Results 71 to 80 of about 302,060 (167)

Spherical tokamaks with a high current carrying plasma center column [PDF]

, 2018
Spherical tokamaks (STs) have many advantages from the perspective of a fusion reactor. A further improvement would be to replace the center post by a plasma center column (PCC).
Garcia Martinez, Pablo Luis, P. L. Garcia-Martinez, Lampugnani, Leandro Gabriel, L. G. Lampugnani, R. Farengo, Farengo, Ricardo   +5 more
core   +1 more source

Development of plasma burn-through simulation code and validation in SUNIST-2 and EAST

Nuclear Fusion
A full electromagnetic plasma burn-through simulation code has been developed to improve understanding of the plasma breakdown and initiation process in tokamaks, including spherical tokamaks.
Ximan Li, Zichong Song, Yunxiao Wei, Runze Chen, Wenbin Liu, Zhengbo Cheng, Jinping Qian, Yi Tan, Long Zeng, Zhe Gao   +9 more
doaj   +1 more source

Self‐Organized Growth of Catalyst‐Free Single Crystal WnO3n‐2 (n = 25) Nanowire Bundles on Si (111) via Selective He+ Ion Irradiation

Advanced Materials Interfaces, Volume 12, Issue 10, May 19, 2025.
A novel and efficient method is explored to synthesize 1D single‐crystal sub‐stoichiometric WnO3n‐2 (n = 25) nanowire bundles. The approach utilizes selective low‐energy He+ ion irradiation (27 eV) on Mo‐Ni doped WOx surface, achieving efficient catalyst‐free self‐organized growth of high aspect ratio nanowires at the temperature of 700 °C.
Maryna Bilokur, Matt Thompson, Matthew Arnold, Cormac Corr   +3 more
wiley   +1 more source

Fluctuation Measurements in Tokamaks with Microwave Imaging Reflectometry [PDF]

, 2001
To study the mechanism of anomalous transport in tokamaks requires the use of sophisticated diagnostic tools for the measurement of short-scale turbulent fluctuations. In this article, we describe an attempt at developing a technique capable of providing
Luhmann, N. C. Jr., Munsat, T., Mazzucato, E., Domier, C. W., M.J. van de Pol, Domier, C.W., van de Pol, M. J., N C Luhmann Jr., Deng, B. H., Donne, A. J. H., Deng, B.H., Park, H.   +11 more
core   +1 more source

On the importance of parallel magnetic-field fluctuations for electromagnetic instabilities in STEP

Nuclear Fusion
This paper discusses the importance of parallel perturbations of the magnetic-field in gyrokinetic simulations of electromagnetic instabilities and turbulence at mid-radius in the burning plasma phase of the conceptual high- β , reactor-scale, tight ...
D. Kennedy, C.M. Roach, M. Giacomin, P.G. Ivanov, T. Adkins, F. Sheffield, T. Görler, A. Bokshi, D. Dickinson, H.G. Dudding, B.S. Patel   +10 more
doaj   +1 more source

Discrete compressional Alfvén eigenmode spectrum in tokamaks [PDF]

, 2006
The spectrum of compressional Alfvén eigenmodes (CAE) is analysed and shown to be discrete in tokamaks with low aspect ratio, such as the National Spherical Torus Experiment (NSTX), as well as in conventional tokamaks, such as DIII-D.
Gorelenkov, NN, Peebles, WA, Crocker, NA, Heidbrink, WW, Fredrickson, ED, Kubota, S   +5 more
core   +1 more source

Real-time plasma equilibrium reconstruction and shape control for the MAST Upgrade tokamak

Nuclear Fusion
Real-time magnetic control has been developed to deliver precise control of multiple plasma shape parameters for advanced divertor configurations, including double-null, Super-X, X-point target and X-divertor for the first time on the MAST Upgrade (MAST ...
H. Anand, W. Wehner, D. Eldon, A. Welander, Z. Xing, A. Lvovskiy, J. Barr, E. Cho, B. Sammuli, D. Humphreys, N. Eidietis, A. Leonard, M. Kochan, C. Vincent, G. McArdle, G. Cunningham, A. Thornton, J. Harrison, V. Soukhanovskii, J. Lovell   +19 more
doaj   +1 more source

Fast ion orbits in spherical tokamaks [PDF]

Physics of Plasmas, 1996
In a spherical tokamak, the 1/R variation of the toroidal field is extreme, and for a given value of the safety factor a relatively low average toroidal field can be used, together with large plasma current and large plasma minor radius and elongation. The poloidal and toroidal fields are then of similar size.
openaire   +1 more source

A procedure for the design of snowflake magnetic configurations in tokamaks

, 2014
This paper deals with the design of snowflake (SF) plasma configurations in tokamaks. The SF configuration represents a promising solution for the power exhaust and divertor design problem due to its ability to flare the scrape-off layer in the vicinity ...
Albanese, R, R Ambrosino, MATTEI, Massimiliano, AMBROSINO, ROBERTO, R Albanese, Mattei, M., Albanese, R., Ambrosino, R., M Mattei   +8 more
core   +1 more source

HIPED: machine learning framework for spherical tokamak pedestal prediction and optimization

Nuclear Fusion
We introduce a machine learning framework, HIPED (HeIght and width Predictor for Edge Dynamics), for predicting and optimizing pedestal and core performance in spherical tokamak plasmas.
J.F. Parisi, J.G. Clark, J.W. Berkery, C. Bowman, C.J. Fitzpatrick, S.M. Kaye, M. Lampert   +6 more
doaj   +1 more source