Results 291 to 300 of about 5,366,310 (324)

Negative-Triangularity Configuration on EAST: Analysis of engineering limitations on superconducting, D-shaped, target-diverted plasmas

, 2019
D. Weldon, Bingjia Xiao, Zhengping Luo, A.S. Welander, Qiping Yuan, Yuehang Wang, Yao Huang   +6 more
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A brief history of negative triangularity tokamak plasmas

Reviews of Modern Plasma Physics, 2021
This review is devoted to tokamak plasmas with a cross sectional shape featuring negative triangularity, which appear to hold great promise as a candidate reactor configuration owing to their improved confinement. A brief historical perspective of its role in the worldwide magnetic fusion program is offered before reviewing theoretical predictions and ...
A. Marinoni, O. Sauter, S. Coda
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Understanding the negative triangularity ELM trigger and ELM free state on DIII-D with ECE-imaging

Physics of Plasmas, 2023
The Electron Cyclotron Emission Imaging (ECEI) diagnostic was used to observe a finite-n interchange mode structure in the edge of negative triangularity shaped plasmas on DIII-D. At a small negative triangularity (δu = −0.2), the plasma is in the H-mode
G. Yu, Z. Li, G. Kramer, F. Scotti, A. Nelson, A. Diallo, C. Lasnier, M. Austin, X. Qin, Yao-Tseng Chen, Y. Zheng, Y. Zhu, N. Luhmann   +12 more
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Effect of rotation on negative triangularity plasmas in DIII-D

Plasma Physics and Controlled Fusion
At the DIII-D tokamak, plasmas with negative triangularity (NT) have been found to have similar energy confinement times as H-mode plasmas with positive triangularity.
C. Chrystal, Max E Austin, T. Odstrcil, C. Paz-Soldan, K. Thome, A. Marinoni, W. Boyes, T. Osborne, N. Logan, A. W. Hyatt, A. O. Nelson   +10 more
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Effect of negative triangularity on peeling-ballooning instability

Physica Scripta, 2023
Abstract Experiments have achieved high confinement discharges in tokamaks with a negative triangularity (NT) plasma shape accompanied by a lower pedestal and smaller and more frequent edge localized modes (ELMs) compared with positive triangularity (PT).
Chenchen Qin, Maolin Mou, Shaoyong Chen, Yongjian Li, Yang Luo, Limin Zhu, Liangkang Dong, Changjian Tang   +7 more
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Negative-Triangularity Magnetic Configurations in T-15MD Tokamak

Computational Mathematics and Modeling, 2021
The article focuses on a numerical analysis of the projected use of the T-15MD tokamak machine after its physical launch for generating a configuration with negative triangularity of the plasma filament cross section (an inverted D shape) on the installed magnetic field coils.
M. S. Gorbun, A. V. Melnikov, D. Yu. Sychugov   +2 more
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Negative Triangularity as a Possible Tokamak Scenario

Proceedings of the 12th Asia Pacific Physics Conference (APPC12), 2014
Recent Tokamak research clarified that the heat flux to the divertor is critical not only during ELM but also during inter ELM period in ITER and far more critical in DEMO. The narrow SOL heat channel causes the high steady-state heat flux to the divertor plate.
Mitsuru Kikuchi, Tomonori Takizuka, Masaru Furukawa   +2 more
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Experimental characterization of turbulence properties in negative triangularity DIII-D plasmas

Plasma Physics and Controlled Fusion
Negative Triangularity (NT) plasmas have demonstrated robustly ELM-free high-performance operation and provide a unique testbed to study how plasma shaping affects turbulent transport.
S. D. Stewart, G. McKee, C. Chrystal, T. Cote, B. Geiger, F. Khabanov, A. O. Nelson, Xijie Qin, C. Paz-Soldan, L. Schmitz, K. Thome, Z. Yan   +11 more
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Negative triangularity tokamak operation in TCV

2023
TCV experiments and novel theoretical studies have addressed key questions regarding the operational space of negative triangularity (NT) plasmas in view of an L-mode NT reactor, in terms of stability, performance properties and core-edge integration.
Sauter O, Bagnato F, Balestri A, Ball J, Brunner S, Coda S, Di Giannatale G, Duval B, Fevrier O, Merle A, Murugappan M, Pau A, Porte L, Sheikh U, Vallar M, Villard L, Vu T, Boedo JA, Tsui CK, Bolzonella T, Pigatto L, Mantica P, Mariani A, Marinoni A, Medvedev SYu, Piron C, Dunne MG, Faitsch M, Viezzer E   +28 more
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Electromagnetic instability and turbulence in plasmas with positive and negative triangularity

Physics of Plasmas
While a number of studies exist comparing positive triangularity (PT) and negative triangularity (NT) δ, the nature of how the normalized electron pressure β affects microinstabilities and turbulence in fusion devices with substantial δ has not been ...
M. Pueschel, P. Mulholland, O. Sauter, R. Coosemans, J. Ball, M. Hamed, M. Vallar   +6 more
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