Speaker
Description
The Jiangmen Underground Neutrino Observatory (JUNO) experiment is a multi-purpose neutrino experiment with a rock overburden of 700 m, located at south China. The main JUNO detector consists of a 20-kton liquid scintillator central detector (CD) with ~78% photomultiplier coverage and 3% at 1 MeV energy resolution, surrounded by a 30-kton water pool that serves as a muon veto system and shields CD from radioactivity, and an external plastic-scintillator Top Tracker. JUNO's primary goals are to determine the neutrino mass ordering and to measure several oscillation parameters with sub-percent precision. The experiment also has a rich program of scientific research with neutrinos from different natural sources, such as the atmosphere, Earth, Sun and supernova explosions.
Following more than ten years of detector construction and eight-month commissioning phase, JUNO started the physics data taking in the end of August 2025.
Benefiting from its unprecedentedly large volume and excellent performance, JUNO is also an effective muon detector, recording approximately 10 Hz of muon events. In addition, JUNO is capable of detecting atmospheric neutrinos, which provide a unique opportunity to study the impact of matter effects in neutrino oscillations. This presentation will describe JUNO’s progress on its various physics measurements, as well as its performance in reconstructing muons and atmospheric neutrinos and the opportunities enabled by these capabilities.