Comparison of the hydraulics in concentric and three feeder XT-ADS windowless spallation target designs

The hydraulics in concentric and three feeder XT-ADS windowless target designs are compared in order to determine the feasibility of a three feeder design and to determine whether the results of the optimisation of the target nozzle on concentric designs can be translated to three feeder designs. Application of computational fluid dynamics simulation techniques allows the design team to compare the hydraulics in the three feeder design to the hydraulics in concentric designs. From the results of the simulations, it is concluded that the hydraulics in concentric designs are comparable to the hydraulics in a three feeder design. Therefore, it is decided to carry out the optimisation of the target nozzle for concentric designs and translate the results later to a three feeder design. Finally, the resulting optimised target design should be evaluated in simulations and experiments. (authors)