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physics.plasm-ph2025
Is Turbulence able to Generate Magnetic Islands in Tokamaks? Gyrokinetic Simulations of Turbulence-Driven Magnetic Islands in Toroidal Geometry
Fabien Widmer, Emanuele Poli, Alexey Mishchenko +3
We report a universal mechanism for turbulence-driven magnetic islands in fusion plasmas. Using gyrokinetic simulations of a linearly stable tearing mode in a large-aspect-ratio to…
physics.plasm-ph2024
Linear and Nonlinear Dynamics of Self-Consistent Collisionless Tearing Modes in Toroidal Gyrokinetic Simulations
Fabien Widmer, Emanuele Poli, Alexey Mishchenko +3
We investigate tearing modes (TM) driven by current density gradient in collisionless tokamak plasmas by using the electromagnetic gyrokinetic simulation code ORB5. We elucidate th…
physics.plasm-ph2023
Global Linear and Nonlinear Gyrokinetic Simulations of Tearing Modes
T. Jitsuk, A. Di Siena, M. J. Pueschel +4
To better understand the interaction of global tearing modes and microturbulence in the Madison Symmetric Torus (MST) reversed-field pinch (RFP), the global gyrokinetic code \texts…