MC/DC: Monte Carlo Dynamic Code

MC/DC is an open-source, Python-based Monte Carlo radiation transport code that combines rapid methods development with scalable, high-performance execution on modern computing systems. Originally initiated by the Center for Exascale Monte Carlo Neutron Transport (CEMeNT), MC/DC development is now led by the Center for Advancing the Radiation Resilience of Electronics (CARRE).

Features

• Monte Carlo neutron transport (with photon and charged-particle capabilities under development)
• Time-dependent, steady-state, and eigenvalue simulations
• Multiple physics fidelities (continuous-energy/multi-group, single-scattering/condensed-history)
• Distributed-memory parallel execution with MPI
• Machine-portable Python implementation accelerated by Numba JIT compilation
• Extensible architecture for rapid methods development and prototyping

Installation

Install the latest stable release from PyPI:

pip install mcdc

For development installation and additional options, see the Installation Guide.

Documentation

Complete documentation is available on Read the Docs, including:

• Installation
• User Guide
• API Reference
• Contribution Guide

Citing

If you use MC/DC in published work, please cite one or more of the following references as appropriate:

• MC/DC Origins
  I. Variansyah, et al. (2023). Development of MC/DC: a performant, scalable, and portable Python-based Monte Carlo neutron transport code. Proceedings of the ANS Mathematics & Computation Conference 2025, Niagara Falls, Canada. https://doi.org/10.48550/arXiv.2305.07636

• MC/DC JOSS Article
  J. Morgan, et al. (2024). Monte Carlo / Dynamic Code (MC/DC): An accelerated Python package for fully transient neutron transport and rapid methods development. Journal of Open Source Software, 9(96), 6415. https://doi.org/10.21105/joss.06415

Reporting Bugs and Issues

To report bugs, request features, or ask questions, please open a GitHub Issue.