Effect of Outer Polepiece Shroud Geometry on Bipolar Lens and Studying its Properties
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Abstract
In this paper, several innovative designs of axially symmetrical magnetic dipole lenses, which are bipolar lenses with different geometries, were designed, where the outer pole arm indicated by the symbol was changed (hp) with current density (σ = 6 A/mm2) and after designing them, the engineering variables were studied in terms of magnetic properties, then the optical properties were studied in terms of aberrations, i.e. the coefficient of spherical aberration and the coefficient of chromatic aberration, where it was found that there were slight changes in the corresponding spherical aberration As for chromatic aberration and focal length, no noticeable changes occurred.
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