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We search for ultra-high energy photons by analyzing geometrical propertiesof shower fronts of events registered by the Telescope Array surface detector.By making use of an event-by-event statistical method, we derive upper limitson the absolute flux of primary photons with energies above 10^19, 10^19.5 and10^20 eV based on the first three years of data taken.

Upper limit on the flux of photons with energies above 10^19 eV using the Telescope Array surface detector