Published June 11, 2004 | Version v1
Journal article Metadata-only

Destabilization of fast-ion-induced long sawteeth by localized current drive in the JET tokamak

Creators

  • 1. Association EURATOM-CEA, CEA/DSM/DRFC, CEA-Cadarache, F-13108 St. Paul lez Durance (France)
  • 2. Max-Planck IPP-EURATOM Assoziation, Garching (Germany)
  • 3. EURATOM Confederation Suisse, CRPP-EPFL, Lausanne (Switzerland)
  • 4. Association Euratom-Tekes, Helsinki University of Technology (Finland)
  • 5. UKAEA/Euratom Fusion Association, Culham Science Centre, Abingdon (United Kingdom)
  • 6. Association EURATOM-FOM, FOM-Rijnhuizen, TEC, Nieuwegein (NL)
  • 7. Euratom-VR Association, Stockholm (Sweden)
  • 8. Department EESA, Gent University, Gent (Belgium)

Description

In a tokamak fusion reactor the energetic alpha particles will transiently stabilize the magnetohydrodynamic activity causing sawtooth oscillations. The crash events terminating long sawtooth free periods can provide seed islands for neoclassical tearing modes [O. Sauter et al., Phys. Rev. Lett. 88, 105001 (2002)]. To shorten the sawtooth periods localized current drive near the q=1 surface is a possibility. This Letter provides the first experimental evidence for the effectiveness of this method in the different physics regime associated with fast-ion-induced long sawteeth on the JET tokamak

Additional details

Identifiers

DOI
10.1103/PhysRevLett.92.235004;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
92
Journal Issue
23
Journal Page Range
p. 235004-235004.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36019186
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
ALPHA PARTICLES; JET TOKAMAK; MAGNETIC ISLANDS; MAGNETOHYDRODYNAMICS; NEOCLASSICAL TRANSPORT THEORY; PLASMA; PLASMA CONFINEMENT; RF SYSTEMS; SAWTOOTH OSCILLATIONS; SURFACES; TEARING INSTABILITY; THERMONUCLEAR REACTORS
Descriptors DEC
CHARGED PARTICLES; CHARGED-PARTICLE TRANSPORT THEORY; CLOSED PLASMA DEVICES; CONFINEMENT; FLUID MECHANICS; HYDRODYNAMICS; INSTABILITY; IONIZING RADIATIONS; MAGNETIC FIELD CONFIGURATIONS; MECHANICS; OSCILLATIONS; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; RADIATIONS; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; TRANSPORT THEORY

Optional Information

Notes
(c) 2004 The American Physical Society