Speaker
Description
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20‑kt liquid‑scintillator detector operating at a baseline of ~53 km from two nuclear reactor complexes in southern China. Its primary goal is to determine the neutrino mass ordering via reactor antineutrinos, exploiting excellent energy resolution and low background.
Since detector commissioning in 2025, JUNO has been taking stable data. JUNO has delivered several key results: a precision measurement of the reactor antineutrino spectrum, yielding the most precise determination of |Δm₃₁²| from reactor experiments; a 2.3σ preference for the Normal Mass Ordering when combined with external constraints; and the first geo‑neutrino measurement from JUNO, giving a flux of 73 ± 11 TNU.
The future program extends well beyond mass ordering. JUNO will continue to improve solar neutrino oscillation parameters, provide real‑time supernova alerts, and search for rare processes. In particular, the large target mass and ultra‑low backgrounds make JUNO a promising platform for neutrinoless double‑beta decay (0νββ) searches through isotope loading (¹³⁶Xe or ¹³⁰Te) in the liquid scintillator. These efforts, together with atmospheric and astrophysical neutrino studies, will establish JUNO as a multi‑purpose facility for neutrino physics over the next decade.
This talk will present the design, current operational status, recent physics results, and prospective upgrade plans of the JUNO experiment.