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[Andreas Adelmann <andreas.adelmann AT psi.ch>]

Dear Colleagues please attend the dry run of Matthias Toggenweilers ETH Master Thesis.

Date: 25. October 2011 in WBGB 019 at 14.00

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

Abstract
The engine 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 usage. A popular integrator is the Boris-Buneman method, also present in the Object Oriented Parallel 
Accelerator Library (OPAL) at the Paul Scherrer Institut. Until now, constant time steps are utilized to carry the simulation forward in time. This thesis investigates 
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.

Thanks for attending 
Andreas

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Dr. sc. math. Andreas (Andy) Adelmann
Staff Scientist
Paul Scherrer Institut WLGB/132 CH-5232 Villigen PSI
Phone Office: xx41 56 310 42 33 Fax: xx41 56 310 31 91
Phone Home: xx41 62 891 91 44
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The more exotic, the more abstract the knowledge, 
the more profound will be its consequences.
Leon Lederman 
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