Tracking of charged particles in the central region of the BGO-OD experiment using a cylindrical MWPC

The BGO-OD experiment at the ELSA accelerator facility at Bonn investigates the mechanisms of photoproduction of mesons from nucleons. One focus is associated strangeness production, i.e. γp → (KY)⁺ or γn → (KY)⁰. Generally the strange-particle decays yield multiple charged particles in the final state, as for example ΛK⁰ → (pπ^-) (π⁺π^-). The capability to reconstruct precise tracks and vertices of reactions and decays is therefore crucial. At BGO-OD, the charged particle trajectories are reconstructed using a cylindrical MWPC, which is surrounding the target cell inside the BGO calorimeter. The reconstruction procedure, as well as its impact on the identification of reaction channels will be presented.