraro , D. Basilico , A. Brigatti , B. Caccianiga , A. Caslini , C. Landini
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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. Tuv\'e C. Venettacci G. Verde L. Votano
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classification physics.ins-det hep-ex
keywords scintillatorjunoliquidbenzeneemissionfluorescenceneutrinoabsorption
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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, 2, 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 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

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Cited by 2 Pith papers

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    First event-by-event Cherenkov separation from sub-MeV electrons in liquid argon enables a proof-of-principle ALP search excluding new parameter space despite no observed excess.

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    physics.ins-det 2026-07 conditional novelty 6.0

    A neutron activation and radiochemical precipitation method achieves a minimum detectable concentration of 2.9·10⁻¹⁶ g/g for 40K in organic liquid scintillators.