This project uses the gyrokinetic particle-in-cell code XGC to study fundamental edge physics issues critical to the success of ITER and the magnetic fusion energy programs.
This project uses the gyrokinetic particle-in-cell code XGC to study two fundamental edge physics issues critical to the success of ITER and the magnetic fusion energy programs: (1) understanding and thus promoting innovative ways to achieve the transition from low-to high-confinement mode operation; and (2) a high-enough plasma edge pedestal in the high-mode with a wall heat-flux density below the material limit.
Achieving ITER's goal of a 10-fold energy gain depends critically on resolving these two issues. The nonlocal, multiscale, nonlinear plasma physics across the open and closed magnetic field geometries, which demand unstructured triangular mesh and neutral particle recycling, make the problem an extremely large one that requires trillions of marker particles for ITER.
Based on previous INCITE allocations, for physics the project will focus on the large-size effect (compared to the ion gyroradius) in the Fusion Power Operation phase (FPO) of ITER and in future magnetic-fusion reactors.