14–24 Jul 2025
CICG - International Conference Centre - Geneva, Switzerland
Europe/Zurich timezone

Construction and Commissioning of the JUNO detector

17 Jul 2025, 15:50
15m
Room A

Room A

Talk Neutrino Astronomy & Physics NU

Speaker

Cong Guo (Institute of High Energy Physics, Chinese Academy of Science)

Description

The Jiangmen Underground Neutrino Observatory (JUNO) is a state-of-the-art neutrino physics experiment located in South China. With 20 ktons of ultra-pure Liquid Scintillator (LS), JUNO aims to achieve groundbreaking measurements, including the determination of Neutrino Mass Ordering (NMO) and the precise measurement of three neutrino oscillation parameters with sub-percent precision. The JUNO detector consists of a Central Detector (CD), a water Cherenkov detector, and a top tracker detector. The CD is equipped with 17,612 20-inch PhotoMultiplier Tubes (PMTs) and 25,600 3-inch PMTs, delivering an energy resolution better than 3% at 1 MeV. Four independent calibration systems are employed to ensure an absolute energy scale uncertainty of less than 1% across the reactor antineutrino energy range. Beyond reactor neutrinos, JUNO has a broad physics program, including studies of solar neutrinos, supernova neutrinos, geoneutrinos, atmospheric neutrinos, and searches for physics beyond the Standard Model, such as nucleon decay. The detector installation was completed in December 2024, and the LS filling and system commissioning are currently underway. In this talk, I will present the detector design, construction milestones, and the commissioning performance of JUNO's subsystems.

Collaboration(s) JUNO

Author

Cong Guo (Institute of High Energy Physics, Chinese Academy of Science)

Presentation materials