The effect of three-dimensional fields on bounce averaged particle drifts in a tokamak
نویسنده
چکیده
The impact of applied 3D magnetic fields on the bounce-averaged precessional drifts in a tokamak plasma are calculated. Local 3D MHD equilibrium theory is used to construct solutions to the equilibrium equations in the vicinity of a magnetic surface for a large aspect ratio circular tokamak perturbed by applied 3D fields. Due to modulations of the local shear caused by near-resonant Pfirsch-Schlüter currents, relatively weak applied 3D fields can have a large effect on trapped particle precessional drifts. Pacs. nos. 52.20.Dq, 52.35.Qz, 52.55.Dy
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