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
Role of Radiation Loss in Transport Processes in Self-Organized Plasma of the L-2M Stellarator
Sign Up to like & getrecommendations! Published in 2025 at "Fusion Science and Technology"
DOI: 10.1080/15361055.2025.2483060
Abstract: Abstract In many tokamaks, the effect of improving plasma energy confinement after injecting impurities, and accordingly, increasing radiation loss is observed. In this paper, we experimentally study whether this effect is observed at the L-2M… read more here.
Keywords: stellarator; plasma; energy; radiation loss ... See more keywords
Characterization of the SCR-1 stellarator physics: investigating plasma discharge, MHD equilibrium calculations, and O-X-B mode conversion feasibility
Sign Up to like & getrecommendations! Published in 2024 at "Plasma Physics and Controlled Fusion"
DOI: 10.1088/1361-6587/ada0de
Abstract: The Stellarator de Costa Rica 1 (SCR-1) is a small modular stellarator that serves as a valuable research and training tool for plasma magnetic confinement. This study aimed to analyze the characteristics of SCR-1, including… read more here.
Keywords: stellarator; plasma discharge; conversion; physics ... 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
A study of turbulent filaments in the edge plasma of the Wendelstein 7-X stellarator
Sign Up to like & getrecommendations! Published in 2024 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ad365e
Abstract: Filaments are studied by examining fast camera images on the Wendelstein 7-X stellarator. Fast cameras offer a unique perspective, revealing the complex 3D structure of filaments in the entire poloidal cross-section of the plasma. By… read more here.
Keywords: turbulent filaments; filaments edge; edge plasma; stellarator ... See more keywords
Direct optimization of neoclassical ion transport in stellarator reactors
Sign Up to like & getrecommendations! Published in 2024 at "Nuclear Fusion"
DOI: 10.1088/1741-4326/ad75a6
Abstract: 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. Traditional neoclassical stellarator optimization has focused on… read more here.
Keywords: neoclassical ion; transport; ion transport; stellarator ... See more keywords