Global gyrokinetic simulations of kinetic-ballooning-mode turbulence in Wendelstein 7-X
We apply the global gyrokinetic code GENE-3D to perform kinetic-ballooning-mode (KBM) turbulence simulations in the Wendelstein 7-X (W7-X) stellarator using experimentally relevant parameters. In contrast to the flux-tube approach, we observe saturation of the turbulent fluctuations at finite amplitude. Analyzing the turbulent characteristics, we identify the presence of weakly driven KBM turbulence hybridizing with ion-temperature-gradient and trapped-electron-mode turbulence in the scenario under consideration, showing that it is possible that KBM activity can be driven in W7-X, opening up the path for studying this type of turbulence, which is highly relevant for future fusion power plants.
Authors
- D. Zhang
- T. Stange (ORCID: https://orcid.org/0000-0003-4154-1455)
- G. Merlo (ORCID: https://orcid.org/0000-0003-4877-1456)
- A. Langenberg (ORCID: https://orcid.org/0000-0002-2107-5488)
- A. Bañón Navarro
- F. Wilms (ORCID: https://orcid.org/0000-0001-9859-7420)
- S. Bozhenkov (ORCID: https://orcid.org/0000-0003-4289-3532)
- A. Di Siena (ORCID: https://orcid.org/0000-0002-5430-6713)
- P. Zs. Pölöskei (ORCID: https://orcid.org/0000-0001-7781-5599)
- N. Pablant (ORCID: https://orcid.org/0000-0001-6617-8459)
- G. Weir (ORCID: https://orcid.org/0000-0002-2370-409X)
- O. Ford (ORCID: https://orcid.org/0000-0002-5646-4758)
- G. Fuchert (ORCID: https://orcid.org/0000-0002-6640-2139)
- T. Windisch (ORCID: https://orcid.org/0009-0007-9781-106X)
- F. Jenko
- Thilo Romba (ORCID: https://orcid.org/0000-0002-2727-9385)
- E. Pasch
Institutions
- Princeton Plasma Physics Laboratory (US)
- Max Planck Institute for Plasma Physics - Greifswald (DE)
- Max Planck Institute for Plasma Physics (DE)
Publication Details
- Journal
- Physics of Plasmas
- Published
- 2025-07-01
- DOI
- https://doi.org/10.1063/5.0261004
- Citations
- 1
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- Euratom Research and Training Programme