大国重器传来好消息！江门中微子实验大科学装置正式运行

Core Insights - The Jiangmen Underground Neutrino Observatory (JUNO) has successfully completed the filling of 20,000 tons of liquid scintillator and has officially begun data collection, marking it as the first large-scale and high-precision neutrino-specific scientific facility in operation globally [1][2] Group 1: Project Overview - The JUNO project was proposed by the Institute of High Energy Physics, Chinese Academy of Sciences in 2008, receiving strategic support in 2013 and commencing construction in 2015 [2] - The detector is located 700 meters underground in Jiangmen, Guangdong Province, and is capable of detecting neutrinos from nuclear power plants located 53 kilometers away [1][2] Group 2: Technical Achievements - The initial data collected during the trial operation indicates that the key performance indicators of the JUNO detector have met or exceeded design expectations, enabling it to address significant questions in particle physics, particularly neutrino mass ordering [1][3] - The detector's design includes a 20,000-ton liquid scintillator and a complex structure with various components, including 20,000 photomultiplier tubes, ensuring high precision in measuring neutrino interactions [3] Group 3: Future Implications - The JUNO experiment has a planned operational lifespan of 30 years and can be upgraded to become the world's most sensitive experiment for neutrinoless double beta decay, which could provide insights into fundamental questions about the universe [3] - The spokesperson for the JUNO collaboration emphasized that the completion of the detector filling and the start of data collection represents a breakthrough in understanding the nature of matter and the universe [3]