Speaker
Description
Ion source extraction modelling is commonly performed using IBSIMU, which couples non-linear sheath equations with a Poisson solver and self-consistently includes particle space charge. This approach has been widely applied using measured or fitted plasma parameters. In some ion sources, the extraction lens uses of boron nitride (BN) liners, which can enhance plasma density through electron donation. As a dielectric, BN modifies the electric potential distribution, potentially altering extraction optics in ways not captured by standard models. In this work, we investigate the impact of ceramic extraction lenses on ion beam formation. Plasma parameters are obtained via optimization by fitting simulations to experimental data. Using these parameters, we study how variations in plasma potential influence beam properties and compare trends with experiment.
| Classification | MC7: Beam extraction and transport |
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