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Updated: Jul 2, 2026
07:17
Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
Published on: August 1, 2017
Neoclassical simulation of tokamak plasmas using the continuum gyrokinetic code TEMPEST
1Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|September 4, 2008
Summary
This study uses the TEMPEST code for gyrokinetic neoclassical simulations in tokamak plasmas, revealing self-consistent electric field dynamics and transport crucial for fusion energy research.
Area of Science:
- Plasma Physics
- Fusion Energy
- Computational Physics
Background:
- Tokamak plasmas exhibit complex transport phenomena governed by neoclassical effects.
- Accurate simulation of these effects is vital for achieving controlled nuclear fusion.
Purpose of the Study:
- To develop and apply a fully nonlinear gyrokinetic simulation framework for tokamak plasmas.
- To investigate the self-consistent evolution of the neoclassical electric field and its impact on plasma transport.
Main Methods:
- Utilized the TEMPEST continuum code for fully nonlinear (full-f) gyrokinetic simulations.
- Employed a five-dimensional phase space grid and a method of lines approach with finite differences.
- Solved the gyrokinetic Poisson equation for a self-consistent neoclassical electric field.
Main Results:
- Computed radial particle and heat fluxes, and the geodesic-acoustic mode.
- Observed the development of the neoclassical electric field, showing poloidal variation.
- Compared simulation results with established neoclassical theory using a Lorentz collision model.
Conclusions:
- The TEMPEST code provides a robust numerical scheme for studying neoclassical transport and electric field dynamics.
- Self-consistent electric field evolution is a key factor in toroidal magnetic fusion devices.
- This work advances the understanding of plasma behavior in fusion reactors.
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