Electron-cyclotron-current-drive experiments in the DIII-D tokamak

Journal Article · Mon Jun 15 04:00:00 EDT 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.8783· OSTI ID:7105201

James, R A ^[1]; Giruzzi, G; de Gentile, B; Rodriguez, L ^[2]; Harvey, R; Lohr, J; Luce, T C; Matsuda, K; Moeller, C P; Prater, R; Snider, R ^[3]; Fyakhretdinov, A; Gorelov, Y; Trukhin, V ^[4]; Janz, S ^[5]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
2. Association Euratom, Commissariat a l'Energie Atomique, Tore Supra, Cadarache (France)
3. General Atomics, San Diego, California 92186-9784 (United States)
4. Kurchatov Institute, Moscow (USSR)
5. 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), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:12; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310* -- Plasma Confinement-- (1992-)
700350 -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
CLOSED PLASMA DEVICES
CONFINEMENT TIME
DIFFERENTIAL EQUATIONS
ECR HEATING
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
ELECTRON TEMPERATURE
EQUATIONS
FOKKER-PLANCK EQUATION
HEATING
HIGH-FREQUENCY HEATING
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA HEATING
RADIATIONS
RADIOWAVE RADIATION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES