On March 30, in Dongguan, Guangdong, the Institute of High Energy Physics (Institute of High Energy Physics) of the Chinese Academy of Sciences held the launch meeting of the second phase of the China Spallation Neutron Source project, marking the launch of this large scientific device known as the "super microscope" for exploring the microstructure of materials. , the upgrade task officially started construction.

  As one of the country's major scientific and technological infrastructures, after the completion of the second phase of the China Spallation Neutron Source project, the research capabilities of the device will be greatly improved, and the experimental accuracy and efficiency will be significantly improved. It will be able to explore the scientific frontier and solve major national needs and industrial development. Provide scientific and technological tools for key scientific issues.

  The second phase of the China Spallation Neutron Source project mainly constructs 11 neutron spectrometers and experimental terminals. After completion, the number of neutron spectrometers will increase to 20, and the country's first muon experimental terminal and high-energy proton experimental terminal will be added. At the same time, the target beam power of the China Spallation Neutron Source accelerator will be increased from the 100 kilowatt design indicator in the first phase to 500 kilowatts.

  According to reports, the preliminary design budget for the second phase of the project was approved by the National Development and Reform Commission in January 2024, and the construction period is 5 years and 9 months. After the completion of the second phase of the project, the China Spallation Neutron Source will be able to produce more neutrons in the same time, which will not only effectively shorten the experimental time, but also enable the experiment to have higher resolution, measure smaller samples, and study faster. Dynamic Process.

  The China Spallation Neutron Source is the first major national science and technology infrastructure in the Guangdong-Hong Kong-Macao Greater Bay Area, providing an important scientific and technological core for the Guangdong-Hong Kong-Macao Greater Bay Area to build a comprehensive national science center and an international science and technology innovation center. The construction of the second phase of the China Spallation Neutron Source project will effectively promote the original innovation capabilities of the Guangdong-Hong Kong-Macao Greater Bay Area and form a cluster advantage with other large scientific facilities to contribute to the scientific and technological development and industrial upgrading of the Guangdong-Hong Kong-Macao Greater Bay Area. (Reporter Sun Zifa)

Editor in charge: [Li Ji]