Electron-cyclotron-current-drive experiments in the DIII-D tokamak
- Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- Association Euratom, Commissariat a l'Energie Atomique, Tore Supra, Cadarache (France)
- General Atomics, San Diego, California 92186-9784 (United States)
- Kurchatov Institute, Moscow (USSR)
- University of Maryland, College Park, Maryland 20742 (United States)
Electron-cyclotron-current-drive (ECCD) experiments performed in the DIII-D tokamak have produced rf-driven currents of up to 100 kA. The experimental results, which exceed predictions using linear theory, are enhanced by the presence of a residual, toroidal dc electric field. These ECCD experiments are performed with plasma conditions sufficient to result in strong localized deposition of the rf power and good confinement of the rf-generated current carriers. These improved conditions permit a test of theory under reactor relevant conditions. Theoretical predictions obtained using a Fokker-Planck code are in good agreement with the experimental results when effects due to electron trapping and the residual dc electric field are included.
- DOE Contract Number:
- AC03-89ER51114; W-7405-ENG-48
- OSTI ID:
- 7105201
- Journal Information:
- Physical Review A. General Physics; (United States), Vol. 45:12; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TOKAMAK DEVICES
ECR HEATING
CONFINEMENT TIME
ELECTRON DENSITY
ELECTRON TEMPERATURE
FOKKER-PLANCK EQUATION
RADIOWAVE RADIATION
CLOSED PLASMA DEVICES
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC RADIATION
EQUATIONS
HEATING
HIGH-FREQUENCY HEATING
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA HEATING
RADIATIONS
THERMONUCLEAR DEVICES
700310* - Plasma Confinement- (1992-)
700350 - Plasma Production
Heating
Current Drive
& Interactions- (1992-)