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Manuscript Title: HERACLES, an event generator for ep interactions at HERA energies including radiative processes.
Authors: A. Kwiatkowski, H. Spiesberger, H.-J. Mohring
Program title: HERACLES V 4.0
Catalogue identifier: ACGE_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 69(1992)155
Programming language: Fortran.
Computer: IBM-3090.
Operating system: VMS.
Keywords: Particle physics, Elementary, Event simulation.
Classification: 11.2.

Nature of problem:
A Monte Carlo event generator simulating neutral and charged current ep interactions at HERA energies and beyond is described. The present version 4.0 of the generator optionally treats the ep scattering either by means of structure function parameterizations or on the basis of parton distribution functions in the framework of the quark-parton model. Single photon emission from the lepton line as well as self energy corrections and the complete set of one-loop weak corrections can be included. These corrections are sufficient to describe the cross section with an accuracy of a few percent or, if Q**2<= 2X10**3 GeV**2, of less than 1%.

Solution method:
Monte Carlo generator.

Running time:
Depending on the actual requirements (parameters, requested contributions, kinematical limits, initialization); typical example: 1000 radiative events/5 seconds CPU. For a more detailed discussion see section 6.