Influence of Magnetic Field Ripple on the Intrinsic Rotation of Tokamak Plasmas

Journal Article · Fri Sep 03 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.105005· OSTI ID:21470925

Nave, M F. F. ^[1]; Johnson, T ^[2]; Eriksson, L -G ^[3]; Crombe, K; Ongena, J ^[4]; Giroud, C; Mayoral, M -L ^[5]; Salmi, A; Tala, T ^[6]; Tsalas, M ^[7]

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1. Associacao EURATOM/IST, Instituto de Plasmas e Fusao Nuclear-Laboratorio Associado, Lisbon (Portugal)
2. Euratom-VR Association, EES, KTH, Stockholm (Sweden)
3. European Commission, Research Directorate General, B-1049 Brussels (Belgium)
4. Association EURATOM-Belgian State, Brussels (Belgium)
5. Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon (United Kingdom)
6. Association Euratom-Tekes, VTT, P.O. Box 1000, FI-02044 VTT (Finland)
7. Association EURATOM-Hellenic Republic, Attica (Greece)

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.

• OSTI ID: 21470925
• Journal Information: Physical Review Letters, Vol. 105, Issue 10; Other Information: DOI: 10.1103/PhysRevLett.105.105005; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ICR HEATING
ION CYCLOTRON-RESONANCE
IONS
JET TOKAMAK
JOULE HEATING
MAGNETIC FIELD RIPPLES
PLASMA
RADIOWAVE RADIATION
ROTATION
TORQUE
CHARGED PARTICLES
CLOSED PLASMA DEVICES
CYCLOTRON RESONANCE
ELECTRIC HEATING
ELECTROMAGNETIC RADIATION
HEATING
HIGH-FREQUENCY HEATING
MAGNETIC FIELD CONFIGURATIONS
MOTION
PLASMA HEATING
RADIATIONS
RESONANCE
THERMONUCLEAR DEVICES
TOKAMAK DEVICES