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

Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary

Creators

  • 1. General Atomics, San Diego, California (United States)
  • 2. University of California San Diego, La Jolla, California (United States)
  • 3. CEA Cadarache Euratom Association, Cadarache (France)
  • 4. Sandia National Laboratories, Albuquerque, New Mexico (United States)
  • 5. University of California, Los Angeles, California (United States)
  • 6. Lawrence Livermore National Laboratory, Livermore, California (United States)
  • 7. FZ-Juelich Euratom Association, Juelich (Germany)
  • 8. Australian National University, Canberra (Australia)

Description

A stochastic magnetic boundary, produced by an applied edge resonant magnetic perturbation, is used to suppress most large edge-localized modes (ELMs) in high confinement (H-mode) plasmas. The resulting H mode displays rapid, small oscillations with a bursty character modulated by a coherent 130 Hz envelope. The H mode transport barrier and core confinement are unaffected by the stochastic boundary, despite a threefold drop in the toroidal rotation. These results demonstrate that stochastic boundaries are compatible with H modes and may be attractive for ELM control in next-step fusion tokamaks

Additional details

Identifiers

DOI
10.1103/PhysRevLett.92.235003;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
92
Journal Issue
23
Journal Page Range
p. 235003-235003.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36019185
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
BOUNDARY LAYERS; CHARGED-PARTICLE TRANSPORT; CONTROL; DOUBLET-3 DEVICE; EDGE LOCALIZED MODES; FLUCTUATIONS; H-MODE PLASMA CONFINEMENT; OSCILLATIONS; PLASMA; ROTATION
Descriptors DEC
CLOSED PLASMA DEVICES; CONFINEMENT; INSTABILITY; LAYERS; MAGNETIC CONFINEMENT; MOTION; PLASMA CONFINEMENT; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES; RADIATION TRANSPORT; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; VARIATIONS

Optional Information

Notes
(c) 2004 The American Physical Society