The excitation of collective instabilities by super-thermal particles in hot plasmas and the
related transport processes attract increasing interest due to their fundamental challenges …

This paper presents the current state of the global gyrokinetic code Orb 5 as an update of the
previous reference (Jolliet et al., 2007). The Orb 5 code solves the electromagnetic Vlasov …

This paper reports verification and validation of linear simulations of Alfvén eigenmodes in
the current ramp phase of DIII-D L-mode discharge# 159243 using gyrokinetic, gyrokinetic …

We adopt gyrokinetic theory to extract the phase space zonal structure from the flux surface
averaged particle response, that is, the nonlinear response that is undamped by …

Aiming to fill a corresponding lack of sophisticated test cases for global electromagnetic
gyrokinetic codes, a new hierarchical benchmark is proposed. Starting from established test …

The pullback scheme is implemented in the global gyrokinetic particle-in-cell code ORB5
(Jolliet et al., 2007 [1]) to mitigate the cancellation problem in electromagnetic simulations …

The nonlinear dynamics of beta-induced Alfvén eigenmodes (BAEs) driven by energetic
particles (EPs) in the presence of ion-temperature-gradient turbulence is investigated, by …

One of the major challenges in magnetic confinement thermonuclear fusion research
concerns the confinement of the energetic particles (EPs) produced by fusion reactions …

Fast particles in fusion plasmas may drive Alfvén modes unstable leading to fluctuations of
the internal electromagnetic fields and potential loss of particles. Such instabilities can have …

The main idea of the gyrokinetic dynamical reduction consists in a systematical removal of
the fast scale motion (the gyromotion) from the dynamics of the plasma, resulting in a …