The simulation of DarkLight experiment at ARIEL (TRIUMF)

The DarkLight experiment aims to search for a new boson in the dark sector via electron scattering from a heavy target for evidence of new physics. Of particular interest is the mass range between 10 to 20MeV, motivated by anomalies resulting from excess of dilepton production from Be-8 and He-4. The experiment has been proposed to use the 30-50MeV beam of the ARIEL facility at TRIUMF on a Tantalum target along with two magnetic spectrometers to detect the e+e- pair. In the talk, I will discuss the simulations for the magnetic and detector system in GEANT4, and the generators used to estimate signal, irreducible and random coincidence background.