CSNS Project Construction

The China Spallation Neutron Source (CSNS) is designed to accelerate proton beam pulses to 1.6GeV at 25Hz repetition rate, striking on a solid metal target to produce spallation neutrons for neutron scattering experiment with 20 spectrometers. The accelerator provides a beam power of 100kW for the target in the first phase and then 500kW in the second phase at the same repetition rate and in the same target station. The project construction launched in 2011 and it is planned to complete the first phase project in March 2018 for governmental acceptance. Now the accelerator construction and machine commissioning have been completed and the initial beam commissioning is in progress. Target station and three spectrometers are under final installation. This paper will update the recent construction status of the CSNS project.