GEANT-4: An Object oriented toolkit for simulation in HEP

This project will be a first attempt to re-design a major package of CERN software for an object-oriented environment. It is important that the product of this development can be continuously compared with the functionality provided by the current version of GEANT (3.21). We believe that htis approach will be a fundamental test of the suitability of the object-oriented approach for simulation in HEP, where performance is a crucial issue. It will contribute to the production of a general framework for the LHC off-line software to complement other R&D projects more focused on reconstruction and I/O.