Micro-stability and transport modelling of internal transport barriers on JET

X. Garbet; Yuri Baranov; G. Bateman; S.  Benkadda; P.  Beyer; Tuomas Tala; JET-EFDA contributors

doi:10.1088/0029-5515/43/9/323

Micro-stability and transport modelling of internal transport barriers on JET

X. Garbet^*, Yuri Baranov, G. Bateman, S. Benkadda, P. Beyer, Tuomas Tala, JET-EFDA contributors

^*Corresponding author for this work

BA4511 Fusion energy

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

29 Citations (Scopus)

Abstract

The physics of internal transport barrier (ITB) formation in JET has been investigated using micro-stability analysis, profile modelling and turbulence simulations. The calculation of linear growth rates shows that magnetic shear plays a crucial role in the formation of the ITB. Shafranov shift, ratio of the ion to electron temperature, and impurity content further improve the stability. This picture is consistent with profile modelling and global fluid simulations of electrostatic drift waves. Turbulence simulations also show that rational q values may play a special role in triggering an ITB. The same physics also explains how double internal barriers can be formed.

Original language	English
Pages (from-to)	974-981
Journal	Nuclear Fusion
Volume	43
Issue number	9
DOIs	https://doi.org/10.1088/0029-5515/43/9/323
Publication status	Published - 2003
MoE publication type	A1 Journal article-refereed

Keywords

JET
plasma
Tokamak
fusion energy
fusion reactors
internal transport barriers

UN SDGs

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

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10.1088/0029-5515/43/9/323

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title = "Micro-stability and transport modelling of internal transport barriers on JET",

abstract = "The physics of internal transport barrier (ITB) formation in JET has been investigated using micro-stability analysis, profile modelling and turbulence simulations. The calculation of linear growth rates shows that magnetic shear plays a crucial role in the formation of the ITB. Shafranov shift, ratio of the ion to electron temperature, and impurity content further improve the stability. This picture is consistent with profile modelling and global fluid simulations of electrostatic drift waves. Turbulence simulations also show that rational q values may play a special role in triggering an ITB. The same physics also explains how double internal barriers can be formed.",

keywords = "JET, plasma, Tokamak, fusion energy, fusion reactors, internal transport barriers",

author = "X. Garbet and Yuri Baranov and G. Bateman and S. Benkadda and P. Beyer and Tuomas Tala and \{JET-EFDA contributors\}",

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language = "English",

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T1 - Micro-stability and transport modelling of internal transport barriers on JET

AU - Garbet, X.

AU - Baranov, Yuri

AU - Bateman, G.

AU - Benkadda, S.

AU - Beyer, P.

AU - Tala, Tuomas

AU - JET-EFDA contributors

PY - 2003

Y1 - 2003

N2 - The physics of internal transport barrier (ITB) formation in JET has been investigated using micro-stability analysis, profile modelling and turbulence simulations. The calculation of linear growth rates shows that magnetic shear plays a crucial role in the formation of the ITB. Shafranov shift, ratio of the ion to electron temperature, and impurity content further improve the stability. This picture is consistent with profile modelling and global fluid simulations of electrostatic drift waves. Turbulence simulations also show that rational q values may play a special role in triggering an ITB. The same physics also explains how double internal barriers can be formed.

AB - The physics of internal transport barrier (ITB) formation in JET has been investigated using micro-stability analysis, profile modelling and turbulence simulations. The calculation of linear growth rates shows that magnetic shear plays a crucial role in the formation of the ITB. Shafranov shift, ratio of the ion to electron temperature, and impurity content further improve the stability. This picture is consistent with profile modelling and global fluid simulations of electrostatic drift waves. Turbulence simulations also show that rational q values may play a special role in triggering an ITB. The same physics also explains how double internal barriers can be formed.

KW - JET

KW - plasma

KW - Tokamak

KW - fusion energy

KW - fusion reactors

KW - internal transport barriers

U2 - 10.1088/0029-5515/43/9/323

DO - 10.1088/0029-5515/43/9/323

M3 - Article

SN - 0029-5515

VL - 43

SP - 974

EP - 981

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 9

ER -

Micro-stability and transport modelling of internal transport barriers on JET

Abstract

Keywords

UN SDGs

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