A Photofission Delayed $\gamma$-ray Spectra Calculation Tool for the Conception of a Nuclear Material Characterization Facility

International audience; The photonic interrogation analysis is a nondestructive technique allowing to identify and quantify nuclear fissile materials in nuclear waste packages. This paper details an automatic procedure which has been developed to simulate the delayed $\gamma$-ray spectra for several actinide photofissions. This calculation tool will be helpful for the fine conception (collimation, shielding, noise background optimizations, etc.) and for the on-line analysis of such a facility.