Gyrokinetic particle-in-cell simulations of electromagnetic turbulence in the presence of fast particles and global modes

TL;DR

This paper presents advanced gyrokinetic particle-in-cell simulations of electromagnetic turbulence and global modes in fusion plasmas, incorporating fast particles in tokamak and stellarator geometries to demonstrate computational feasibility.

Contribution

It introduces comprehensive simulations of electromagnetic turbulence and global modes with fast particles using gyrokinetic particle-in-cell codes in complex geometries.

Findings

Successful simulation of electromagnetic turbulence with fast particles.

Demonstration of computational feasibility for complex coupled systems.

Application to tokamak and stellarator geometries.

Abstract

Global simulations of electromagnetic turbulence, collisionless tearing modes, and Alfven Eigenmodes in the presence of fast particles are carried out using the gyrokinetic particle-in-cell codes ORB5 (E. Lanti et al, Comp. Phys. Comm., ${\bf 251}$, 107072 (2020)) and EUTERPE (V. Kornilov et al, Phys. Plasmas, ${\bf 11}$, 3196 (2004)) in tokamak and stellarator geometries. Computational feasibility of simulating such complex coupled systems is demonstrated.