Beam Equilibrium Stability and Transport (BEST) Code

• Nonlinear Perturbative Particle Simulations:

  • Simulation noise is reduced significantly.

  • No waste of computing resource on something already known.

  • Moreover, make use of the known  to determine the unknown .

  • Study physics effects separately, as well as simultaneously.

  • Easily switched between linear and nonlinear operation.

• Some Computational Features:

  • Adiabatic field pusher for light particles (electrons).

  • Solves Maxwell's equations in cylindrical geometry. 

  • Written in Fortran 90/95 and extensively object-oriented. 

  • NetCDF data format for large-scale diagnostics and visualization. 

  • Achieved an average speed of 80 megaflops on IBM-SP (stage I) at NERSC.

  • The code has been parallelized using OpenMP and MPI.

• Simulation Results for Electron-Proton Two-Stream Instability

• Simulation Results for Eigenmodes in High Intensity Beams

• Simulation Results for Stable Beam Propagation