Gyrokinetic Calculations of the Neoclassical Radial Electric Field in Stellarator Plasmas | Zendy

J. L. V. Lewandowski | Zendy; J. D. Williams | Zendy; Allen H. Boozer | Zendy; Zhifang Lin | Zendy

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Gyrokinetic Calculations of the Neoclassical Radial Electric Field in Stellarator Plasmas

Author(s) -

J. L. V. Lewandowski,

J. D. Williams,

Allen H. Boozer,

Zhifang Lin

Publication year - 2001

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/781486

Subject(s) - stellarator , electric field , plasma , physics , computational physics , monte carlo method , noise (video) , magnetic field , field (mathematics) , flux (metallurgy) , statistical physics , nuclear physics , materials science , computer science , mathematics , quantum mechanics , statistics , artificial intelligence , metallurgy , image (mathematics) , pure mathematics

A novel method to calculate the neoclassical radial electric field in stellarator plasmas is described. The method, which does not have the inconvenience of large statistical fluctuations (noise) of standard Monte Carlo technique, is based on the variation of the combined parallel and perpendicular pressures on a magnetic surface. Using a three-dimensional gyrokinetic delta f code, the calculation of the radial electric field in the National Compact Stellarator Experiment has been carried out. It is shown that a direct evaluation of radial electric field based on a direct calculation of the radial particle flux is not tractable due to the considerable noise

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