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An analytic model for the collisional transport and poloidal asymmetry distribution of impurities in tokamak plasmas

Patrick Maget 1, * Pierre Manas 1 Judith Frank 2 Timothée Nicolas 3 Olivier Agullo 2 Xavier Garbet 1
* Corresponding author
1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
2 PIIM - Physique des interactions ioniques et moléculaires
3 CPHT - Centre de Physique Théorique [Palaiseau]
Abstract : The coupling between the poloidal distribution and the collisional flux of impurities can be exploited to derive a simplified analytical model covering toroidal rotation and electrostatic potential asymmetry effects, valid in the Pfirsh-Schlüter regime. This model is compared with earlier works and with the drift-kinetic code NEO, which includes the full Fokker-Planck collision operator. The low computational cost of the model, compared to NEO, is particularly adapted for fast integrated simulation purposes.
Keywords : tokamak neoclassic impurity transport asymmetry rotation
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Patrick Maget, Pierre Manas, Judith Frank, Timothée Nicolas, Olivier Agullo, et al.. An analytic model for the collisional transport and poloidal asymmetry distribution of impurities in tokamak plasmas. Plasma Physics and Controlled Fusion, IOP Publishing, 2020, 62, pp.105001. ⟨10.1088/1361-6587/aba7f9⟩. ⟨cea-02572297v2⟩

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