(Left) The time averaged beam energy U(x) for energy bands 7 − 20 keV, 20 − 50 keV and 50 − 100 keV (blue, orange and green respectively) for simulation with collisional transport (dashed lines, Beam Only) and additional wave-particle interactions (solid lines, Beam & Waves). (Right) The beam energy loss rate, normalised by the beam energy, for the same energy bands and simulations shown in the left panel.