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- W4236076297 abstract "Non-axisymmetric magnetic perturbations can fundamentally change neoclassical transport in tokamaks by distorting particle orbits on deformed or broken flux surfaces. This so-called non-ambipolar transport is highly complex, and eventually a numerical simulation is required to achieve its precise description and understanding. A new delta f particle code (POCA) has been developed for this purpose using a modi ed pitch angle collision operator preserving momentum conservation. POCA was successfully benchmarked for neoclassical transport and momentum conservation in axisymmetric con guration. Non-ambipolar particle flux is calculated in the non-axisymmetric case, and results show a clear resonant nature of non-ambipolar transport and magnetic braking. Neoclassical toroidal viscosity (NTV) torque is calculated using anisotropic pressures and magnetic fi eld spectrum, and compared with the generalized NTV theory. Calculations indicate a clear B2 dependence of NTV, and good agreements with theory on NTV torque pro les and amplitudes depending on collisionality." @default.
- W4236076297 created "2022-05-12" @default.
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- W4236076297 date "2012-04-11" @default.
- W4236076297 modified "2023-09-27" @default.
- W4236076297 title "Delta f Monte Carlo Calculation Of Neoclassical Transport In Perturbed Tokamaks" @default.
- W4236076297 doi "https://doi.org/10.2172/1063119" @default.
- W4236076297 hasPublicationYear "2012" @default.
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