Gyrokinetic simulations of neoclassical transport using a minimal collision operator

Guilhem Dif-Pradalier (1) , Virginie Grandgirard (1) , Yanick Sarazin (1) , Xavier Garbet (1) , Philippe Ghendrih (1) , P Angelino (1)

1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique

Conventional neoclassical predictions are successfully recovered within a gyrokinetic framework using a minimal Fokker–Planck collision operator. This operator is shown to accurately describe some essential features of neoclassical theory, namely the neoclassical transport, the poloidal rotation and the linear damping of axisymmetric flows while interestingly preserving a high numerical efficiency. Its form makes it especially adapted to Eulerian or Semi–Lagrangian schemes.

Keywords: Gyrokinetics; neoclassical theory

Domains: Nonlinear Sciences [physics]; Plasma Physics [physics.plasm-ph]

Guilhem Dif-Pradalier, Virginie Grandgirard, Yanick Sarazin, Xavier Garbet, Philippe Ghendrih, et al.. Gyrokinetic simulations of neoclassical transport using a minimal collision operator. AIP Conference Proceedings, 2008, pp.53 - 63. ⟨10.1063/1.3033731⟩. ⟨cea-01468364⟩