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

X. Garbet (Corresponding Author), Yuri Baranov, G. Bateman, S. Benkadda, P. Beyer, Tuomas Tala, JET-EFDA collaborators

Research output: Contribution to journalArticleScientificpeer-review

28 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 languageEnglish
Pages (from-to)974-981
JournalNuclear Fusion
Volume43
Issue number9
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

turbulence
physics
simulation
profiles
electron energy
electrostatics
shear
impurities
fluids
shift
ions

Keywords

  • JET
  • plasma
  • Tokamak
  • fusion energy
  • fusion reactors
  • internal transport barriers

Cite this

Garbet, X., Baranov, Y., Bateman, G., Benkadda, S., Beyer, P., Tala, T., & JET-EFDA collaborators (2003). Micro-stability and transport modelling of internal transport barriers on JET. Nuclear Fusion, 43(9), 974-981. https://doi.org/10.1088/0029-5515/43/9/323
Garbet, X. ; Baranov, Yuri ; Bateman, G. ; Benkadda, S. ; Beyer, P. ; Tala, Tuomas ; JET-EFDA collaborators. / Micro-stability and transport modelling of internal transport barriers on JET. In: Nuclear Fusion. 2003 ; Vol. 43, No. 9. pp. 974-981.
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Garbet, X, Baranov, Y, Bateman, G, Benkadda, S, Beyer, P, Tala, T & JET-EFDA collaborators 2003, 'Micro-stability and transport modelling of internal transport barriers on JET', Nuclear Fusion, vol. 43, no. 9, pp. 974-981. https://doi.org/10.1088/0029-5515/43/9/323

Micro-stability and transport modelling of internal transport barriers on JET. / Garbet, X. (Corresponding Author); Baranov, Yuri; Bateman, G.; Benkadda, S. ; Beyer, P. ; Tala, Tuomas; JET-EFDA collaborators.

In: Nuclear Fusion, Vol. 43, No. 9, 2003, p. 974-981.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

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 collaborators

PY - 2003

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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

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JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

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