Commonwealth Fusion Systems (CFS) is currently constructing the SPARC tokamak - a high field (12T) machine designed to achieve an energy gain of Q~11 when running in H-mode with DT fuel. Many SPARC components have already been manufactured, assembly and commissioning have begun, and preparation for operations in 2027 is underway. At each phase in the design-build-operations cycle, CFS...
The design of a commercially viable inertial fusion energy (IFE) power plant presents a formidable optimization challenge, balancing near-term technological capabilities, scientific uncertainties and the final reactor scale performance. Addressing this requires an integrated digital engineering approach. Focused Energy (FE) is developing a comprehensive digital twin (DTw) of an IFE power...
We present PathSim, an open-source Python framework for modular, event-driven system modeling with applications to digital twin development in fusion energy research. PathSim enables researchers to construct complex, time-dependent models through a block-based architecture that supports dynamic system topology, hierarchical modeling, and seamless integration with existing scientific computing...
The development of inertial fusion energy (IFE) reactors requires chambers that can withstand extreme cyclic loads, making multiphysics coupling a critical element of digital engineering for predicting integrity and safety. At EX-Fusion, we are developing a demonstration chamber—our “triple-one-ten” project—designed for 10 Hz operation with 1–10 kJ laser shots on deuterium pellets for up to...
Comprehensive digital twins for fusion devices require many components: multifidelity multiphysics modeling and simulation to describe complicated, interconnected systems; reduced-order and surrogate creation capabilities to enable designer-focused modeling; uncertainty quantification and stochastic simulation to inform design decisions; interfaces and connections to data warehouses and other...
A comprehensive digital twin for fusion energy requires advanced tools for handling complex 3D data. This presentation outlines an integrated technology suite that streamlines the entire simulation workflow, from mesh generation to data analysis. We have developed a robust pipeline that automates the creation of simulation-ready meshes from CAD geometry, significantly accelerating the...
Coupling of fusion device codes to engineering analysis codes present unique challenges in the physical and temporal scales the computations must take into account, range of coordinate systems, high dimensionality of phase space, and geometric complexity. These challenges require new approaches that enable efficient coupling on exascale supercomputers and afford adherence to physical...
We present our recent and upcoming developments on open-source components of an IMAS simulation environment aiming at digital-twin functionality for tokamaks. These range from a convenient pulse schedule and waveform editor to control and actuator simulator interfaces and examples, stateful synthetic diagnostics, simulation databases, (experimental) data analysis pipelines, experimental...
