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ROPA007 |
Vlasov Simulations of Beams and Halo
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581 |
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- E. Sonnendrucker, M. Gutnic, M. Haefele, G. Latu
IRMA, Strasbourg
- J.-L. Lemaire
CEA/DIF/DPTA/SP2A, Bruyeres-le-Chatel
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Even though PIC simulations have proven an efficient tool for beam simulations for many years, they are subject to numerical noise which only decreases slowly when the number of particles is increased. Therefore other methods might be preferable, when one is interested in accurate simulations of high intensity beams especially in the low density part of phase space. We have been developing new methods based on the direct resolution of the Vlasov equation on a grid of phase space. In order for these methods to be efficient special care needs to be taken to optimize the number of necessary grid points. We shall describe two different approaches that are used to this aim: moving grid methods and wavelet based automatic grid refinement. Beam simulations in different configurations using direct Vlasov methods will be presented.
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