Abstract:
Tungsten and tantalum were selected as China Spallation Neutron Source (CSNS) target materials, and the tungsten target plate was prepared by hot isostatic pressure. The interfacial bond of tantalum cladded tungsten target is good, and the average bonding strength of the tantalum layer is larger than 64.07 MPa. The tungsten target plate was divided into 11 different thickness pieces which were installed in the target container in sequence and in parallel. The parallel flow was used to dissipate heat, and the dissipation heat of the target was simulated by CFD software. The cooling water gap between the target plates is 1.2 mm. The maximum temperature of target is 182.3 ℃, and the cooling water temperature rises by 7.1 ℃ when the target runs at 100 kW. The parameters of the target meet the requirements of CSNS after more than half a year’s trial operation.