Results 11 to 20 of about 415 (105)

A single-field-period quasi-isodynamic stellarator

Journal of Plasma Physics, 2022
A single-field-period quasi-isodynamic stellarator configuration is presented. This configuration, which resembles a twisted strip, is obtained by the method of direct construction, that is, it is found via an expansion in the distance from the magnetic ...
Drevlak, M., Helander, P., Jorge, R., Landreman, M., Lobsien, J. -F., Mata, K. Camacho, Plunk, G. G.   +6 more
core   +3 more sources

Reduced electrostatic turbulence in the quasi-isodynamic stellarator configuration CIEMAT-QI4

Nuclear Fusion
CIEMAT-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, I. Calvo, E. Sánchez, H. Thienpondt, J.L. Velasco, J.A. Capitán   +5 more
doaj   +2 more sources

Development of quasi-isodynamic stellarators [PDF]

Plasma Physics and Controlled Fusion, 2010
Theoretical stellarator research from MHD-stable stellarators via quasi-helically symmetric ones to Wendelstein 7-X, quasi-axisymmetric tokamaks and quasi-isodynamic stellarators is sketched. Research strategy, computational aspects and various favorable properties are emphasized.
Proll, J., Helander, P., Xanthopoulos, P., Connor, J.   +3 more
  +11 more sources

Original Russian Text © M.I. Mikhailov, V.D. Shafranov, J. Nührenberg, 2009, published in Fizika Plazmy, 2009, Vol. 35, No. 7, pp. 579–584 [PDF]

Plasma Physics Reports, 2009
The sensitivity of a high-β quasi-isodynamic stellarator equilibrium with respect to changes of the plasma pressure is investigated. It is shown that a plasma boundary near to the high-β boundary exists with the property that the magnetohydrodynamic and drift-kinetic properties of the associated low-β plasma are similar.
Mikhailov, M., Nührenberg, J., Shafranov, V.   +2 more
core   +4 more sources

Trapped-particle Instabilities in Quasi-isodynamic Stellarators

, 2014
Proll, J.
core   +4 more sources

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

Improving the stellarator through advances in plasma theory [PDF]

, 2022
Improvements to the stellarator concept can be realized through advancements in theoretical and computational plasma physics. Herein, recent advances are reported in the topical areas of: 1) improved energetic ion confinement, 2) the impact of three ...
Anderson, D., Bader, A., Bechtel, T., Bhattacharjee, A., Cole, M., Drevlak, M., Duff, J., Faber, B., Hegna, C., Hudson, S., Kotschenreuther, M., Kruger, T., Landreman, M., McKinney, I., Paul, E., Pueschel, M., Schmitt, J., Terry, P., Ware, A., Zarnstorff, M., Zhu, C.   +20 more
core   +2 more sources

Helicity of the magnetic axes of quasi-isodynamic stellarators

Journal of Plasma Physics, 2023
In this study, we explore the influence of the helicity of the magnetic axis – defined as the self-linking number of the curve – on the quality of quasi-isodynamic stellarator-symmetric configurations constructed using the near-axis expansion method (Plunk et al., J. Plasma Phys., vol. 85, 2019, 905850602; Camacho Mata et al., J. Plasma Phys., vol. 88,
Camacho Mata, K. ; https://orcid.org/0000-0002-0490-0431, Plunk, G. ; https://orcid.org/0000-0002-4012-4038   +1 more
openaire   +4 more sources

The universal instability in optimised stellarators [PDF]

, 2023
In tokamaks and neoclassically optimised stellarators, like Wendelstein 7-X (W7-X) and the Helically Symmetric Experiment, turbulent transport is expected to be the dominant transport mechanism. Among the electrostatic instabilities that drive turbulence,
Alcusón, J.A., Costello, P., Plunk, G.G., Proll, J.H.E., Pueschel, M.J.   +4 more
core   +2 more sources

Near-axis measures of quasi-isodynamic configurations

Journal of Plasma Physics
We present a number of measures and techniques to characterise and effectively construct quasi-isodynamic stellarators within the near-axis framework, without the need to resort to the computation of global equilibria. These include measures of the reliability of the model (including aspect-ratio limits and the appearance of ripple wells ...
Eduardo Rodríguez, Gabriel Plunk
openaire   +4 more sources