APPLICATION FOR TRANSPORTATION CASK GEOMETRY WITH MONTE CARLO CODE PHITS TO SHIELDING ANALYSIS

For cross-check analysis in JNES, we are examining for applying three-dimensional continuous energy Monte Carlo code PHITS(1) (Particle and Heavy Ion Transport code System) to shielding safety analysis of fuel cask. In this work, PHITS was tested by simulations and their evaluations for some hypothetical damaged transportation cask geometries. Analytical results of PHITS clearly show the specific behavior of each radiation with some kinds of evaluated values and graphical spatial distributions. Accordingly, we expect that PHITS will be effective to evaluate and understand unexpected results. In future, applying PHITS to shielding safety analysis of fuel casks will become powerful tool by optimizing calculation method, benchmark analysis and so on.