  In this paper we study a near-continuum dark matter model, in which dark
sector consists of a tower of closely spaced states with weak-scale masses. We
construct a five-dimensional model which naturally realizes this spectrum. The
dark matter is described by a bulk field, which interacts with the
brane-localized Standard Model sector via a Z portal. We then study collider
signatures of this model. Near-continuum dark matter states produced in a
collider undergo cascade decays, resulting in events with high multiplicity of
jets and leptons, large missing energy, and displaced vertices. A custom-built
Monte Carlo tool described in this paper allows for detailed simulation of the
signal events. We present results of such simulations for the case of
electron-positron collisions.
