Evolution of integrated radial ICL profiles with input ICL fraction, redshift, and half-light radius computed from one of the simulated galaxy cluster catalogs. The typical 3σ detection limit (computed from an image containing only CCD noise) in our MegaCam type images is also displayed as a dashed black line. The half-light radius r_e controls the concentration of the profile, and the redshift z and the input ICL fraction f_ICL control its amplitude, with a stronger effect from f_ICL. Because the detection of ICL is strongly background limited, the outskirts (or the totality in some cases) of the profiles fall below the detection limit and are lost. This loss is estimated in Sect. 5 (also see Fig. 6).