Collisional dynamics of Er in turbulent plasmas in toroidal geometry

S. J. Janhunen; F. Ogando; Jukka A. Heikkinen; T. P. Kiviniemi; S. Leerink

doi:10.1088/0029-5515/47/8/019

Collisional dynamics of Er in turbulent plasmas in toroidal geometry

S. J. Janhunen (Corresponding Author), F. Ogando, Jukka A. Heikkinen, T. P. Kiviniemi, S. Leerink

VTT Technical Research Centre of Finland

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

11 Citations (Scopus)

Abstract

The gyrokinetic full f simulation code ELMFIRE has been used to perform the first global self-consistent computational study of the dynamics of the radial electric field in the presence of turbulence in an experimental toroidal configuration. Parameters have been taken from the FT-2 tokamak. Appreciable differences have been found in comparison with the neo-classical analytic estimate of radial electric field, specially in the outer region with higher level of turbulence. Similar differences have previously been observed in experiments. The analysis included in this work does not support the hypothesis of the neo-classical non-ambipolar transport from finite Larmor-radius effects as a source of discrepancies, but qualitatively supports the theory of eddy viscosity producing those deviations from standard neo-classical theory.

Original language	English
Pages (from-to)	875-879
Journal	Nuclear Fusion
Volume	47
Issue number	8
DOIs	https://doi.org/10.1088/0029-5515/47/8/019
Publication status	Published - 2007
MoE publication type	A1 Journal article-refereed

Keywords

plasma toroidal confinement
plasma
plasma turbulence
Tokamak
fusion energy
fusion reactors

Access to Document

10.1088/0029-5515/47/8/019

Cite this

@article{24cdaf6134554652ada1aeb68e0a2227,

title = "Collisional dynamics of Er in turbulent plasmas in toroidal geometry",

abstract = "The gyrokinetic full f simulation code ELMFIRE has been used to perform the first global self-consistent computational study of the dynamics of the radial electric field in the presence of turbulence in an experimental toroidal configuration. Parameters have been taken from the FT-2 tokamak. Appreciable differences have been found in comparison with the neo-classical analytic estimate of radial electric field, specially in the outer region with higher level of turbulence. Similar differences have previously been observed in experiments. The analysis included in this work does not support the hypothesis of the neo-classical non-ambipolar transport from finite Larmor-radius effects as a source of discrepancies, but qualitatively supports the theory of eddy viscosity producing those deviations from standard neo-classical theory.",

keywords = "plasma toroidal confinement, plasma, plasma turbulence, Tokamak, fusion energy, fusion reactors",

author = "Janhunen, {S. J.} and F. Ogando and Heikkinen, {Jukka A.} and Kiviniemi, {T. P.} and S. Leerink",

year = "2007",

doi = "10.1088/0029-5515/47/8/019",

language = "English",

volume = "47",

pages = "875--879",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "Institute of Physics IOP",

number = "8",

}

TY - JOUR

T1 - Collisional dynamics of Er in turbulent plasmas in toroidal geometry

AU - Janhunen, S. J.

AU - Ogando, F.

AU - Heikkinen, Jukka A.

AU - Kiviniemi, T. P.

AU - Leerink, S.

PY - 2007

Y1 - 2007

N2 - The gyrokinetic full f simulation code ELMFIRE has been used to perform the first global self-consistent computational study of the dynamics of the radial electric field in the presence of turbulence in an experimental toroidal configuration. Parameters have been taken from the FT-2 tokamak. Appreciable differences have been found in comparison with the neo-classical analytic estimate of radial electric field, specially in the outer region with higher level of turbulence. Similar differences have previously been observed in experiments. The analysis included in this work does not support the hypothesis of the neo-classical non-ambipolar transport from finite Larmor-radius effects as a source of discrepancies, but qualitatively supports the theory of eddy viscosity producing those deviations from standard neo-classical theory.

AB - The gyrokinetic full f simulation code ELMFIRE has been used to perform the first global self-consistent computational study of the dynamics of the radial electric field in the presence of turbulence in an experimental toroidal configuration. Parameters have been taken from the FT-2 tokamak. Appreciable differences have been found in comparison with the neo-classical analytic estimate of radial electric field, specially in the outer region with higher level of turbulence. Similar differences have previously been observed in experiments. The analysis included in this work does not support the hypothesis of the neo-classical non-ambipolar transport from finite Larmor-radius effects as a source of discrepancies, but qualitatively supports the theory of eddy viscosity producing those deviations from standard neo-classical theory.

KW - plasma toroidal confinement

KW - plasma

KW - plasma turbulence

KW - Tokamak

KW - fusion energy

KW - fusion reactors

U2 - 10.1088/0029-5515/47/8/019

DO - 10.1088/0029-5515/47/8/019

M3 - Article

SN - 0029-5515

VL - 47

SP - 875

EP - 879

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 8

ER -

Collisional dynamics of Er in turbulent plasmas in toroidal geometry

Abstract

Keywords

Access to Document

Fingerprint

Cite this