JUNO: From Commissioning to Discovery in Neutrino Physics

Yu-Chen Tung^1*, Bei-Zhen Hu³, Yee Hsiung²

¹Department of Physics, National Kaohsiung Normal University, Kaohsiung, Taiwan
²Department of Physics, National Taiwan University, Taipei, Taiwan
³Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, Taiwan

* Presenter:Yu-Chen Tung, email:yctung@mail.nknu.edu.tw

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20-kiloton liquid scintillator detector located 700 meters underground in southern China. With construction completed, JUNO began data taking in the second half of 2025 using its full liquid scintillator detector. JUNO’s primary goal is to determine the neutrino mass ordering by observing fine oscillation patterns in the energy spectrum of reactor antineutrinos from two nearby nuclear power plants, located about 53 km away. Its excellent energy resolution (3% at 1 MeV) and large target mass will also enable sub-percent precision measurements of oscillation parameters within just a few years of operation. Beyond reactor neutrinos, JUNO will study solar, atmospheric, geo-, and supernova neutrinos, offering a broad range of physics opportunities. This talk will introduce the JUNO detector, review its early data-taking status, and highlight the exciting physics prospects in the years ahead.

Keywords: juno, neutrino mass ordering, neutrino oscillation