Developed by
TopMC®
Multi-Functional Program for Neutronics Calculation, Nuclear Design and Safety Evaluation
A large-scale nuclear design software developed by FDS Consortium for more than 30 years — taking radiation transport calculation as the core, covering the whole process of neutronics calculation from depletion to shutdown dose rate.
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Highlight 1 of 8: At SOFT 2026: AI-Based Program for Dose Calculation and Safety Evaluation — TopMC
01 Explore
Everything about TopMC, in one place
Products
Overview with three editions, eight calculation functions and the advanced features that set TopMC apart.
Applications
How TopMC is applied across nuclear energy and nuclear technology, with real user and partner cases.
Resources
Publications, papers and step-by-step tutorials for TopMC users.
Events
Where to meet us — conferences, exhibitions and training — plus release notes.
About FDS
The FDS Consortium behind more than 30 years of TopMC development.
News
Announcements, technical articles and conference reports from the TopMC team.
Contact Us
Request a trial, a quote or technical support from our team.
02 Recognition
What the field says about TopMC
Nobel Laureate in Physicsovercoming the main challenges in complex nuclear system design and safety
no doubt has become a very important tool in this field
Member, Royal Swedish Academy of Engineering Sciences (IVA)The superior code TopMC has been developed with capabilities of a very high efficiency and used as intelligent tool for the nuclear researchers and engineers
International Coordinating Leader for Neutronics and Nuclear Analysis, ITERrepresented a major contribution to the progress in recent years in the field of neutronics
one of the leading teams in the relevant area in the world
03 Blog
From the TopMC blog
Key Publications — Monte Carlo Methods for Core Loading, Burnup and Shielding
Peer-reviewed papers on calculation methods: a loading pattern optimization method based on discrete differential evolution, a data decomposition method for full-core Monte Carlo transport–burnup calculation, and Monte Carlo shielding design with a large perturbation calculation method. Published in Annals of Nuclear Energy and Nuclear Science and Techniques.
Read article →September 30, 2026Key Publications — Radiation Field Visualization and Real-Time Dose Assessment
Peer-reviewed papers on visualization: real-time dose assessment and visualization of the radiation field for the EAST tokamak, and an image-based method for regulating 3D structured data sets. Published in Fusion Engineering and Design and Lecture Notes in Electrical Engineering.
Read article →September 30, 2026Key Publications — Benchmarking and Validation of SuperMC with ITER and SINBAD
Peer-reviewed papers on testing and verification: benchmarking of the CAD-based SuperMC with the ITER benchmark model, and validation of its shielding analysis capability with SINBAD. Published in Fusion Engineering and Design and EPJ Web of Conferences.
Read article →