Results 31 to 40 of about 5,366,310 (324)

Simultaneous access to high normalized density, current, pressure, and confinement in strongly-shaped diverted negative triangularity plasmas

Nuclear Fusion, 2023
Strongly-shaped diverted negative triangularity (NT) plasmas in the DIII-D tokamak demonstrate simultaneous access to high normalized density, current, pressure, and confinement.
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   +15 more
doaj   +2 more sources

High performance power handling in the absence of an H-mode edge in negative triangularity DIII-D plasmas

Nuclear Fusion
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 integrated ...
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   +21 more
doaj   +2 more sources

L-mode-edge negative triangularity tokamak reactor [PDF]

Nuclear Fusion, 2019
M. Kikuchi, T. Takizuka, S. Yu. Medvedev, T. Ando, Dehong Chen, J.X. Li, M. E. Austin, O. Sauter, L. Ṽillard, A. Merle, M. Fontana, Y. Kishimoto, Kenji Imadera   +12 more
openalex   +3 more sources

Operation above the Greenwald density limit in high performance DIII-D negative triangularity discharges

Plasma Physics and Controlled Fusion
The density limit in strongly-shaped negative triangularity (NT) discharges is studied experimentally in the DIII-D tokamak. Record-high Greenwald fractions fG are obtained, using gas puff injection only, with values up to near 2, where fG is defined as ...
O. Sauter, R. Hong, A. Marinoni, F. Scotti, P. H. Diamond, C. Paz-Soldan, D. Shiraki, K. E. Thome, M. A. Van Zeeland, Huiqian Wang, Z. Yan, the negD-DIII-D Team   +11 more
openalex   +2 more sources

Fast ion confinement in negative triangularity plasmas on the TCV tokamak

Nuclear Fusion
Negative triangularity (NT) plasma configurations have been extensively studied in the Tokamak á Configuration Variable (TCV), and have displayed enhanced heat confinement for thermal electrons and ions.
J. Poley-Sanjuán, A. Jansen Van Vuuren, M. Podestà, A. Fasoli, A.N. Karpushov, B.P. Duval, the TCV Team   +6 more
doaj   +2 more sources

On the effect of negative triangularity on ion temperature gradient turbulence in tokamaks

Physics of Plasmas, 2023
Considering the same magnetic equilibrium and plasma conditions as in Duff et al. [Phys. Plasmas 29, 012303 (2022)], we perform linear and nonlinear simulations of electrostatic ion temperature gradient turbulence investigating the role of triangularity ...
G. Merlo, M. Dicorato, Bryce Allen, T. Dannert, K. Germaschewski, F. Jenko   +5 more
semanticscholar   +3 more sources

Divertor characterization and access to dissipative divertor conditions in negative triangularity discharges in DIII-D

Plasma Physics and Controlled Fusion
Reduced radial transport, short midplane-to-target parallel connection lengths, and a strong effect of cross-field drifts were responsible for the high densities required for detachment in strong negative triangularity (NT) configurations in DIII-D ...
F. Scotti, A. Marinoni, A.G. McLean, A. Nelson, C. Paz-Soldan, K. E. Thome, Menglong Zhao, S. W. Allen, M. E. Austin, M.G. Burke, I. Bykov, C. Chrystal, D. Eldon, M.E. Fenstermacher, A.W. Hyatt, F. Glass, C.J. Lasnier, J. Lore, A.W. Leonard, C. Murphy, T.H. Osborne, O. Sauter, D Truong, Huiqian Wang, R.S. Wilcox   +24 more
openalex   +2 more sources

Negative triangularity scenarios: from TCV and AUG experiments to DTT predictions

Nuclear Fusion
Experiments, gyrokinetic simulations and transport predictions were performed to investigate if a negative triangularity (NT) L-mode option for the Divertor Tokamak Test (DTT) full-power scenario would perform similarly to the positive triangularity (PT)
A. Mariani, L. Aucone, A. Balestri, P. Mantica, G. Merlo, R. Ambrosino, F. Bagnato, L. Balbinot, J. Ball, T. Bolzonella, D. Brioschi, I. Casiraghi, A. Castaldo, S. Coda, L. Frassinetti, V. Fusco, T. Happel, J. Hobirk, P. Innocente, R.M. McDermott, P. Muscente, T. Pütterich, O. Sauter, F. Sciortino, M. Vallar, B. Vanovac, N. Vianello, G. Vlad, C.F.B. Zimmermann, the EUROfusion Tokamak Exploitation team, the TCV Team, the ASDEX Upgrade Team   +31 more
doaj   +2 more sources

Pedestal properties of negative triangularity discharges in ASDEX Upgrade

Plasma Physics and Controlled Fusion
In this work, we explore the pedestal properties of negative triangularity discharges with upper triangularity of δu≈−0.35 and with both ion ∇B drift directions. In all cases, the discharges undergo a transition to H-mode with accompanying edge-localized
B. Vanovac, M. Dunne, T. Pütterich, T. Happel, J. Hobirk, D. Silvagni, M. Faitsch, Kiwoon Lee, Garrard D Conway, R. Bielajew, C. Yoo, A. White, M. Bernert, P. David, Rainer Fischer, D. Stieglitz   +15 more
semanticscholar   +3 more sources

Verification of the kinetic electron role in the microinstabilities in a negative triangularity model equilibrium [PDF]

Physics of Plasmas
Effect of kinetic electrons on negative triangularity plasmas has been investigated and compared against the corresponding positive triangularity plasmas, using the global gyrokinetic code X-point Gyrokinetic Code with scale-separated delta-f option ...
Jessica L. Li, C. S. Chang, R. Hager, A. Reiman, M. C. Zarnstorff   +4 more
openalex   +2 more sources