Article

OpenMC, an open-source software developed by Argonne National Laboratory and MIT, enhances nuclear fission and fusion reactor simulations by predicting subatomic particle behavior, thereby improving safety and efficiency. Recently awarded the R&D-100-Award, it facilitates virtual experiments to expedite development processes, with widespread adoption across national labs, universities, and private firms, particularly in the US and Europe, supported by the DOE's Fusion Energy Sciences program. Optimized for exascale supercomputers, OpenMC allows for precise reactor simulations, benefiting from collaborative contributions from its developers.