Les missions du poste

In the framework of the collaboration between CEA-IRFM and Renaissance Fusion, funded by the French BPI (Banque Publique d'Investissement), we are offering a fixed-term research position (CDD) focused on the development of the gyrokinetic code GYSELA (new generation: Gysela-X), dedicated to first-principles simulations of turbulent and neoclassical transport in magnetically confined plasmas.
Gysela-X is developed in modern C++ within major national and European projects, including PEPR NumPEx and Horizon Europe EoCoE-III, and targets exascale HPC architectures with GPU acceleration.

The successful candidate will develop and implement a fully non-axisymmetric solver of the Vlasov-type equation for stellarator-relevant magnetic equilibria. The work will focus on:
Numerical treatment of advection in 3D magnetic fields,
Accurate and efficient modeling of electron trajectories,
Integration and optimization within Gysela-X on modern HPC systems.

Le profil recherché

PhD in applied mathematics, computational physics, plasma physics, or a related field,
Strong expertise in numerical methods for PDEs,
Solid C++ programming skills,
Experience in high-performance computing (parallelization, GPU) is an asset.
The position is at the interface of plasma physics, applied mathematics, and high-performance computing.

In line with CEA's commitment to the integration of disabled people, this position is open to all. The CEA offers accommodation and/or organizational possibilities for the integration of disabled workers.