  To calculate nonlinear transport of space charge dominated beam in 6D phase
spaces, a computer code package LEADS-v5 (Linear and Electrostatic Accelerator
Dynamics Simulations) has been developed. The codes calculate particle motions
in the beam transport systems consisting of electrostatic and magnetic focusing
lenses, ion analyzers, multipoles and RF accelerating structures. The nonlinear
forces of external electric/magnetic fields are analyzed by the Lie algebraic
method, and the space charge forces are obtained by the particle in cell (PIC)
scheme. In the codes, Uniform and Gaussian particle distributions can be chosen
to generate randomly the particle initial coordinates. The optimization
procedures are provided to make the beam optics designs reasonable and fast.
Graphically displays of calculated results are provided.
