Results 1 to 10 of about 464 (186)

Enhancing stellarator accessibility through port size optimization

Nuclear Fusion
Access to the plasma chamber in a stellarator reactor is essential for maintenance and diagnostics. However, the complex geometry of stellarator coils, often characterized by their strong twisting, can severely limit the space available for access ports.
A. Baillod, E.J. Paul, T. Elder, J.M. Halpern   +3 more
doaj   +1 more source

Neutronics analysis of spin-polarized fuel in spherical tokamaks

Nuclear Fusion
The effect of spin-polarized deuterium–tritium fuel on the blanket, magnets, and surrounding structures is analyzed for a spherical tokamak fusion power plant.
Jin Whan Bae, Katarzyna Borowiec, Vittorio Badalassi, Jason Parisi, Ahmed Diallo, Jon Menard, Andrei Khodak, Thomas Brown   +7 more
doaj   +1 more source

A framework for discrete optimization of stellarator coils

Nuclear Fusion
Designing magnets for three-dimensional plasma confinement is a key task for advancing the stellarator as a fusion reactor concept. Stellarator magnets must produce an accurate field while leaving adequate room for other components and being reasonably ...
K.C. Hammond
doaj   +1 more source

Stellar atmospheres

This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor F.R.N.
Puls, Joachim, Herrero, Artemio, Prieto, Carlos Allende   +2 more
openaire   +2 more sources

Impact of spatially varying transport coefficients in EMC3-Eirene simulations of W7-X and assessment of drifts

Nuclear Fusion
Modelling the scrape-off layer of a stellarator is challenging due to the complex magnetic 3D geometry. The here presented study analyses simulations of the scrape-off layer (SOL) of the stellarator Wendelstein 7-X (W7-X) using spatially varying ...
David Bold, Felix Reimold, Holger Niemann, Yu Gao, Marcin Jakubowski, Carsten Killer, Victoria R. Winters, Nassim Maaziz, the W7-X Team   +8 more
doaj   +1 more source

Stellar populations

, 2013
This is a summary of my lectures during the 2011 IAC Winter School in Puerto de la Cruz. I give an introduction to the field of stellar populations in galaxies, and highlight some new results. Since the title of the Winter School was {\it Secular Evolution of Galaxies} I mostly concentrate on nearby galaxies, which are best suited to study this theme ...
openaire   +3 more sources

On Stellar Rotation.

The Astrophysical Journal, 1942
Not ...
openaire   +1 more source

On a stellar structure for a stellar manifold

, 2002
It is well known that a compact two dimensional surface is homeomorphic to a polygon with the edges identified in pairs. This paper not only presents a new proof of this statement but also generalizes it for any connected n-dimensional stellar manifold with a finite number of vertices.
openaire   +2 more sources

Economically optimized design point of high-field stellarator power-plant

Nuclear Fusion
High temperature superconductors (HTSs) expand the design space of stellarator power-plants (PPs) toward high magnetic fields B , enabling compact major radii R .
Victor Prost, Francesco A. Volpe
doaj   +1 more source

Suppression of tearing modes by External Rotational Transform in a Tokamak-Stellarator hybrid configuration on J-TEXT

Nuclear Fusion
A Tokamak-Stellarator hybrid configuration has been established on the J-TEXT tokamak by the application of stellarator-like External Rotational Transform (ERT) coils.
Yangbo Li, Nengchao Wang, Bo Rao, Feiyue Mao, Chuanxu Zhao, Zhengkang Ren, Zhiyu Meng, Zijian Xuan, Song Zhou, Ruomu Wang, Xixuan Chen, Wei Zheng, Yasuhiro Suzuki, Zhonghe Jiang, the J-TEXT Team   +14 more
doaj   +1 more source