How to get MCNP
For people who are NOT employees at LANL:
MCNP is distributed by the
Radiation Safety Information Computational Center website (RSICC), based at the Oak Ridge National Laboratory in Oak Ridge, Tennessee.
Because MCNP is an export-controlled code, the distribution through RSICC is governed by US laws and Department of Energy regulations. US citizens may request either the executable-only distribution package or the distribution package that includes source coding. Non-US citizens should generally request the executable-only distribution package to avoid possible delays in approval.
The MCNP6 distribution package from RSICC includes executables for MacOS, Linux, and Windows. The package also includes full documentation (release notes & user manual), the MCNP Reference Collection, many suites of verification-validation problems, a number of utility programs or scripts, and extensive nuclear data libraries for MCNP.
For further information or specific questions regarding obtaining MCNP6 from RSICC, please contact RSICC directly:
RSICC email