Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive
Conference
·
OSTI ID:354990
- General Atomics, San Diego, CA (United States)
- Princeton Plasma Physics Lab., NJ (United States)
- CompX, Del Mar, CA (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 the authors examine the parameter range in DIII-C in which this effect can best be studied.
- Research Organization:
- General Atomics, San Diego, CA (United States); Princeton Plasma Physics Lab., NJ (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- AC03-99ER54463; AC02-76CH03073
- OSTI ID:
- 354990
- Report Number(s):
- GA-A23098; CONF-990411-; ON: DE99003186; TRN: AHC29924%%194
- Resource Relation:
- Conference: 13. topical conference on applications of radio frequency power to plasmas, Annapolis, MD (United States), 12-14 Apr 1999; Other Information: PBD: May 1999
- Country of Publication:
- United States
- Language:
- English
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Neoclassical tearing modes in DIII-D and calculations of the stabilizing effects of localized electron cyclotron current drive
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INCREASED STABLE BETA IN DIII-D BY SUPPRESSION OF A NEOCLASSICAL TEARING MODE USING ELECTRON CYCLOTRON CURRENT DRIVE AND ACTIVE FEEDBACK
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SUPPRESSION OF TEARING MODES BY MEANS OF LOCALIZED ELECTRON CYCLOTRON CURRENT DRIVE IN THE DIII-D TOKAMAK
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