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

Conference · Sat May 01 00:00:00 EDT 1999

OSTI ID:354990

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

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1. General Atomics, San Diego, CA (United States)
2. Princeton Plasma Physics Lab., NJ (United States)
3. 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

Related Subjects

70 PLASMA PHYSICS AND FUSION
DOUBLET-3 DEVICE
TEARING INSTABILITY
STABILIZATION
NEOCLASSICAL TRANSPORT THEORY
MAGNETIC ISLANDS
ECR HEATING
NON-INDUCTIVE CURRENT DRIVE
ELECTRIC CURRENTS