Charm Photoproduction Results from E691

We present results on the photoproduction of 10000 charmed particles from the 108 recorded triggers of Fermilab experiment E691. The total cross-section for the photoproduction of D° and D+ particles (and antiparticles) for x F >0.2 is measured to be 3.88±0.06±0.40 µb/Be nucleus at =145 GeV. We have also measured the relative production of different charmed particles, their p T 2 and X F distributions and the energy dependence of the total charm cross-section. The mean p T 2 , is 1.16±0.04 GeV2/c2 and the ratio of charm cross-sections at 200 GeV and 100 GeV is 1.96±0.24. Results of fits to the XF distribution are also reported.