Speaker
            
    Neil Cooper-Smith
        
            (Royal Holloway)
        
    Description
Presented is an outline of the current simulation options available for use in the ATLAS collaboration. Particular attention is given to the ATLAS fast simulation, ATLFAST. By default, ATLFAST does not account for particle losses due to the reconstruction process. Therefore, a set of parametrisations of the photon reconstruction efficiency, as seen in full simulation, have been incorporated into ATLFAST, and the results are demonstrated with H->gamma gamma events.
            Author
        
            
                
                
                    
                        Neil Cooper-Smith
                    
                
                
                        (Royal Holloway)