The methods and codes employed in the US Heavy Ion Fusion program to simula
te the beams in an Integrated Research Experiments (IRE) facility and a Fus
ion driver are presented in overview. A new family of models incorporating
accelerating module impedance, multi-beam and self-magnetic effects is desc
ribed, and initial WARP3D particle simulations of beams using these models
are presented. Finally, plans for streamlining the machine-design simulatio
n sequence, and for simulating beam dynamics from the source to the target
in a consistent and comprehensive manner, are described. (C) 2001 Elsevier
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