Gyrokinetic particle simulation of neoclassical transport in the pedestal/scrape-off region of a tokamak plasma

S. Ku; C. S. Chang; M. Adams; J. Cummings; F. Hinton; D. Keyes; S. Klasky; W. Lee; Z. Lin; S. Parker

doi:10.1088/1742-6596/46/1/012

Gyrokinetic particle simulation of neoclassical transport in the pedestal/scrape-off region of a tokamak plasma

S. Ku
, C. S. Chang
, M. Adams
, J. Cummings
, F. Hinton
, D. Keyes
, S. Klasky
, W. Lee
, Z. Lin
, S. Parker

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

A gyrokinetic neoclassical solution for a diverted tokamak edge plasma has been obtained for the first time using the massively parallel Jaguar XT3 computer at Oak Ridge National Laboratory. The solutions show similar characteristics to the experimental observations: electric potential is positive in the scrape-off layer and negative in the H-mode layer, and the parallel rotation is positive in the scrape-off layer and at the inside boundary of the H-mode layer. However, the solution also makes a new physical discovery that there is a strong ExB convective flow in the scrape-off plasma. A general introduction to the edge simulation problem is also presented.

Original language	English
Article number	012
Pages (from-to)	87-91
Number of pages	5
Journal	Journal of Physics: Conference Series
Volume	46
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/46/1/012
State	Published - Oct 1 2006

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abstract = "A gyrokinetic neoclassical solution for a diverted tokamak edge plasma has been obtained for the first time using the massively parallel Jaguar XT3 computer at Oak Ridge National Laboratory. The solutions show similar characteristics to the experimental observations: electric potential is positive in the scrape-off layer and negative in the H-mode layer, and the parallel rotation is positive in the scrape-off layer and at the inside boundary of the H-mode layer. However, the solution also makes a new physical discovery that there is a strong ExB convective flow in the scrape-off plasma. A general introduction to the edge simulation problem is also presented.",

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AU - Ku, S.

AU - Chang, C. S.

AU - Adams, M.

AU - Cummings, J.

AU - Hinton, F.

AU - Keyes, D.

AU - Klasky, S.

AU - Lee, W.

AU - Lin, Z.

AU - Parker, S.

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AB - A gyrokinetic neoclassical solution for a diverted tokamak edge plasma has been obtained for the first time using the massively parallel Jaguar XT3 computer at Oak Ridge National Laboratory. The solutions show similar characteristics to the experimental observations: electric potential is positive in the scrape-off layer and negative in the H-mode layer, and the parallel rotation is positive in the scrape-off layer and at the inside boundary of the H-mode layer. However, the solution also makes a new physical discovery that there is a strong ExB convective flow in the scrape-off plasma. A general introduction to the edge simulation problem is also presented.

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Gyrokinetic particle simulation of neoclassical transport in the pedestal/scrape-off region of a tokamak plasma

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