Three-dimensional effects on energetic particle confinement and stability

D. A. Spong

doi:10.1063/1.3575626

Three-dimensional effects on energetic particle confinement and stability

D. A. Spong

Plasma Theory and Modeling

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

51 Scopus citations

Abstract

Energetic particle populations in magnetic confinement systems are sensitive to symmetry-breaking effects due to their low collisionality and long confined path lengths. Broken symmetry is present to some extent in all toroidal devices. As such effects preclude the existence of an ignorable coordinate, a fully three-dimensional analysis is necessary, beginning with the lowest order (equilibrium) magnetic fields. Three-dimensional techniques that have been extensively developed for stellarator configurations are readily adapted to other devices such as rippled tokamaks and helical states in reversed field pinches. This paper will describe the methods and present an overview of recent examples that use these techniques for the modeling of energetic particle confinement, Alfvén mode structure and fast ion instabilities.

Original language	English
Article number	056109
Journal	Physics of Plasmas
Volume	18
Issue number	5
DOIs	https://doi.org/10.1063/1.3575626
State	Published - May 2011

Funding

Useful interactions with a number of colleagues, including E. D’Azevedo, S. Hirshman, A. Könies, G. Kramer, Z. Lin, M. Schaffer, R. Sanchez, K. Shinohara, E. Strumberger, K. Toi, Y. Todo, and M. van Zeeland have aided in the preparation of this work. Research sponsored by the U.S. Department of Energy under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC through the GSEP (Gyrokinetic Simulation of Energetic Particle Turbulence and Transport) SciDAC project. This research used resources provided under the INCITE program of the Oak Ridge Leadership Computing Facility, located in the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the Department of Energy under Contract No. DE-AC05-00OR22725. Also, resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 were used.

Funders	Funder number
Office of Science of the Department of Energy
U.S. Department of Energy	DE-AC05-00OR22725
Office of Science	DE-AC02-05CH11231
National Energy Research Scientific Computing Center

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/1.3575626

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Three-dimensional effects on energetic particle confinement and stability

Abstract

Funding

UN SDGs

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