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pro vyhledávání: '"Jenko F"'
This paper presents the first gyrokinetic (GK) simulations of edge and scrape-off layer (SOL) turbulence accelerated by a velocity-space spectral approach in the full-f GK code GENE-X. Building upon the original grid velocity-space discretization, we
Externí odkaz:
http://arxiv.org/abs/2411.09232
Autor:
Di Siena, A., Garcia, J., Bilato, R., Kirov, K., Navarro, J. Varela A. Banon, Kim, Hyun-Tae, Challis, C., Hobirk, J., Kappatou, A., Lerche, E., Spong, D., Angioni, C., Gorler, T., Poli, E., Bergmann, M., Jenko, F., contributors, JET
The capability of the global, electromagnetic gyrokinetic GENE code interfaced with the transport Tango solver is exploited to address the impact of fusion alpha particles (in their dual role of fast particles and heating source) on plasma profiles a
Externí odkaz:
http://arxiv.org/abs/2406.07130
We perform 3D3V hybrid-Vlasov simulations of turbulence with quasi-isotropic, compressible injection near ion scales to mimic the Earth's magnetosheath plasma, and investigate the novel electron-only reconnection, recently observed by the NASA's MMS
Externí odkaz:
http://arxiv.org/abs/2405.16686
Autor:
Leppin, L. A., Görler, T., Frassinetti, L., Saarelma, S., Hobirk, J., Jenko, F., contributors, JET
Turbulent transport is a decisive factor in determining the pedestal structure of H-modes. Here, we present the first comprehensive characterization of gyrokinetic turbulent transport in a JET hybrid H-mode pedestal. Local, linear simulations are per
Externí odkaz:
http://arxiv.org/abs/2405.10668
Autor:
Navarro, A. Bañón, Roberg-Clark, G. T., Plunk, G. G., Fernando, D., Di Siena, A., Wilms, F., Jenko, F.
We investigate the confinement properties of two recently devised quasi-helically symmetric stellarator configurations, HSK and QSTK. Both have been optimized for large critical gradients of the ion temperature gradient mode, which is an important dr
Externí odkaz:
http://arxiv.org/abs/2310.18705
Publikováno v:
Physics of Plasmas 30, 062501 (2023)
A fast and accurate turbulence transport model based on quasilinear gyrokinetics is developed. The model consists of a set of neural networks trained on a bespoke quasilinear GENE dataset, with a saturation rule calibrated to dedicated nonlinear simu
Externí odkaz:
http://arxiv.org/abs/2306.00662
Autor:
Di Siena, A., Hayward-Schneider, T., Mantica, P., Citrin, J., Vannini, F., Bottino, A., Goerler, T., Poli, E., Bilato, R., Sauter, O., Jenko, F.
Flux-tube gyrokinetic codes are widely used to simulate drift-wave turbulence in magnetic confinement devices. While a large number of studies show that flux-tube codes provide an excellent approximation for turbulent transport in medium-large device
Externí odkaz:
http://arxiv.org/abs/2305.03596
Autor:
Leppin, L. A., Görler, T., Cavedon, M., Dunne, M. G., Wolfrum, E., Jenko, F., Team, the ASDEX Upgrade
The theoretical investigation of relevant turbulent transport mechanisms in H-mode pedestals is a great scientific and numerical challenge. In this study, we address this challenge by global, nonlinear gyrokinetic simulations of a full pedestal up to
Externí odkaz:
http://arxiv.org/abs/2303.10596
Autor:
Di Siena, A., Rodriguez-Fernandez, P., Howard, N. T., Navarro, A. Banon, Bilato, R., Goerler, T., Poli, 1 E., Merlo, G., Wrigh, J., Greenwald, M., Jenko, F.
The recent progress in high-temperature superconductor technologies has led to the design and construction of SPARC, a compact tokamak device expected to reach plasma breakeven with up to $25$MW of external ion cyclotron resonant heating (ICRH) power
Externí odkaz:
http://arxiv.org/abs/2210.11816
In this work, a comparison of the global gyrokinetic codes EUTERPE and GENE-3D in stellarator configurations of LHD and W7-X is carried out. In linear simulations with adiabatic electrons, excellent agreement is found in the mode numbers, growth rate
Externí odkaz:
http://arxiv.org/abs/2210.05467