The Daya Bay Reactor Neutrino Experiment is an international collaboration of scientists from China, the United States, and other countries. The experiment is designed to measure the properties of neutrinos, the most abundant particle in the universe. The experiment is located in the Daya Bay
From Wikipedia
The Daya Bay Reactor Neutrino Experiment was a China-based multinational particle physics project studying neutrinos, in particular neutrino oscillations. The experiment operated in 2011–2020. The multinational collaboration includes researchers from China, Chile, the United States, Taiwan, Russia, and the Czech Republic. The US side of the project is funded by the US Department of Energy's Office of High Energy Physics.