  An analysis of prompt photon production in high energy nuclear collisions at
the LHC energy regime is performed within the parton saturation picture taking
into account the updated phenomenological color dipole models. The results are
confronted with the measurements made by the ALICE, ATLAS, and CMS experiments
in terms of photon transverse momentum at different rapidity bins. As a result,
we show that the prompt photon production exhibits distinct scalings in $AA$
events associated to geometrical properties of the collision and can be
properly addressed in the color dipole formalism.
