  We explore the phenomenology of a model of monopolium based on an
electromagnetic dual formulation of Zwanziger and lattice gauge theory. The
monopole is assumed to have a finite-sized inner structure based on a 't
Hooft-Polyakov like solution, with the magnetic charge uniformly distributed on
the surface of a sphere. The monopole and anti-monopole potential becomes
linear plus Coulomb outside the sphere, analogous to the Cornell potential
utilised in the study of quarkonium states. Discovery of a resonance feature in
the diphoton channel as well as in a higher multiplicity photon channel would
be a smoking gun for the existence of monopoles within this monopolium
construction, with the mass and bound state properties extractable. Utilising
the current LHC results in the diphoton channel, constraints on the monopole
mass are determined for a wide range of model parameters. These are compared to
the most recent MoEDAL results and found to be significantly more stringent in
certain parameter regions, providing strong motivation for exploring higher
multiplicity photon final state searches.
