Zobrazeno 1 - 10
of 167
pro vyhledávání: '"negative triangularity"'
Autor:
Linjin Zheng, M.T. Kotschenreuther, F.L. Waelbroeck, M.E. Austin, W.L. Rowan, P. Valanju, X. Liu
Publikováno v:
Fundamental Plasma Physics, Vol 10, Iss , Pp 100051- (2024)
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 is
Externí odkaz:
https://doaj.org/article/d9085c47e91f4b9e812ab936c903e8ce
Autor:
W. Boyes, F. Turco, J. Hanson, G.A. Navratil, A. Turnbull, A. Hyatt, T. Luce, W. Meyer, A.O. Nelson, T. Odstrcil, T. Osborne, F. Scotti, A. Welander, A. Wingen
Publikováno v:
Nuclear Fusion, Vol 64, Iss 12, p 124005 (2024)
Evidence of a MHD dynamo brought about by intrinsic helical core structures in negative triangularity (NT) and ITER baseline scenario (IBS) plasmas demonstrates paths to operating tokamaks without seeds for deleterious global MHD modes. A stationary
Externí odkaz:
https://doaj.org/article/7e7f52fdd7c24dd1bed268065053328c
Autor:
A.O. Nelson, C. Vincent, H. Anand, J. Lovell, J.F. Parisi, H.S. Wilson, K. Imada, W.P. Wehner, M. Kochan, S. Blackmore, G. McArdle, S. Guizzo, L. Rondini, S. Freiberger, C. Paz-Soldan, the MAST-U Team
Publikováno v:
Nuclear Fusion, Vol 64, Iss 12, p 124004 (2024)
A plasma scenario with negative triangularity (NT) shaping is achieved on MAST-U for the first time. While edge localized modes (ELMs) are eventually suppressed as the triangularity is decreased below $\delta\lesssim-0.06$ , an extended period of H-m
Externí odkaz:
https://doaj.org/article/71feec7458914da58b1b6f8b868a7b2f
Autor:
J. Dominguez-Palacios, M. Garcia-Munoz, M. Toscano-Jimenez, Y.Q. Liu, A. Mancini, D.J. Cruz-Zabala, J.W. Berkery, J.A. Labbate, J. Parisi, Y. Todo, A. Reyner-Viñolas, M. Podestà, E. Viezzer, P. Oyola, S. Futatani
Publikováno v:
Nuclear Fusion, Vol 64, Iss 12, p 126028 (2024)
Linear magnetohydrodynamic (MHD) simulations for the SMall Aspect Ratio Tokamak (SMART) have been carried out for the first time, for both positive (PT) and negative triangularity (NT) shaped plasmas using the MARS-F code. The MHD stability of projec
Externí odkaz:
https://doaj.org/article/b6eb6c0f4e044cb1ada96d9e1ad69e94
Autor:
O. Krutkin, U. Kumar, S. Mazzi, S. Brunner, S. Coda, S. Rienäcker, M. van Rossem, the TCV Team
Publikováno v:
Nuclear Fusion, Vol 64, Iss 2, p 026010 (2024)
Experimental measurements of the turbulence amplitude utilizing a short pulse reflectometry method are presented. Two discharges with shaped plasma possessing opposite signs of triangularity are considered and a higher turbulence amplitude is found i
Externí odkaz:
https://doaj.org/article/734f46fe74ec4636877c2a248f72dc60
Publikováno v:
Nuclear Fusion, Vol 64, Iss 2, p 026020 (2024)
We present an analytical model to evaluate the triangularity-shaping effects in accessing the second stable region for the ideal ballooning mode. Our results indicate that if the triangularity is sufficiently negative, the path from the first to the
Externí odkaz:
https://doaj.org/article/029220c97357487683e75defb2b67525
Autor:
A. Mariani, A. Balestri, P. Mantica, G. Merlo, R. Ambrosino, L. Balbinot, D. Brioschi, I. Casiraghi, A. Castaldo, L. Frassinetti, V. Fusco, P. Innocente, O. Sauter, G. Vlad
Publikováno v:
Nuclear Fusion, Vol 64, Iss 4, p 046018 (2024)
Plasmas with negative triangularity (NT) shape have been recently shown to be able to achieve H-mode levels of confinement in L-mode, avoiding detrimental edge localised modes. Therefore, this plasma geometry is now studied as a possible viable optio
Externí odkaz:
https://doaj.org/article/67974a29168b48ff86edf34ce44e080d
Autor:
M.J. Pueschel, S. Coda, A. Balestri, J. Ball, R.J.J. Mackenbach, J.M. Duff, G. Snoep, the TCV Team
Publikováno v:
Nuclear Fusion, Vol 64, Iss 5, p 056032 (2024)
Based on a gyrokinetic analysis of and extrapolation from TCV discharges with large negative and positive triangularity δ , the potential of extreme $|\delta|$ in reducing turbulent transport is assessed. Linearly, both positive and negative δ can
Externí odkaz:
https://doaj.org/article/39eb8bbaf47f4648b90ba0f611cc191f
Autor:
F. Scotti, A. Marinoni, A.G. McLean, C. Paz-Soldan, K.E. Thome, M. Zhao, S. Allen, M. Austin, M.G. Burke, D. Eldon, M. Fenstermacher, A. Hyatt, C.J. Lasnier, A. Leonard, J. Lore, A.O. Nelson, T. Osborne, O. Sauter, D. Truong, M.A. Van Zeeland, H.Q. Wang, R. Wilcox
Publikováno v:
Nuclear Fusion, Vol 64, Iss 9, p 094001 (2024)
Experiments performed during strongly-shaped high-power diverted negative triangularity (NT) experiments in DIII-D achieved detached divertor conditions and a transient-free edge, showcasing the potential for application of NT to a core-edge integrat
Externí odkaz:
https://doaj.org/article/aaec6b7e004444d0aad3c6e50c13fd1a
Autor:
C. Paz-Soldan, C. Chrystal, P. Lunia, A.O. Nelson, K.E. Thome, M.E. Austin, T.B. Cote, A.W. Hyatt, N. Leuthold, A. Marinoni, T.H. Osborne, M. Pharr, O. Sauter, F. Scotti, T.M. Wilks, H.S. Wilson
Publikováno v:
Nuclear Fusion, Vol 64, Iss 9, p 094002 (2024)
Strongly-shaped diverted negative triangularity (NT) plasmas in the DIII-D tokamak demonstrate simultaneous access to high normalized density, current, pressure, and confinement. NT plasmas are shown to exist across an expansive parameter space compa
Externí odkaz:
https://doaj.org/article/2e8320b464af4043a0dc15372862b64b