3D nonlinear perturbative particle simulations of two-stream collective processes in intense particle beams

Collective processes in intense charged particle beams described self-consi stently by the Vlasov-Maxwell equations are studied using a 3D multispecies nonlinear perturbative particle simulation method. The newly-developed Bea m Equilibrium Stability and Transport (BEST) code has been used to simulate the nonlinear stability properties of intense beam propagation, sm-face ei genmodes in a high-intensity beam, and the electron-proton (e-p) two-stream instability observed in the Proton Storage Ring (PSR). (C) 2000 Elsevier S cience B.V. All rights reserved.