High-performance large-area boron carbide thin film successfully developed at China Spallation Neutron Source

High-performance large-area boron carbide thin film successfully developed at China Spallation Neutron Source
The reporter learned from the China Spallation Neutron Source (CSNS) on October 16 that the CSNS detector team has recently successfully prepared a high-performance large-scale boron plating device that meets the needs of neutron detectors using a self-developed magnetron sputtering special device for large-area boron plating. Area boron carbide film sample, the area of ​​a single piece reaches 1500 mm × 500 mm, the film thickness is 1 micron, and the thickness uniformity in the full size range is better than ±1.32%. It is the largest area boron carbide film used for neutron detection in the world.