Optimization of the Calorimeters and Coincidence Trigger in the SBS GEP Experiment

The SBS collaboration’s GEP experiment at Hall A of Jefferson Lab intends to measure the Sachs electric form factor of the proton up to 12 GeV² via the recoil polarization method. A two-arm coincidence trigger was used for selection of events with the expected kinematic characteristics of elastic electron-proton scattering. Due to the extremely high luminosity required to measure the necessary observables with sufficient statistics, an efficient trigger was crucial to the optimization of the experiment. An overview of the work done to implement the coincidence trigger through use of simulations in GEANT4, as well as work done to maintain and calibrate the 1,656-channel Electron Calorimeter and the 288-channel Hadron Calorimeter for optimal use in the coincidence trigger.