Global gyrokinetic simulations of electromagnetic turbulence in stellarator plasmas
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377823000363
Abstract: Global electromagnetic turbulence is simulated in stellarator geometry using the gyrokinetic particle-in-cell code EUTERPE. The evolution of the turbulent electromagnetic field and the plasma profiles is considered at different values of the plasma beta and… read more here.
Keywords: gyrokinetic simulations; electromagnetic turbulence; simulations electromagnetic; stellarator ... See more keywords
High-β equilibrium and ballooning stability of the low aspect ratio CNT stellarator
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Plasmas"
DOI: 10.1063/1.4979284
Abstract: The existence and ballooning-stability of low aspect ratio stellarator equilibria is predicted for the Columbia Neutral Torus (CNT) with the aid of 3D numerical tools. In addition to having a low aspect ratio, CNT is… read more here.
Keywords: aspect ratio; stellarator; ballooning stability; cnt ... See more keywords
Nonlinear global gyrokinetic delta-f turbulence simulations in a quasi-axisymmetric stellarator
Sign Up to like & getrecommendations! Published in 2020 at "Physics of Plasmas"
DOI: 10.1063/1.5140232
Abstract: We use the global gyrokinetic stellarator code XGC-S to look at turbulence physics in geometry of the proposed quasi-axisymmetric stellarator, QUASAR. The XGC-S code is first verified for nonlinear simulations of ion temperature gradient-driven turbulence… read more here.
Keywords: axisymmetric stellarator; stellarator; turbulence; physics ... See more keywords
Global gyrokinetic simulation of neoclassical ambipolar electric field and its effects on microturbulence in W7-X stellarator
Sign Up to like & getrecommendations! Published in 2021 at "Physics of Plasmas"
DOI: 10.1063/5.0047291
Abstract: Global neoclassical simulations of a model equilibrium of the W7-X stellarator find an ambipolar electric field with either an ion root or an electron root solution depending on the temperature ratio between electrons and ions.… read more here.
Keywords: field; stellarator; ambipolar electric; ion ... See more keywords
Experimental studies and simulations of hydrogen pellet ablation in the stellarator TJ-II
Sign Up to like & getrecommendations! Published in 2018 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/aa9f8a
Abstract: Plasma core fuelling is a key issue for the development of steady-state scenarios in large magnetically-confined fusion devices, in particular for helical-type machines. At present, cryogenic pellet injection is the most promising technique for efficient… read more here.
Keywords: fuelling efficiency; pellet ablation; ablation; stellarator ... See more keywords
Heat pulse propagation and anomalous electron heat transport measurements on the optimized stellarator W7-X
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/abea55
Abstract: The optimized stellarator Wendelstein 7-X (W7-X) is designed to have an approximately quasi-isodynamic magnetic configuration with reduced neoclassical transport in comparison to a classical stellarator, and turbulent transport is expected to be a significant source… read more here.
Keywords: heat transport; stellarator; transport; heat ... See more keywords
The interpretation of magnetic activity associated with pellet injections into plasmas created in the stellarator TJ-II
Sign Up to like & getrecommendations! Published in 2021 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ac04f6
Abstract: Pellet injection into magnetic confinement plasma is widely employed for plasma fuelling and impurity transport studies. While post-injection effects include changes in density and temperature, several short-lived effects have been identified during and immediately after… read more here.
Keywords: plasma; magnetic activity; stellarator; pellet ... See more keywords
Gyrokinetic electrostatic turbulence close to marginality in the Wendelstein 7-X stellarator.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.106.l013202
Abstract: The transition from strong (fluidlike) to nearly marginal (Floquet-type) regimes of ion-temperature-gradient (ITG) driven turbulence is studied in the stellarator Wendelstein 7-X by means of numerical simulations. Close to marginality, extended (along magnetic field lines)… read more here.
Keywords: close marginality; wendelstein; gyrokinetic electrostatic; stellarator ... See more keywords
Neutronic Assessments towards a Novel First Wall Design for a Stellarator Fusion Reactor with Dual Coolant Lithium Lead Breeding Blanket
Sign Up to like & getrecommendations! Published in 2023 at "Energies"
DOI: 10.3390/en16114430
Abstract: The Stellarator Power Plant Studies Prospective R&D Work Package in the Eurofusion Programme was settled to bring the stellarator engineering to maturity, so that stellarators and particularly the HELIAS (HELical-axis Advanced Stellarator) configuration could be… read more here.
Keywords: breeding blanket; dual coolant; blanket; stellarator ... See more keywords