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Overview of CSNS tantalum cladded tungsten solid Target-1 and Target-2
Shaohong Wei,Ruiqiang Zhang,Quan Ji,Changfeng Li,Bin Zhou,Youlian Lu,Jun Xu,Ke Zhou,Chongguang Zhao,Ning He,Wen Yin,Tianjiao Liang 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.5
A solid tungsten target was used at the China Spallation Neutron Source (CSNS) with 100 kW protonbeam power. To improve the lifetime, hot isostatic pressing (HIP) process was selected to bond tantalumcladding with tungsten plates. Radioactive isotope 182Ta, an activation product of tantalum, was found inthe cooling water after a period of operation, however, no radioactive isotopes of 187W was found, whichshows the tantalum layer remained mostly intact. The CSNS Target-1 had been operating safely for threeyears and was replaced by Target-2 in August 2020