  Beam Delivery Simulation (BDSIM) is a program that simulates the passage of
particles in a particle accelerator. It uses a suite of standard high energy
physics codes (Geant4, ROOT and CLHEP) to create a computational model of a
particle accelerator that combines accurate accelerator tracking routines with
all of the physics processes of particles in Geant4. This unique combination
permits radiation and detector background simulations in accelerators where
both accurate tracking of all particles is required over long range or over
many revolutions of a circular machine, as well as interaction with the
material of the accelerator.
