Momentum distributions of electrons at z ≈ 0.39 in our five runs (i.e. ≈760 Myr after the jet injection), for the three different acceleration or cooling models (colours). The dashed lines are referred to the cluster region r ≤ 300 kpc while the solid line (here overlapping with the first) are for electrons at any distance from the cluster centre. The lowest power run B is at the top and the highest power run F is at the bottom.