Results 61 to 70 of about 161 (152)

MONKES: a fast neoclassical code for the evaluation of monoenergetic transport coefficients in stellarator plasmas

open access: yesNuclear Fusion
MONKES is a new neoclassical code for the evaluation of monoenergetic transport coefficients in stellarators. By means of a convergence study and benchmarks with other codes, it is shown that MONKES is accurate and efficient.
F.J. Escoto   +4 more
doaj   +1 more source

Overview of Wendelstein 7-X high-performance operation

open access: yesNuclear Fusion
The Wendelstein 7-X (W7-X) stellarator has completed two consecutive experimental campaigns OP 2.2 (Sep.-Dec. 2024) and OP 2.3 (Feb.-May 2025) under a new operational strategy enabling more than one year of uninterrupted device availability.
O. Grulke   +518 more
doaj   +1 more source

Precise stellarator quasi-symmetry can be achieved with electromagnetic coils. [PDF]

open access: yesProc Natl Acad Sci U S A, 2022
Wechsung F   +4 more
europepmc   +1 more source

Demonstration of reduced neoclassical energy transport in Wendelstein 7-X. [PDF]

open access: yesNature, 2021
Beidler CD   +39 more
europepmc   +1 more source

Evaluation of neoclassical transport in nearly quasi-isodynamic stellarator magnetic fields using MONKES

open access: yesNuclear Fusion
Stellarator 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
doaj   +1 more source

Direct optimization of neoclassical ion transport in stellarator reactors

open access: yesNuclear Fusion
We directly optimize stellarator neoclassical ion transport while holding neoclassical electron transport at a moderate level, creating a scenario favorable for impurity expulsion and retaining good ion confinement.
B.F. Lee   +4 more
doaj   +1 more source

Reduction of neoclassical bulk-ion transport to avoid helium-ash retention in stellarator reactors

open access: yesNuclear Fusion
The reduction of neoclassical energy transport in stellarators has traditionally focussed on optimizing magnetic fields for small values of ‘effective helical ripple’ — $\epsilon_\mathrm{eff}$ , the geometric factor associated with electron $1/\nu ...
C.D. Beidler   +5 more
doaj   +1 more source

Forced flow cryogenic cooling in fusion devices: A review. [PDF]

open access: yesHeliyon, 2021
Vaghela H, Lakhera VJ, Sarkar B.
europepmc   +1 more source

Optimizing stellarators with hidden symmetry

open access: yes
Stellarators confine fusion plasmas using three-dimensional magnetic fields composed of nested toroidal magnetic surfaces. In generic stellarators, trapped particles can drift across these surfaces and degrade plasma confinement. Certain topological properties of the magnetic field strength can suppress these drifts.
Liu, Hengqian   +10 more
openaire   +2 more sources

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