Open AccessJUNO Detector Design & Status
Author(s) -
Zhimin Wang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2156/1/012113
Subject(s) - scintillator , neutrino , photomultiplier , detector , photocathode , physics , neutrino detector , solar neutrino , cosmic ray , nuclear physics , optics , neutrino oscillation , electron
The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation liquid-scintillator reactor neutrino experiment under construction in Southern China. It is a multi-purpose experiment with a wide range of applications in neutrino physics, ranging from a neutrino mass ordering (NMO) determination, the detection of solar, geo-, atmospheric neutrinos, and Supernova neutrinos, to the measurement on particular oscillation parameters with sub-percentage precision. The JUNO central detector (CD) is designed to reach an energy resolution of 3% at 1MeV. The detector is being installed in a recently excavated experimental hall, 50 m wide and located under 700 m of granite overburden (1800 m.w.e.). The CD contains a 35.4-meter diameter acrylic vessel filled with 20-kt of LAB-based liquid scintillator, making it the largest liquid-scintillator detector of its kind in the world. The scintillation light will be read-out by 17612 20” photomultiplier tubes (PMTs) and 25600 3” PMTs, reaching a photocathode coverage higher than 75%. A water pool filled with ultrapure water equipped with 2,400 PMTs surrounds the CD; on top of the water pool, a 3-layer plastic scintillator tracker completes the JUNO veto system for cosmic muons detection. JUNO construction will be completed in 2022. This talk presents the detector design and status of the experiment.