3:30 pm KPTC 106
The Jiangmen Underground Neutrino Observatory (JUNO) JUNO is a 20-kton liquid scintillator central detector, surrounded by 35-kton water pool and nearly 1000 m2 of plastic scintillator veto on top. It is located in a shallow underground laboratory with an overburden of 1800 meters water equivalent in southern China.
JUNO began the filling in water then liquid scintillator in December 2025. During this period, the detector’s performance was studied extensively. Data collection started in August 2025, and after a calibration phase, stable data acquisition was achieved.
The first 59.1 days of data collected by JUNO have been analyzed, allowing the determination of two neutrino oscillation parameters with a precision improved by a factor of 1.6 compared to the combination of all previous measurements.
In this seminar, I will present the performance of the JUNO detector during this initial data-taking period, along with the first scientific results in neutrino oscillation physics.