Zobrazeno 1 - 10
of 1 096
pro vyhledávání: '"A, Görler"'
Autor:
Kim, Donguk, Moon, Taeuk, Sung, Choongki, Yoon, Eisung, Yi, Sumin, Kang, Jisung, Kwon, Jae-Min, Görler, Tobias, Belli, Emily, Candy, Jeff
This study presents a cross-verification of fast ion effects on turbulence through a systematic comparison of two leading gyrokinetic codes, GENE [T.Gorler et al., J. Comput. Phys. 230 7053-7071 (2011)] and CGYRO [J.Candy et al, J. Comput. Phys. 324
Externí odkaz:
http://arxiv.org/abs/2408.13731
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:
Di Siena, Alessandro, Merlo, Gabriele, Navarro, Alejandro Banon, Goerler, Tobias, Jenko, Frank
Gyrokinetic simulations conducted by Mazzi et al. reveal the suppression of turbulence in fusion plasmas through the destabilization of Toroidal Alfv\'en Eigenmodes (TAEs) by megaelectronvolt ions. Our analysis demonstrates that the authors' numerica
Externí odkaz:
http://arxiv.org/abs/2306.10780
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
Autor:
Citrin, J, Maeyama, S, Angioni, C, Bonanomi, N, Bourdelle, C, Casson, F. J, Fable, E, Goerler, T, Mantica, P, Mariani, A, Sertoli, M, Staebler, G, Watanabe, T, Contributors, JET
Publikováno v:
Nucl. Fusion 62 086025 (2022)
Previous studies with first-principle-based integrated modelling suggested that ETG turbulence may lead to an anti-GyroBohm isotope scaling in JET high-performance hybrid H-mode scenarios. A dedicated comparison study against higher-fidelity turbulen
Externí odkaz:
http://arxiv.org/abs/2209.09683
Autor:
Di Siena, A., Navarro, A. Banon, Luda, T., Merlo, G., Bergmann, M., Leppin, L., Goerler, T., Parker, J. B., LoDestro, L., Hittinger, J., Dorland, B., Hammett, G., Jenko, F., Team, the ASDEX Upgrade, Team, the EUROfusion MST1
An accurate description of turbulence up to the transport time scale is essential for predicting core plasma profiles and enabling reliable calculations for designing advanced scenarios and future devices. Here, we exploit the gap separation between
Externí odkaz:
http://arxiv.org/abs/2204.05651
A novel type of internal transport barrier (ITB) called F-ATB (fast ion-induced anomalous transport barrier) has been recently observed in state-of-the-art global gyrokinetic simulations on a properly optimized ASDEX Upgrade experiment [A. Di Siena e
Externí odkaz:
http://arxiv.org/abs/2110.09444