Results 11 to 20 of about 5,366,310 (324)

Prospects of negative triangularity tokamak for advanced steady-state confinement of fusion plasmas in MHD stability consideration [PDF]

Fundamental Plasma Physics
The steady-state confinement, beta limit, and divertor heat load are among the most concerned issues for toroidal confinement of fusion plasmas. In this work, we show that the negative triangularity tokamak has promising prospects to address these issues.
Linjin Zheng, M.T. Kotschenreuther, F.L. Waelbroeck, M.E. Austin, W.L. Rowan, P. Valanju, X. Liu   +6 more
doaj   +4 more sources

Analysis of edge transport in L-mode negative triangularity TCV discharges

Nuclear Materials and Energy, 2023
One of the major problems for future tokamak devices are ELMs (Edge Localized Modes) as they can lead to large, uncontrolled heat fluxes at the machine targets. For this reason, different techniques and alternative magnetic configurations are under study
P. Muscente, P. Innocente, J. Ball, S. Gorno   +3 more
doaj   +8 more sources

Electromagnetic system conceptual design for a negative triangularity tokamak

Fusion Engineering and Design
Negative triangularity (NT) tokamak configurations have several key benefits including sufficient core confinement, improved power handling, and reduced edge pressure gradients that allow for edge-localized mode (ELM) free operation.
S. Guizzo, M. Drabinskiy, C. Hansen, Alexander G. Kachkin, E. N. Khairutdinov, A. O. Nelson, Maxim R. Nurgaliev, M. Pharr, Georgy Subbotin, C. Paz-Soldan   +9 more
semanticscholar   +5 more sources

Power handling in a highly-radiative negative triangularity pilot plant [PDF]

Plasma Physics and Controlled Fusion
This work explores detailed power handling solutions for a class of high-field, highly-radiative negative triangularity (NT) reactors based around the MANTA concept (Rutherford et al 2024 Plasma Phys. Control. Fusion).
Mark A. Miller, David P. Arnold, M. Wigram, A. O. Nelson, J. Witham, Gayle Rutherford, H. Choudhury, C. Cummings, C. Paz-Soldan, D. G. Whyte   +9 more
semanticscholar   +5 more sources

Vertical control of DIII-D discharges with strong negative triangularity

Plasma Physics and Controlled Fusion, 2023
Through predictive modeling validated by a series of experiments on DIII-D, the vertical stability of low β diverted plasmas with strong negative triangularity (NT) ( δ∼−0.6 ) is assessed. As a result of their unique magnetic geometry, NT plasmas feature
A. Nelson, A.W. Hyatt, W. Wehner, A.S. Welander, C. Paz-Soldan, Tom Osborne, H. Anand, K. E. Thome   +7 more
semanticscholar   +3 more sources

How does negative triangularity mitigate ITG turbulence and transport?

Nuclear Fusion
Improved confinement in negative triangularity (NT) experiments is attributed to reduced fluxes driven by micro-turbulence. The physical mechanism of why thermal confinement improves in NT relative to PT is unknown.
Rameswar Singh, P.H. Diamond, A. Marinoni   +2 more
doaj   +5 more sources

Disentangling core and edge mechanisms of the density limit in DIII-D negative triangularity plasmas

Nuclear Fusion
The density limit is investigated in the DIII-D negative triangularity plasmas which lack a standard H-mode edge. We find the limit may not be a singular disruptive boundary but a multifaceted density saturation phenomenon governed by distinct core and ...
R. Hong, P.H. Diamond, O. Sauter, J. Chen, F. Khabanov, Z. Li, D. Liu, A. Marinoni, G.R. McKee, T.L. Rhodes, F. Scotti, K.E. Thome, G.R. Tynan, M.A. Van Zeeland, Z. Yan, L. Zeng, the DIII-D NT Team   +16 more
doaj   +3 more sources

Exploring the fusion power plant design space: comparative analysis of positive and negative triangularity tokamaks through optimization

Nuclear Fusion
The optimal configuration choice between positive triangularity (PT) and negative triangularity (NT) tokamaks for fusion power plants hinges on navigating different operational constraints rather than achieving specific plasma performance metrics.
T. Slendebroek, A.O. Nelson, O.M. Meneghini, G. Dose, A.G. Ghiozzi, J. Harvey, B.C. Lyons, J. McClenaghan, T.F. Neiser, D.B. Weisberg, M.G. Yoo, E. Bursch, C. Holland   +12 more
doaj   +3 more sources

Impact of negative triangularity on edge plasma transport and turbulence in TOKAM3X simulations

Nuclear Materials and Energy, 2021
The impact of triangularity on edge plasma transport and turbulence is addressed from full 3D turbulence simulations performed with TOKAM3X. Flux driven fluid simulations are run on analytical magnetic equilibria generated with positive and negative ...
E. Laribi, E. Serre, P. Tamain, H. Yang
doaj   +3 more sources

Comparison of detachment in Ohmic plasmas with positive and negative triangularity [PDF]

Plasma Physics and Controlled Fusion, 2023
In recent years, negative triangularity (NT) has emerged as a potential high-confinement L-mode reactor solution. In this work, detachment is investigated using core density ramps in lower single null Ohmic L-mode plasmas across a wide range of upper ...
O. Février, C.K. Tsui, G. Durr-Legoupil-Nicoud, C. Theiler, M. Carpita, S. Coda, C. Colandrea, B.P. Duval, S. Gorno, E. Huett, B. Linehan, A. Perek, L. Porte, H. Reimerdes, O. Sauter, E. Tonello, M. Zurita, T Bolzonella, F. Sciortino, the TCV Team, the EUROfusion Tokamak Exploitation Team   +20 more
openalex   +3 more sources