The performance results from the commissioning run and the physics analysis status of JUNO experiment

Bei-Zhen Hu^1*, Yee Bob Hsiung², Guey-Lin Lin³

¹Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, Taiwan
²Department of Physics, National Taiwan University, Taipei, Taiwan
³Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan

* Presenter:Bei-Zhen Hu, email:beizhenhu@mail.ntut.edu.tw

The Jiangmen Underground Neutrino Observatory (JUNO) is located in Jiangmen, Guangdong, China, beneath an overburden of approximately 700 meters of rock. The central detector consists of an acrylic sphere filled with 20 kilotons of liquid scintillator and is instrumented with around 17,600 20-inch photomultiplier tubes (PMTs) and approximately 25,600 3-inch PMTs.
The primary scientific goal of the JUNO experiment is to determine the neutrino mass hierarchy with a significance of 3 to 4 σ over six years of data taking, as well as to make high-precision measurements of the neutrino mixing parameters.
Construction of the detector was completed by the end of 2024. After several months of liquid scintillator filling and system commissioning, JUNO officially began physics data taking on August 26, 2025.
In this talk, I will present an overview of the detector commissioning process and share the current status of physics analysis.

Keywords: neutrino oscillation , neutrino mass hierarchy, JUNO