Stabilization of tearing modes by modulated electron cyclotron current drive
نویسندگان
چکیده
منابع مشابه
IT/P6-9 Prospects for Stabilization of Neoclassical Tearing Modes by Electron Cyclotron Current Drive in ITER
The system planned for electron cyclotron current drive (ECCD) in ITER can mitigate the deleterious effects of neoclassical tearing modes (NTMs) provided that adequate alignment of the ECCD to the rational surface is maintained or too large a misalignment is corrected on a time scale shorter than the plasma response to “large” islands. Resistive neoclassical tearing modes (NTMs) will be the pri...
متن کاملComplete stabilization of neoclassical tearing modes with lower hybrid current drive on COMPASS-D. RF teams.
Lower hybrid current drive (LHCD) with modest powers ( approximately 10% of the total power input) has been used for the first time to completely stabilize performance limiting neoclassical tearing modes in many COMPASS-D tokamak discharges. The stabilizing effect in these experiments is consistent with a reduction in the free energy available in the current profile to drive tearing modes (i.e....
متن کاملA line-of-sight electron cyclotron emission receiver for electron cyclotron resonance heating feedback control of tearing modes.
An electron cyclotron emission (ECE) receiver inside the electron cyclotron resonance heating (ECRH) transmission line has been brought into operation. The ECE is extracted by placing a quartz plate acting as a Fabry-Perot interferometer under an angle inside the electron cyclotron wave (ECW) beam. ECE measurements are obtained during high power ECRH operation. This demonstrates the successful ...
متن کاملElectron 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...
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...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: AIP Advances
سال: 2019
ISSN: 2158-3226
DOI: 10.1063/1.5080379