Results 1 to 10 of about 48 (42)
Statistical Analysis of Plasma Dynamics in Gyrokinetic Simulations of Stellarator Turbulence [PDF]
Entropy, 2023 A geometrical method for assessing stochastic processes in plasma turbulence is investigated in this study. The thermodynamic length methodology allows using a Riemannian metric on the phase space; thus, distances between thermodynamic states can be ...
Aristeides D. Papadopoulos +4 more
doaj +2 more sources
A promising approach to steady-state fusion: High-temperature superconducting strong-field stellarator with precise omnigenity [PDF]
The InnovationThe stellarator has inherent advantages over the tokamak in achieving steady-state operation, especially due to its absence of disruptions and lack of need for current drive and the associated recirculating power.
Guosheng Xu +3 more
doaj +2 more sources
A quasi-isodynamic configuration with good confinement of fast ions at low plasma β
Nuclear Fusion, 2023 A new quasi-isodynamic (QI) stellarator configuration optimized for the confinement of energetic ions at low plasma β is obtained. The numerical optimization is carried out using the STELLOPT suite of codes.
E. Sánchez +3 more
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Reduced electrostatic turbulence in the quasi-isodynamic stellarator configuration CIEMAT-QI4
Nuclear FusionCIEMAT-QI4 is a quasi-isodynamic stellarator configuration that simultaneously features very good fast-ion confinement in a broad range of β values, low neoclassical transport and bootstrap current, and ideal magnetohydrodynamic stability up to $\beta ...
J.M. García-Regaña +5 more
doaj +2 more sources
Quasi-Isodynamic Stellarators with Low Turbulence as Fusion Reactor Candidates
PRX EnergyThe stellarator is a type of fusion energy device that—if properly designed—could provide clean, safe, and abundant energy to the grid. To generate this energy, a stellarator must keep a hot mixture of charged particles (known as a plasma) sufficiently ...
Alan G. Goodman +9 more
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Nuclear FusionStellarator magnetic fields that are perfectly optimized for neoclassical transport (with levels of radial neoclassical transport comparable to tokamaks) are called omnigenous.
F.J. Escoto +3 more
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AIP Advances, 2022 In future fusion reactors, the confinement of α-particles is a crucial issue. The perfect omnigenity may be difficult to achieve in the quasi-isodynamic and quasi-symmetric stellarators when a multi-objective optimization is considered.
Yichao Zhang +12 more
doaj +1 more source
Robust stellarator optimization via flat mirror magnetic fields
Nuclear Fusion, 2023 Stellarator magnetic configurations need to be optimized in order to meet all the required properties of a fusion reactor. In this work, it is shown that a flat-mirror quasi-isodynamic (QI) configuration (i.e.
J.L. Velasco +3 more
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The Magnetic Beneficiation of Coal
Physical Separation in Science and Engineering, Volume 2, Issue 1, Page 1-48, 1985., 1985 The magnetic demineralization of coal can produce a fuel containing lower leveIs of sulphur and ash forming minerals. The ability of the magnetic separation technique to process material over a wide range of particle sizes (I‐1000 µm) and to operate on either liquid or gaseous feed enables a number of possible coal processing applications.
S. E. Male
wiley +1 more source
Trapped electron mode in a quasi-isodynamic stellarator
Nuclear FusionGlobal gyrokinetic simulations find a strongly unstable trapped electron mode excited by a density gradient in a quasi-isodynamic stellarator. The eigenmode structure localizes on the inner side of the torus with an unfavorable magnetic curvature and ...
Javier H. Nicolau +4 more
doaj +1 more source