Assessment of Electron-Cyclotron-Current-Drive-Assisted Operation in DEMO
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...
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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The ability to non-inductively drive a large fraction of the toroidal plasma current in magnetically confined plasmas is an essential requirement for steady state fusion reactors such as DEMO. Besides neutral beam injection (NBI), electron-cyclotron resonance heating (ECRH) and lower hybrid wave heating (LH), ion-cyclotron resonance heating (ICRH) is a promising candidate to drive current, in p...
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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...
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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. ...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2012
ISSN: 2100-014X
DOI: 10.1051/epjconf/20123201005