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

Abstract

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.

Authors:
 [1];  [2];  [3];  [1];  [1];  [1];  [1];  [2]
  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)
Publication Date:
OSTI Identifier:
20216696
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 485; Journal Issue: 1; Other Information: PBD: 20 Sep 1999; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ECR HEATING; CURRENT-DRIVE HEATING; MAGNETIC FIELD CONFIGURATIONS; PLASMA INSTABILITY; PLASMA SIMULATION; CURRENT DENSITY

Citation Formats

Prater, R., Bernabei, S., Harvey, R. W., La Haye, R. J., Lin-Liu, Y. R., Lohr, J., Perkins, F. W., and Wong, K.-L. Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive. United States: N. p., 1999. Web. doi:10.1063/1.59676.
Prater, R., Bernabei, S., Harvey, R. W., La Haye, R. J., Lin-Liu, Y. R., Lohr, J., Perkins, F. W., & Wong, K.-L. Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive. United States. doi:10.1063/1.59676.
Prater, R., Bernabei, S., Harvey, R. W., La Haye, R. J., Lin-Liu, Y. R., Lohr, J., Perkins, F. W., and Wong, K.-L. Mon . "Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive". United States. doi:10.1063/1.59676.
@article{osti_20216696,
title = {Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive},
author = {Prater, R. and Bernabei, S. and Harvey, R. W. and La Haye, R. J. and Lin-Liu, Y. R. and Lohr, J. and Perkins, F. W. and Wong, K.-L.},
abstractNote = {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.},
doi = {10.1063/1.59676},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 485,
place = {United States},
year = {1999},
month = {9}
}