PHOTOPRODUCTION OF MULTI-JET EVENTS AT HERA - A MONTE-CARLO SIMULATION

We study the regime of high-energy photoproduction, currently under ex ploration at the DESY ep collider, HERA. In particular we discuss the possible production of more than one pair of 'back-to-back' jets which may occur at reasonably high p(T) as a consequence of the high-parton -density regime opened up at HERA centre-of-mass energies. We describe the construction of a multi-jet event generator based upon leading-or der QCD perturbation theory and an eikonal formalism, and show that th e effect of multiple parton interactions on event shapes at HERA could indeed be significant.