Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive

Journal Article · Mon Sep 20 00:00:00 EDT 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.59676· OSTI ID:20216696

Prater, R ^[1]; Bernabei, S ^[2]; Harvey, R W ^[3]; La Haye, R J ^[1]; Lin-Liu, Y R ^[1]; Lohr, J ^[1]; Perkins, F W ^[1]; Wong, K -L ^[2]

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1. General Atomics, P.O. Box 85608, San Diego, California 92186 (United States)
2. Princeton Plasma Physics Laboratory, Princeton, New Jersey (United States)
3. CompX, Del Mar, California (United States)

Neoclassical tearing modes are found to limit the achievable beta in many high performance discharges in DIII-D. Electron cyclotron current drive within the magnetic islands formed as the tearing mode grows has been proposed as a means of stabilizing these modes or reducing their amplitude, thereby increasing the beta limit by a factor around 1.5. Some experimental success has been obtained previously on Asdex-U. Here we examine the parameter range in DIII-D in which this effect can best be studied. (c) 1999 American Institute of Physics.

• OSTI ID: 20216696
• Journal Information: AIP Conference Proceedings, Vol. 485, Issue 1; Other Information: PBD: 20 Sep 1999; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ECR HEATING
CURRENT-DRIVE HEATING
MAGNETIC FIELD CONFIGURATIONS
PLASMA INSTABILITY
PLASMA SIMULATION
CURRENT DENSITY