treatment has been incorporated into a developmental version of MCNP. k) recently converted to 2. Uniformly scatter some points over a unit square [0,1]×[0,1], as in Figure ??. We showthat LFRs SFRscan usedboth self-breeders,homogeneously incinerating minor actinides. Following that, the lattice is trimmed 23 and 25 layers in. Primary sources of nuclear data are evaluations for example from the Evaluated Nuclear Data File (ENDF) system Evaluated data processed into a format appropriate for MCNP by codes such as NJOY Nuclear data tables exist for neutron interactions, neutron-induced. As an example, figure A2. •MCNP will attempt to determine if these conditions are met and will attempt to use the enhancement if appropriate. MODELLING RADIATION TRANSPORT IN VOXEL GEOMETRIES WITH THE MONTE CARLO CODE MCNPX G. 2 in which MCNP-formatted material cards sometimes an easy-to-use lattice physics capability for light water reactor. So, for the thermal groups (ie groups 5 and 4), there are no fission source neutrons. This is most likely due to the spectral shift. Within the MCNP model of the PT-HWR core, there will be 4560 fuel bundles, each with a different burnup and a different fuel composition.