At around 4 a.m. on January 15, all buildings of the Phase II project of the China Spallation Neutron Source (CSNS) were successfully capped in Songshan Lake, Dongguan City.
CSNS is a major national scientific facility primarily used for the research of material microstructures, known as the "Super Microscope," which was launched on January 9, 2024. Upon completion, its neutron scattering experimental capability will rank among the world's advanced levels, providing strong technical support for original innovations in materials science, life and health, new energy, and other fields.

The construction and installation aspect of the Phase II project includes five buildings: the Linear Accelerator Equipment Building (Phase II), Linear Cryogenic Hall, Experimental Support Equipment Building, Backscattering Spectrometer Experimental Station, Radioactive Solid Waste Temporary Storage Hall, and High-Energy Proton Experimental Hall. Built within the boundaries of Phase I, the Phase II project requires complex connections with the existing structures of Phase I. Moreover, the project features significant architectural process attributes and strict design requirements, with all standards exceeding those of conventional construction projects.

The successful capping of the High-Energy Proton Experimental Hall before the Chinese New Year has laid a solid foundation for the subsequent equipment installation and system commissioning. This milestone achievement of the CSNS Phase II project will inject strong momentum into enhancing the regional innovation capability and serve as an important demonstration of China's ability to build major scientific facilities.
Reporter: Li Jingru
Photo: Nanfang Plus
Editor: Wei Shen, James Campion, Shen He