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An important part of electromagnetic particle-in-cell (PIC) simulations is the time integration scheme. The large number of particles used in plasma simulation impose the usage of an efficient method with low memory consumption. A popular integrator is the Boris-Buneman method, also utilized in the Object Oriented Parallel Accelerator Library (OPAL) at the Paul Scherrer Institut. Until now, constant time steps are applied to carry the simulation forward in time. In this thesis we investigate whether adapting solely the global time step, used for moving all particles, can provide enhanced efficiency. We make an excursion into the world of adaptive methods and propose an adaptive variant of the Boris-Buneman method. First tests with a prototype implementation in OPAL show promising results, despite the rather simple way how the time step is adapted.

An adaptive time integration method for more efficient simulation of particle accelerators