Electron Optics

Modelling SIMION’s accuracy for hemispherical deflector analyzers using a spherical capacitor

by Frederik Spiegelhalder

T.J.M. Zouros, F.M. Spiegelhalder and David J. Manura

Benchmark evaluations of the accuracy of SIMION 3D, a finite difference ion optics package, have been performed for... more Benchmark evaluations of the accuracy of SIMION 3D, a finite difference ion optics package, have been performed for Kepler
orbits in a spherical capacitor (SC) or ideal (1/r2 field) hemispherical deflector analyzer (HDA). SIMION trajectory radius and time-of-flight (TOF) errors are investigated for various system configurations. A simple theoretical model in which the effect of
the electrode modeling inaccuracies is treated as a perturbation on the particle orbit is also provided that explains, predicts, and
even corrects the radius and TOF errors over the central region of any HDA © 2008 Elsevier B.V. All rights reserved.