# Implementation of energy transfer technique in ORB5 to study collisionless wave-particle interactions in phase-space

@article{Novikau2019ImplementationOE, title={Implementation of energy transfer technique in ORB5 to study collisionless wave-particle interactions in phase-space}, author={I. Novikau and Alessandro Biancalani and Alberto Bottino and Alessandro Di Siena and Philipp Lauber and Emanuele Poli and Emmanuel Lanti and Laurent Villard and No{\'e} Ohana and Sergio Briguglio}, journal={Comput. Phys. Commun.}, year={2019}, volume={262}, pages={107032} }

## 10 Citations

### Nonlinear dynamics of energetic-particle driven geodesic acoustic modes in ASDEX Upgrade

- Physics
- 2019

Turbulence in tokamaks generates radially sheared zonal flows (ZFs). Their oscillatory counterparts, geodesic acoustic modes (GAMs), appear due to the action of the magnetic field curvature. The GAMs…

### Gyrokinetic investigation of the nonlinear interaction of Alfvén instabilities and energetic particle-driven geodesic acoustic modes

- PhysicsPhysics of Plasmas
- 2021

This paper presents a study of the interaction between Alfven modes and zonal structures, considering a realistic ASDEX Upgrade equilibrium. The results of gyrokinetic simulations with the global,…

### Analysis of the nonlinear dynamics of a chirping-frequency Alfv\'en mode in a Tokamak equilibrium

- Physics
- 2021

Chirping Alfvén modes are considered as potentially harmful for the confinement of energetic particles in burning Tokamak plasmas because of their capability, by modifying their frequency, of…

### Gyrokinetic modeling of anisotropic energetic particle driven instabilities in tokamak plasmas

- PhysicsNuclear Fusion
- 2022

Energetic particles produced by neutral beams are observed to excite energetic-particle-driven geodesic acoustic modes in tokamaks. We study the effects of anisotropy of distribution function of the…

### Gyrokinetic investigation of Alfvén instabilities in the presence of turbulence

- PhysicsPlasma Physics and Controlled Fusion
- 2021

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 means of selfconsistent…

### The systematic investigation of energetic-particle-driven geodesic acoustic mode channeling using MEGA code

- PhysicsNuclear Fusion
- 2020

Energetic-particle-driven geodesic acoustic modes (EGAMs) channeling in the Large Helical Device (LHD) plasmas are systematically investigated for the first time using MEGA code. MEGA is a hybrid…

### Effect of the electron redistribution on the nonlinear saturation of Alfvén eigenmodes and the excitation of zonal flows

- PhysicsJournal of Plasma Physics
- 2020

Numerical simulations of Alfvén modes driven by energetic particles are performed with the gyrokinetic (GK) global particle-in-cell code ORB5. A reversed shear equilibrium magnetic field is adopted.…

### Gyrokinetic investigation of the damping channels of Alfvén modes in ASDEX Upgrade

- PhysicsPhysics of Plasmas
- 2020

The linear destabilization and nonlinear saturation of energetic-particle driven Alfvenic instabilities in tokamaks strongly depend on the damping channels. In this work, the collisionless damping…

### Gyrokinetic modelling of the Alfvén mode activity in ASDEX Upgrade with an isotropic slowing-down fast-particle distribution

- PhysicsNuclear Fusion
- 2022

In the present paper, the evolution of the Alfvén modes (AMs) is studied in a realistic ASDEX Upgrade equilibrium by analyzing the results of simulations with the global, electromagnetic, gyrokinetic…

### Evidence of ‘two plasmon’ decay of energetic particle induced geodesic acoustic mode

- Physics
- 2021

Secondary low frequency mode generation by energetic particle induced geodesic acoustic mode (EGAM) observed in LHD experiment is studied using nonlinear gyrokinetic theory. It is found that the EGAM…

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The linear properties of the geodesic acoustic modes (GAMs) in tokamaks are investigated by means of the comparison of analytical theory and gyrokinetic numerical simulations. The dependence on the…

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The effect of the plasma elongation on the energetic-particle-induced geodesic acoustic mode (EGAM) dynamics is studied with numerical simulations performed with the gyrokinetic codes GENE and ORB5…

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The nonlinear dynamics of energetic-particle (EP) driven geodesic acoustic modes (EGAM) is investigated here. A numerical analysis with the global gyrokinetic particle-in-cell code ORB5 is performed,…

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In order to provide scaling formulae for the geodesic acoustic mode (GAM) frequency and damping rate, GAMs are studied by means of the gyrokinetic global particle-in-cell code ORB5. Linear…

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Turbulence plays a key role in the conversion of the energy of large-scale fields and flows to plasma heat, impacting the macroscopic evolution of the heliosphere and other astrophysical plasma…

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- 2018

Geodesic acoustic modes (GAM) are oscillating zonal structures unique to toroidal plasmas, and have been extensively studied in the past decades due to their potential capabilities of regulating…

### Nonlinear gyrokinetic investigation of energetic particle driven geodesic acoustic modes

- Physics
- 2018

Introduction Zonal (i.e. axisymmetric) radial electric fields, associat ed to zonal poloidal flows, are known to develop in tokamak plasmas in the presence of turbulence. These zonal structures (ZS),…

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