Study of the Reaction γp → ηη'p

The motivation behind the GlueX experiment is to search for hybrid mesons. There is evidence for an exotic π₁(1600) that decays to η'π. The π₁(1600) should have an isoscalar partner, the η₁, that can be observed in the η'η channel. The preliminary analysis presented here considers photoproduction of the final state η'η which decays to 4γπ⁺π^-. The experiment uses a beam of linearly polarized photons with a peak near 9 GeV incident on a hydrogen target that produces these particles. General features of the data including mass spectra and data selection with a focus on removing backgrounds due to photon combinatorics will be shown.