On-Axis Current Drive Experiment Using a Quasi-Optical Electron Cyclotron Heating/Current Drive System on the WT-3 Tokamak.
نویسندگان
چکیده
منابع مشابه
Electron cyclotron current drive efficiency in an axisymmetric tokamak
The neoclassical transport theory is applied to calculate electron cyclotron current drive (ECCD) efficiency in an axisymmetric tokamak in the low-collisionality regime. The tokamak ordering is used to obtain a system of equations that describe the dynamics of the plasma where the nonlinear ponderomotive (PM) force due to high-power RF waves is included. The PM force is produced around an elect...
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Electron cyclotron current drive (ECCD) is an important prospective tool for tailoring the current profile in next-step devices. To fill the remaining gaps between ECCD theory and experiment, especially in the efficiency and localisation of current drive, a better understanding of the physics of suprathermal electrons appears necessary. On TCV, the fast electron population is diagnosed by a mul...
متن کاملCurrent Profile Modification with Electron Cyclotron Current Drive in the Diiiðd Tokamak*
Proof-of-principle experiments on the suitability of electron cyclotron current drive (ECCD) for active current profile control are reported. Experiments with second harmonic extraordinary mode absorption at power levels near 1 MW have demonstrated ability to modify the current profile. This modification is manifested in changes in the internal inductance and the time at which sawteeth appear. ...
متن کاملOff-axis Electron Cyclotron Current Drive for Current Profile Control in Tokamaks*
Steady-state operation in a tokamak requires full noninductive support of the plasma current. Known methods of driving noninductive current are too inefficient to support more than a small fraction of the total plasma current. The route to a steady state tokamak lies through the Advanced Tokamak approach, for which improved confinement and stability support the plasma pressure at reduced plasma...
متن کاملElectron Cyclotron Current Drive by the Ohkawa Method in the Presence of Bootstrap Current
This work was supported by the U.S. Department of Energy, Grant No. DE-FG02-91ER-54109, by the U.S. Department of Energy jointly with the National Spherical Torus Experiment, Grant No. DE-FG02-99ER-54521, and U.S. Department of Energy Cooperative Grant DE-FC02-99ER-54512. Reproduction, translation, publication, use and disposal, in whole or in part, by or for the United States government is per...
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ژورنال
عنوان ژورنال: Journal of Plasma and Fusion Research
سال: 1999
ISSN: 0918-7928
DOI: 10.1585/jspf.75.732