Systematic Study of Tungsten Impurity Transport in Representative Regimes of Divertor Plasma

S. Yamoto; K. Hoshino; M. Toma; Y. Homma; A. Hatayama; X. Bonnin; D. Coster; R. Schneider

doi:10.1002/ctpp.201410031

Systematic Study of Tungsten Impurity Transport in Representative Regimes of Divertor Plasma

S. Yamoto, K. Hoshino, M. Toma, Y. Homma, A. Hatayama, X. Bonnin, D. Coster, R. Schneider

Department of Applied Physics and Physico-Informatics

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

2 Citations (Scopus)

Abstract

The tungsten impurity transport has been studied by IMPGYRO code for a model tokamak geometry of JT-60U tungsten experiments. The background plasma profiles calculated from SOLPS has been used. The density profiles of tungsten are compared between the low background deuterium density (Case A: nD+ = 2.0 × 10¹⁹ m^-3 at core side boundary) and the high background deuterium density (Case B: nD+ = 3.0 × 10¹⁹ m^-3 at core side boundary). In both cases, flow reversal in the SOL has been observed. The impurity density profile in the SOL is more localized for Case B. These features are possibly explained by the force balance between the thermal force and the friction force.

Original language	English
Pages (from-to)	421-425
Number of pages	5
Journal	Contributions to Plasma Physics
Volume	54
Issue number	4-6
DOIs	https://doi.org/10.1002/ctpp.201410031
Publication status	Published - 2014 Jun

Keywords

Impurity
SOL
Simulation
Tungsten

ASJC Scopus subject areas

Condensed Matter Physics

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10.1002/ctpp.201410031

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title = "Systematic Study of Tungsten Impurity Transport in Representative Regimes of Divertor Plasma",

abstract = "The tungsten impurity transport has been studied by IMPGYRO code for a model tokamak geometry of JT-60U tungsten experiments. The background plasma profiles calculated from SOLPS has been used. The density profiles of tungsten are compared between the low background deuterium density (Case A: nD+ = 2.0 × 1019 m-3 at core side boundary) and the high background deuterium density (Case B: nD+ = 3.0 × 1019 m-3 at core side boundary). In both cases, flow reversal in the SOL has been observed. The impurity density profile in the SOL is more localized for Case B. These features are possibly explained by the force balance between the thermal force and the friction force.",

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AU - Yamoto, S.

AU - Hoshino, K.

AU - Toma, M.

AU - Homma, Y.

AU - Hatayama, A.

AU - Bonnin, X.

AU - Coster, D.

AU - Schneider, R.

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N2 - The tungsten impurity transport has been studied by IMPGYRO code for a model tokamak geometry of JT-60U tungsten experiments. The background plasma profiles calculated from SOLPS has been used. The density profiles of tungsten are compared between the low background deuterium density (Case A: nD+ = 2.0 × 1019 m-3 at core side boundary) and the high background deuterium density (Case B: nD+ = 3.0 × 1019 m-3 at core side boundary). In both cases, flow reversal in the SOL has been observed. The impurity density profile in the SOL is more localized for Case B. These features are possibly explained by the force balance between the thermal force and the friction force.

AB - The tungsten impurity transport has been studied by IMPGYRO code for a model tokamak geometry of JT-60U tungsten experiments. The background plasma profiles calculated from SOLPS has been used. The density profiles of tungsten are compared between the low background deuterium density (Case A: nD+ = 2.0 × 1019 m-3 at core side boundary) and the high background deuterium density (Case B: nD+ = 3.0 × 1019 m-3 at core side boundary). In both cases, flow reversal in the SOL has been observed. The impurity density profile in the SOL is more localized for Case B. These features are possibly explained by the force balance between the thermal force and the friction force.

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