  Studies with mesoscopic superconducting materials have made significant
advances on the last decades. One of the applications of such systems is in
devices for single photon and single electron detectors. However, depending on
the geometry of these systems, crowding current effects take place and, as a
consequence, the total critical current could decrease which facilitates the
penetration of vortices. This effect could also be responsible for a variety of
penetration morphologies of flux avalanches in macroscopic samples. Thus, in
this work we used the time-dependent Ginzburg-Landau theory to study the
crowding current effects in mesoscopic superconducting systems with an array of
antidots. It is demonstrated that the profile of the currents is influenced by
the antidots, i.e., in the vertices of the antidots the intensity of the
currents increases. On the other hand, the profile of the currents in between
the antidots is more affected in the smaller system which presents closer
antidots.
