  The fishbone-induced transport of alpha particles is computed for the ITER 15
MA baseline scenario, using the nonlinear hybrid Kinetic-MHD code XTOR-K. Two
limit cases have been studied, in order to analyse the characteristic regimes
of the fishbone instability : the weak kinetic drive limit and the strong
kinetic drive limit. In both those regimes, characteristic features of the n =
m = 1 fishbone instability are recovered, such as a strong up/down-chirping of
the mode frequency, associated with a resonant transport of trapped and passing
alpha particles. The effects of the n = m = 0 sheared poloidal and toroidal
plasma rotation are taken into account in the simulations. The shear is not
negligible, which implies that the fishbone mode frequency has a radial
dependency, impacting the wave-particle resonance condition. Phase space hole
and clump structures are observed in both nonlinear regimes, centered around
the precessional and passing resonances. These structures remains attached to
the resonances as the different mode frequencies chirp up and down. In the
nonlinear phase, the transport of individual resonant trapped particles is
identified to be linked to mode-particle synchronization. On this basis, a
partial mechanism for the nonlinear coupling between particle transport and
mode dominant down-chirping is proposed. The overall transport of alpha
particles inside out the q = 1 surface is of order 2-5% of the initial
population between the simulations. The loss of alpha power is found to be
directly equal to the loss of alpha particles.
