Results 181 to 190 of about 31,111 (232)
Some of the next articles are maybe not open access.
The Topology of Tokamak Orbits*
Nuclear Fusion, 1979Guiding-centre orbits in non-circular axisymmetric tokamak plasmas are studied in the constants of motion (COM) space of (v, ζ, ψm. Here, v is the particle speed, ζ is the pitch angle with respect to the parallel equilibrium current, J||, at the point in the orbit where ψ = ψm, and ψm is the maximum value of the poloidal flux function (increasing from ...
James A. Rome, Y-K.M. Peng
openaire +1 more source
Il Nuovo Cimento B, 1981
The main characteristics of the plasma produced in Thor tokamak discharges are described. The machine performances are outlined and the experimental results relevant to the equilibrium, the stability and the control of the discharge regimes are discussed in detail.
L. Argenti +10 more
openaire +1 more source
The main characteristics of the plasma produced in Thor tokamak discharges are described. The machine performances are outlined and the experimental results relevant to the equilibrium, the stability and the control of the discharge regimes are discussed in detail.
L. Argenti +10 more
openaire +1 more source
Real-time systems in tokamak devices. A case study: The JET tokamak
2010 17th IEEE-NPSS Real Time Conference, 2010The achievement of the required performances during the operation of large fusion experimental reactors, is strictly related to the flexibility and reliability of the real-time infrastructures. It turns out that, in tokamak reactors, the real-time infrastructure has to be designed so as to meet a number of common requirements.
DE TOMMASI, GIANMARIA +10 more
openaire +3 more sources
Density fluctuations in the TORTUR Tokamak
Plasma Physics and Controlled Fusion, 1992Quantitative measurements of the electron density fluctuation spectra, S(omega, k), are presented as a result of collective scattering measurements with 2 mm waves at various radial positions in the equatorial plane of the TORTUR Tokamak plasma. The spectra are determined in a wide frequency range up to 100 MHz and in a k-range between 400 and 4400 m-1
Remkes, G.J. J. +3 more
openaire +1 more source
Equilibrium and stability of tokamaks
International Journal for Numerical Methods in Fluids, 1990AbstractAxisymmetric, ideal MHD configurations with steady flow are computed by the finite‐element method. Rectangular elements with four to nine nodes are used. The equilibria are obtained in flux co‐ordinates by mesh rearrangement. The properties of the linearized motions around an equilibrium state are studied by a normal‐mode analysis.
openaire +2 more sources
Microislands and transport in tokamaks
Journal of Plasma Physics, 2006Kadomtsev proposed a self-generation mechanism of microislands (whose half-width is smaller than the Larmor radius of the ions) based on momentum and energy exchange between the electrostatic field of the islands and the ions of the background tokamak plasma.
openaire +2 more sources
Plasma Equilibrium in Tokamaks
Fusion Science and Technology, 1998We have presented a theoretical description of toroidal equilibrium which involves the solution of the Grad-Shafranov equation and a careful choice of the parameters. The experimental counterpart is the production of accurate equilibrium data by means of all available diagnostics. To get agreement between these two is a long-term iterative process. The
openaire +2 more sources
The structure of magnetic fluctuations in tokamaks: Observations in the TEXT tokamak
Physics of Fluids B: Plasma Physics, 1991The structure of the magnetic fluctuations in a tokamak has been determined from extensive measurements using a variety of probes outside the limiter in TEXT [Plasma Phys. Controlled Nucl. Fusion 27, 1335 (1985)]. The spectrum has been measured to 500 kHz, but little energy is present above 150 kHz.
Y. J. Kim +4 more
openaire +1 more source
Time-resolved spectroscopy in the Rijnhuizen Tokamak Project tokamak
Fusion Engineering and Design, 1997Abstract At the Rijnhuizen 'rokamak Project tokamak spectrometers are used to diagnose the velocity distribution and abundances of impurity ions. Quantities can be measured as a function of time, and the temporal resolution depends on the line emissivity and can be as good as 0.2 ms for the strongest lines.
Box, F.M. A. +3 more
openaire +1 more source
Commercial tokamak reactor potential with advanced tokamak operation
Nuclear Fusion, 1995The attractiveness of future commercial tokamak reactors is sensitive to the attainable plasma performance, notably plasma energy confinement and allowable beta. The impact of varying levels of confinement and beta on the size and cost of the resulting tokamak reactor is systematically quantified.
J.D Galambos +3 more
openaire +1 more source