Speaker
Description
Simulation study is more and more essential in the design and study of a modern e+e- collider. Existing tools often simplify the lattice model in beam-beam or collective effects study. GPU provide the feasibility to implement element-by-element tracking with large amount of particles and limited computing resources. New e+e- collider need more self-consistent simulation to predict the beam stability or machine performance quantitatively. We have developed a GPU-based parallel code (APES-T) which make it feasible to use 1 million macro-particles per bunch in element-by-element tracking besides beam-beam interaction and other effects. Some applications at superKEKB and BEPCⅡ has started using the new codes. Very initial results will be presented.