  Massive photon-like particles are predicted in many extensions of the
Standard Model. They have interactions similar to the photon, are vector
bosons, and can be produced together with photons. The PADME experiment
proposes a search for the dark photon ($A'$) in the $e^+e^- \to \gamma A'$
process in a positron-on-target experiment, exploiting the positron beam of the
DA$\Phi$NE linac at the Laboratori Nazionali di Frascati, INFN. In one year of
running a sensitivity in the relative interaction strength down to $10^{-6}$ is
achievable, in the mass region from 2.5 MeV $<M_{A'}<$ 22.5 MeV. The proposed
experimental setup and the analysis technique is discussed.
