Reeves, Katherine2010-05-212010-05-212010-04-21https://hdl.handle.net/11299/62338Additional contributors: Peter Zweber; Daniel Cronin-Hennessy (faculty mentor).BES-III is an electron-positron detector in Beijing, China. I analyzed the lateral shower shape of photons in the electromagnetic calorimeter. My study showed how simulated data correlate with real data. I studied the differences for various energy photons, differences based on locations of where the shower originated, and the effects of how material in front of the calorimeter effects these shower measurements.en-USInstitute of TechnologySchool of Physics and AstronomyPresentation