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作者:L. Chôné , T.P. Kiviniemi
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (11)
摘要:The interplay of flows and turbulence in Ohmic FT-2 tokamak plasmas is analysed via gyrokinetic simulations with the flux-driven ELMFIRE code. The simulation predictions agree qualitatively with analytical estimates for the scaling of the neoclassical radial electric field as a f...
作者:L. Chôné , E.Z. Gusakov ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (11)
摘要:In the experiments on tangential fuel pellet injection in the TUMAN-3M tokamak an initiation of LH-transition or, in several scenarios—temporal (1–2 ms) confinement improvement with the following backwards transition was observed. To understand the possibility of the transit...
作者:L. Chôné , P. Beyer ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (7)
摘要:L-H transition features are reproduced using three-dimensional first-principles plasma edge turbulence simulations. A transport barrier is observed to form spontaneously above a threshold of the input power. The physical mechanism relies on the coupling between the equilibrium pr...
作者:L. Chôné , N. Fedorczak ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (7)
摘要:The L to H mode transition occurs at a critical power which depends on various parameters, such as the magnetic field, the density, etc. Experimental evidence on various tokamaks (JET, ASDEX-Upgrade, DIII-D, Alcator C-Mod) points towards the existence of a critical temperature ch...
作者:L. Chôné , P. Beyer ...
来源:[J].Nuclear Fusion(IF 2.734), 2014, Vol.54 (2)
摘要:In this paper, the nature of the primary instability present in the pedestal forming region prior to the transition into H mode is analysed using a gyrokinetic code on JET-ILW profiles. The linear analysis shows that the primary instability is of resistive nature, and can th...
作者:L. Chôné , T.P. Kiviniemi ...
来源:[J].Contributions to Plasma Physics(IF 0.934), 2018, Vol.58 (6-8), pp.534-539
摘要:We report new results of full‐torus gyrokinetic simulations of electrostatic turbulence with Elmfire spanning from the magnetic axis to the scrape‐off layer (SOL). The new implementation presented here uses the logical boundary condition, which allows for improved stability ...

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