Characteristics of transport barrier generation from gyrokinetic plasma Simulation in a Tokamak

Author

Ekholm, T.H. ; Janhunen, S. ; Heikkinen, J.A. ; Henriksson, S.V. ; Kiviniemi, T.P.

Author_Institution

Dept. of Eng. Phys. & Math., Helsinki Univ. of Technol., Finland

Volume

33

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

442

Lastpage

443

Abstract

An advanced full f gyrokinetic three-dimensional (3-D) plasma simulation code has been developed, thus making it possible to treat steep plasma gradients, wide particle orbit effects, and rapid dynamic changes in long simulations. The study of a small tokamak plasma heated by lower hybrid waves shows a generation of internal transport barrier which is detected as a simultaneous collapse of heat and particle diffusion coefficients as well as large scale structures in fluctuations inside the barrier.

Keywords

Tokamak devices; plasma fluctuations; plasma hybrid waves; plasma kinetic theory; plasma simulation; plasma toroidal confinement; plasma transport processes; barrier fluctuations; gyrokinetic three-dimensional plasma simulation code; heat diffusion coefficient; internal transport barrier; large scale structures; lower hybrid waves; particle diffusion coefficient; small tokamak plasma; steep plasma gradients; transport barrier generation; wide particle orbit effects; Character generation; Electrons; Magnetic confinement; Plasma confinement; Plasma density; Plasma simulation; Plasma temperature; Plasma transport processes; Plasma waves; Tokamaks; Magnetic confinement; scientific visualisation; transport; turbulence;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2005.845070

Filename

1420517