Accurate computation of higher multipole components of electrostatic and magnetic deflectors with the first-order FEM

Bohumila Lencova; Michal Lenc

doi:10.1117/12.255513

25 October 1996 Accurate computation of higher multipole components of electrostatic and magnetic deflectors with the first-order FEM

Bohumila Lencova, Michal Lenc

Author Affiliations +

Proceedings Volume 2858, Charged-Particle Optics II; (1996) https://doi.org/10.1117/12.255513
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

The first order finite element method allows an accurate computation of multipole components of electrostatic and magnetic fields. The paper presents an analytical expression of the first, the third and the fifth harmonic component of electrostatic deflectors defined on an electrostatic box and for magnetic deflectors made of straight or tapered saddle coils or straight toroidal coils in air. The axial field functions are compared with those computed with the first order finite element method for the same geometry, with a very good agreement of the results.

Citation Download Citation

Bohumila Lencova and Michal Lenc "Accurate computation of higher multipole components of electrostatic and magnetic deflectors with the first-order FEM", Proc. SPIE 2858, Charged-Particle Optics II, (25 October 1996); https://doi.org/10.1117/12.255513

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