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BE: Beschleunigerphysik

BE 11: Accelerator Physics Poster Session

BE 11.12: Poster

Mittwoch, 2. April 2014, 17:00–19:30, P4

A Poisson solver with various boundary conditions for simulation in particle accelerators — •Dawei Zheng, Gisela Pöplau, and Ursula van Rienen — Institut für Allgemeine Elektrotechnik, Fakultät für Informatik und Elektrotechnik, Universität Rostock, Rostock, Germany

Future technologies for particle acceleration need more precise numerical simulation tools to meet the tight requirements for beam quality. Therefore, beam dynamics studies play an important role in all phases of establishing new machines. The investigation of space charge fields of charged particle bunches and their interaction with electron or ions clouds poses an important task within these numerical simulations. Possible approaches to determine space charge fields are the particle-mesh method and the particle-particle method. Our software package MOEVE (MOEVE: Multigrid Poisson Solver for Non-Equidistant Tensor Product Meshes) uses multigrid algorithms for the computation of 3D space charge fields. Now, an additional fast 3D solver based on spectral decomposition of matrix will be integrated into MOEVE in order to meet recent facilities' demands. The solver is designed for various mixed boundary conditions, such as Dirichlet, Neumann, and Periodic. The implementation is based on fast Fourier transform and related fast trigonometric transforms, and it uses the state-of-the-art framework FFTW [*].

[*] M. Frigo and S.G. Johnson, FFTW, C program library, www.fftw.org