  A synthetic Fast-Ion Loss Detector (FILD) and an imaging Heavy Ion Beam Probe
(i-HIBP) have been implemented in the 3D hybrid kinetic-magnetohydrodynamic
code MEGA. First synthetic measurements from these two diagnostics have been
obtained for neutral beam injection (NBI) driven Alfv\'en Eigenmode (AE)
simulated with MEGA. The synthetic fast-ion losses show a strong correlation
with the AE amplitude. This correlation is observed in the phase-space,
represented in coordinates toroidal canonical momentum and energy. Fast-ion
losses and the energy exchange diagrams of the confined population are
connected with lines of constant E' , a linear combination of E and P{\phi} .
First i-HIBP synthetic signals also have been computed for the simulated AE,
showing displacements in the strikeline of the order of around 1 mm, above the
expected resolution in the i-HIBP scintillator of approximately 100 {\mu}m.
