Influence of magnetic field ripple on the intrinsic rotation of tokamak plasmas

M. F.F. Nave; T. Johnson; L. G. Eriksson; K. Crombé; C. Giroud; M. L. Mayoral; J. Ongena; A. Salmi; T. Tala; M. Tsalas

doi:10.1103/PhysRevLett.105.105005

Influence of magnetic field ripple on the intrinsic rotation of tokamak plasmas

M. F.F. Nave
, T. Johnson
, L. G. Eriksson
, K. Crombé
, C. Giroud
, M. L. Mayoral
, J. Ongena
, A. Salmi
, T. Tala
, M. Tsalas

Laboratory for Plasma Physics

Instituto Superior Técnico
KTH Royal Institute of Technology
European Commission
Culham Centre for Fusion Energy
Helsinki University of Technology
Association EURATOM-Hellenic Republic

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

37 Citations (Scopus)

Résumé

Using the unique capability of JET to monotonically change the amplitude of the magnetic field ripple, without modifying other relevant equilibrium conditions, the effect of the ripple on the angular rotation frequency of the plasma column was investigated under the conditions of no external momentum input. The ripple amplitude was varied from 0.08% to 1.5% in Ohmic and ion-cyclotron radio-frequency (ICRF) heated plasmas. In both cases the ripple causes counterrotation, indicating a strong torque due to nonambipolar transport of thermal ions and in the case of ICRF also fast ions.

langue originale	Anglais
Numéro d'article	105005
journal	Physical Review Letters
Volume	105
Numéro de publication	10
Les DOIs	https://doi.org/10.1103/PhysRevLett.105.105005
état	Publié - 3 sept. 2010

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10.1103/PhysRevLett.105.105005

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title = "Influence of magnetic field ripple on the intrinsic rotation of tokamak plasmas",

abstract = "Using the unique capability of JET to monotonically change the amplitude of the magnetic field ripple, without modifying other relevant equilibrium conditions, the effect of the ripple on the angular rotation frequency of the plasma column was investigated under the conditions of no external momentum input. The ripple amplitude was varied from 0.08\% to 1.5\% in Ohmic and ion-cyclotron radio-frequency (ICRF) heated plasmas. In both cases the ripple causes counterrotation, indicating a strong torque due to nonambipolar transport of thermal ions and in the case of ICRF also fast ions.",

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AU - Nave, M. F.F.

AU - Johnson, T.

AU - Eriksson, L. G.

AU - Crombé, K.

AU - Giroud, C.

AU - Mayoral, M. L.

AU - Ongena, J.

AU - Salmi, A.

AU - Tala, T.

AU - Tsalas, M.

PY - 2010/9/3

Y1 - 2010/9/3

N2 - Using the unique capability of JET to monotonically change the amplitude of the magnetic field ripple, without modifying other relevant equilibrium conditions, the effect of the ripple on the angular rotation frequency of the plasma column was investigated under the conditions of no external momentum input. The ripple amplitude was varied from 0.08% to 1.5% in Ohmic and ion-cyclotron radio-frequency (ICRF) heated plasmas. In both cases the ripple causes counterrotation, indicating a strong torque due to nonambipolar transport of thermal ions and in the case of ICRF also fast ions.

AB - Using the unique capability of JET to monotonically change the amplitude of the magnetic field ripple, without modifying other relevant equilibrium conditions, the effect of the ripple on the angular rotation frequency of the plasma column was investigated under the conditions of no external momentum input. The ripple amplitude was varied from 0.08% to 1.5% in Ohmic and ion-cyclotron radio-frequency (ICRF) heated plasmas. In both cases the ripple causes counterrotation, indicating a strong torque due to nonambipolar transport of thermal ions and in the case of ICRF also fast ions.

UR - https://www.scopus.com/pages/publications/77956325110

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DO - 10.1103/PhysRevLett.105.105005

M3 - Article

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SN - 0031-9007

VL - 105

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

M1 - 105005

ER -

Influence of magnetic field ripple on the intrinsic rotation of tokamak plasmas

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