  By taking advantage of the trace approximation, one can gain an enormous
computational advantage when solving for the global turbulent transport of
impurities. In particular, this makes feasible the study of non-Maxwellian
transport coupled in radius and energy, allowing collisions and transport to be
accounted for on similar time scales, as occurs for fast ions. In this work, we
study the fully-nonlinear ITG-driven trace turbulent transport of locally
heated and injected fast ions. Previous results indicated the existence of
MeV-range minorities heated by cyclotron resonance, and an associated density
pinch effect. Here, we build upon this result using the t3core code to solve
for the distribution of these minorities, consistently including the effects of
collisions, gyrokinetic turbulence, and heating. Using the same tool to study
the transport of injected fast ions, we contrast the qualitative features of
their transport with that of the heated minorities. Our results indicate that
heated minorities are more strongly affected by microturbulence than injected
fast ions. The physical interpretation of this difference provides a possible
explanation for the observed synergy when NBI heating is combined with ICRH.
Furthermore, we move beyond the trace approximation to develop a model which
allows one to easily account for the reduction of anomalous transport due to
the presence of fast ions in electrostatic turbulence.
