The LHC Computing Grid Project (LCG)

	Define the requirements and a validation procedure for the physics processes as needed by the LHC experiments.  Processes should include electromagnetic, hadronic, and the various backgrounds.
	The requirements for the physics models and the energy range they should cover should be addressed
	Provide guidelines on performance, memory, and speed
	Study the requirements for integrating the simulation engines (i.e. Geant 4, Fluka etc.) in the application programs. Topics to be addressed should include :  mechanisms for specifying and configuring the physics processes mechanisms for interfacing to the physics generators mechanisms for keeping track of MCtruth information mechanisms for specifying the detector geometry mechanisms for outputting event data  support for general simulation services such as transport mechanisms, shower parameterisations and for an inverse tracking and reconstruction package "a la GEANE" .  other issues related to interfacing to general services of the various software frameworks, such as event visualisation, job configuration, user interfaces etc.

2 months (Interim report: September 6th; Final report: October 4th)

Representatives from experiments. Appropriate experts should be invited to RTAG meetings, as required. 

ALICE Andreas Morsch, ATLAS Andrea Dell'Acqua, CMS Albert de Roeck, LHCb Witek Pokorski 

There are two specific issues that need addressing. The first is related to the requirements for, and validation of, the physics processes. The second is concerned with the architecture of the simulation programs, in particular the scope of the simulation engines (G4, Fluka,..) and how to interface them to other framework services. The RTAG is also requested to define the highest priority work which could be taken on by the LCG Applications team in this area