Adapt FFTPoissonSolver to 2D
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matt-frey commented
In GitLab by @carl_j on Jul 12, 2023, 12:44
Adapt FFTPoissonSolver to support a Hockney-Eastwood Poisson solve on a 2D grid.
This is part of adding "2.5D" solver to IPPL where the space charge potentials from a bunch which is long compared with its transverse size is computed. In a 2.5D solver the bunch is divided into 2D slices, the 2D potential from each slice is computed and applied to the particles. A 1D space charge potential is computed based on the longitudinal line density of the bunch and applied to the particles resulting in an energy/longitudinal momentum kick.
More details here:
20230712_review_presentation.pdf