GYSELA-X

The GYSELA-X code models turbulence in tokamak plasmas.

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GYSELA-X

The 5D GYSELA-X (for GYrokinetic SEmi-LAgrangian) code1 is developed at CEA/IRFM for 20 years through national and international collaborations with a strong interaction between physicists, mathematicians and computer scientists. GYSELA-X is a global full-f nonlinear gyrokinetic code that simulates electrostatic plasma turbulence and transport in the core of Tokamak devices. It evolves the complete (so-called “full-f”) 5-dimensional (3 space coordinates, 2 velocity coordinates) guiding-centre distribution function in the electrostatic limit in a full portion of torus (so-called “global”). Versatile sources of heat, momentum, particles and vorticity are commonly used to achieve steady-state in long simulation runs. The time-evolution of this distribution function $f(r,\theta,\phi,v_\parallel,\mu)$ is governed by the gyro-averaged Vlasov equation, the so-called gyrokinetic equation, which is self-consistently coupled to the 3D quasi-neutrality equation (electrostatic and long wavelength limit of Maxwell’s equations). From the numerical point of view, GYSELA-X is based on a semi-Lagrangian scheme.


  1. Virginie Grandgirard, Jérémie Abiteboul, Julien Bigot, Thomas Cartier-Michaud, Nicolas Crouseilles, et al.. A 5D gyrokinetic full-f global semi-lagrangian code for flux-driven ion turbulence simulations. 2015. ↩︎

GYSELA-X Team

Permanent Staff

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Dr. Julien Bigot

CEA

Maison de la Simulation

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Dr. Thomas Padioleau

CEA

Maison de la Simulation

Non-permanent Staff

GYSELA-X could not be where it is without the many post-docs, temp engineers, PhD. students and interns that worked and still work on it.

Our warmest thanks go to them.