Access is granted only to:

| Component | Minimum Recommendation | |-----------|------------------------| | | Linux (RHEL 7+, Ubuntu 18.04+) – Windows via WSL or Virtual Machine | | CPU | x86_64, 4+ cores (more = better for parallel runs) | | RAM | 8 GB (16–64 GB recommended for large geometries) | | Storage | 10 GB (includes cross-section libraries) | | Compiler | GNU Fortran (gfortran) 9+ or Intel Fortran (ifati) | | MPI | OpenMPI or MPICH for parallel runs |

Your request will undergo a review process for export control compliance. This can take several weeks, especially for non-US citizens.

After logging into RSICC, search for . You will be required to:

After approval and payment of any applicable fees, RSICC typically ships the software on physical DVDs or provides a secure download link. Installation Requirements

If you are a student or hobbyist, consider starting with or Geant4 to learn particle transport concepts. If you are a professional in nuclear safety or shielding, investing the time and resources to obtain MCNP6.2 is well worth it – it remains the most validated, feature-rich Monte Carlo code in existence.