Results 1 to 10 of about 2,329 (224)
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
Exploring novel compact quasi-axisymmetric stellarators [PDF]
Physical Review ResearchThe new class of compact quasi-axisymmetric stellarators with a wide range of field periods offers the unique potential to combine the advantages of the two leading magnetic confinement fusion devices, tokamaks and stellarators.
T. M. Schuett, S. A. Henneberg
doaj +3 more sources
A novel scheme for error field correction in permanent magnet stellarators
Nuclear Fusion, 2023 Stellarators offer a promising path towards fusion reactors, but their design and construction are complicated by stringent tolerance requirements on highly complex 3D coils. A potential way to simplify the engineering requirements for stellarators is to
A. Rutkowski +4 more
doaj +2 more sources
Geometry effects on zonal flow dynamics and turbulent transport in optimized stellarators
Nuclear FusionGlobal gyrokinetic simulations find a strong suppression of ion temperature gradient (ITG) turbulence by zonal flows in stellarators optimized for neoclassical transport.
Haotian Chen +3 more
doaj +2 more sources
First-principles based plasma profile predictions for optimized stellarators
Nuclear Fusion, 2023 In the present Letter, first-of-its-kind computer simulations predicting plasma profiles for modern optimized stellarators—while self-consistently retaining neoclassical transport, turbulent transport with 3D effects, and external physical sources—are ...
A. Bañón Navarro +8 more
doaj +1 more source
Greedy permanent magnet optimization
Nuclear Fusion, 2023 A number of scientific fields rely on placing permanent magnets in order to produce a desired magnetic field. We have shown in recent work that the placement process can be formulated as sparse regression.
Alan A. Kaptanoglu +2 more
doaj +1 more source
Nonlinear growth of zonal flows by secondary instability in general magnetic geometry
New Journal of Physics, 2017 We present a theory of the nonlinear growth of zonal flows in magnetized plasma turbulence, by the mechanism of secondary instability. The theory is derived for general magnetic geometry, and is thus applicable to both tokamaks and stellarators.
G G Plunk, A Bañón Navarro
doaj +1 more source
Nuclear Fusion, 2023 Pellet injection is the most promising technique to achieve efficient plasma core fuelling, key for attaining stationary scenarios in large magnetic confinement fusion devices.
N. Panadero +10 more
doaj +1 more source
Nuclear Fusion, 2023 Combined high-fusion performance and long-pulse operation is one of the key integration challenges for fusion energy development in magnetic devices. Addressing these challenges requires an integrated vision of physics and engineering aspects with the ...
X. Litaudon +27 more
doaj +1 more source
Prevention of core particle depletion in stellarators by turbulence
Physical Review Research, 2023 In reactor-relevant plasmas, neoclassical transport drives an outward particle flux in the core of large stellarators and predicts strongly hollow density profiles. However, this theoretical prediction is contradicted by experiments.
H. Thienpondt +12 more
doaj +1 more source