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Abstract: Accurate modeling and mitigation of coherent synchrotron radiation (CSR) is essential for the generation and transport of high brightness beams. While many simulation tools that model CSR effects have been developed, these typically neglect at least one of the following: (1) transverse size/emittance (i.e a 1D approximation), (2) entry/exit wakes in the drift section, (3) shielding by conducting structures in the vacuum chambers or (4) self-consistency between the evolving beam distribution and the generated radiation. This talk will go over a new approach that achieves fully 3D, self-consistent CSR calculation along with entry/exit wakes and shielding. The beam is represented using a small number of smooth shape functions, which keeps the memory footprint manageable and simplifies the retardation condition encountered in the Green's function integral. Analysis of the physics of CSR (and mitigation through multi-parameter optimization) will be discussed, including the transition from 1D to 3D effects and the interplay between the current profiles shapes and shielding.