FOXTAIL swMATH ID: 22273 Software Authors: Tholerus, Emmi; Johnson, Thomas; Hellsten, Torbjörn Description: FOXTAIL: modeling the nonlinear interaction between Alfvén eigenmodes and energetic particles in tokamaks. FOXTAIL is a new hybrid magnetohydrodynamic-kinetic code used to describe interactions between energetic particles and Alfvén eigenmodes in tokamaks with realistic geometries. The code simulates the nonlinear dynamics of the amplitudes of individual eigenmodes and of a set of discrete markers in five-dimensional phase space representing the energetic particle distribution. Action-angle coordinates of the equilibrium system are used for efficient tracing of energetic particles, and the particle acceleration by the wave fields of the eigenmodes is Fourier decomposed in the same angles. The eigenmodes are described using temporally constant eigenfunctions with dynamic complex amplitudes. Possible applications of the code are presented, e.g., making a quantitative validity evaluation of the one-dimensional bump-on-tail approximation of the system. Expected effects of the fulfillment of the Chirikov criterion in two-mode scenarios have also been verified. Homepage: http://www.sciencedirect.com/science/article/pii/S0010465517300073 Related Software: Cited in: 1 Publication Standard Articles 1 Publication describing the Software, including 1 Publication in zbMATH Year FOXTAIL: modeling the nonlinear interaction between Alfvén eigenmodes and energetic particles in tokamaks. Zbl 1376.76082Tholerus, Emmi; Johnson, Thomas; Hellsten, Torbjörn 2017 Cited by 2 Authors 1 Hellsten, Torbjörn 1 Tholerus, Emmi Cited in 1 Serial 1 Computer Physics Communications Cited in 2 Fields 1 Numerical analysis (65-XX) 1 Fluid mechanics (76-XX) Citations by Year