  We study the excitation function of the low-lying charmonium state:
$\Psi$(3686) in $\bar p$ Au collisions taking into account their in-medium
propagation. The time evolution of the spectral functions of the charmonium
state is studied with a BUU type transport model. We calculated the excitation
function of $\Psi$(3686) production and show that it is strongly effected by
the medium. The energy regime will be available for the PANDA experiment.
