EFIT - Power Deposition Distribution and Neutron Source Calculations by Means of MCNPX

This document was prepared as a contribution to Deliverable 1.6 in the framework of the EFIT project:the Euuropean Facility for Industrial Transmutation (VI Framework Program, EUROTRANS). This is a conceptual design for transmuting minor actinides in ADS (Accelerator Driven Systems). The proton beam ha an energy of 800 MeV and impinges on a lead target, providing the neutron source for the sub-critical system. Lead is also the coolant far the 384 MWth core. The U-free core has been designed by means of the deterministic code ERANOS, while here some neutronic features are investigated by means of the Monte Carlo code MCNPX: the neutron source, the keff, the ks, the proton current, the power deposition distribution in the target and in the core (power peaks and axial form factors). These latter results are passed to FZK and will be used as inputs for the thermohydraulic analyses. All these quantities have been evaluated at Beginning of Cycle.