FOCUS CPM SOFTWARE FOR TRAJECTORY ANALYSIS OF REAL AXIALLY SYMMETRIC ELECTROSTATIC MIRRORS: METHODS AND ALGORITHMS
DOI:
https://doi.org/10.31489/2022No3/91-96Keywords:
electron optics, paraxial optics, electron mirror, numerical methods, trajectory analysisAbstract
The problem of studying the influence of electron mirrors design features, in particular, the gaps between
the electrodes on their electron-optical characteristics is solved. A method to solve the problem that combines the
advantages of analytical paraxial and numerical approaches is described. FOCUS CPM software developed by
the authors of the work that implements the method described is presented. Calculation accuracy is estimated
using the example of a three-electrode mirror. A focus position as a function of gap width between cylindrical
electrodes is calculated and analyzed.
References
The field and particle trajectory simulator. Industry standard charged particle optics software. Available at: https://simion.com (Apr19, 2022).
CPO “BEM” Charged Particle Optics Simulation Software. Available at: https://www.sisweb.com/software/cpo.htm (Apr19, 2022).
Trubitsyn A., Grachev E., Gurov V., Bochkov I., Bochkov V. CAE «FOCUS» for Modelling and Simulating Electron Optics Systems: Development and Application. Proceedings of SPIE. 2017. Vol. 10250, pp. V-1 – V-7.
Berger C. Design of rotationally symmetrical electrostatic mirror for time-of-flight mass spectrometry. Journal of Applied Physics. 1983. Vol. 54, pp. 3699-3703.
Bimurzaev S., Aldiyarov N., Sautbekova Z. High Dispersive Electrostatic Mirrors of Rotational Symmetry with the Third Order Time-of-Flight Focusing by Energy. Technical Physics. 2020. Vol. 65, pp. 1150–1155.
Trubitsyn A.A. Calculation of the Singular Integrals Arising in the Boundary-Element Method for the Dirichlet Problem. Comp. Maths Math. Phys. 1995. Vol.35, No.4, pp. 421-428.
Burden R.L., Faires J.D. Numerical Analysis. 7th Ed. USA, Boston: Brooks/Cole, 2000, pp. 174-191.
Gurov V.S., Saulebekov A.O., Trubitsyn A.A. Analytical, Approximate-Analytical and Numerical Methods in the Design of Energy Analyzers. In Advances in Imaging and Electron Physics. Hawkes, Ed. London: Academic Press, 2015, 209p.
Plies E.Electron optics of low-voltage electron beam testing and inspection. Part I: Simulation tools. Advances in Imaging and Electron Physics. 2018. Vol. 205, pp. 139 – 267.
Yavor M. Optics of Charged Particle Analyzers. In Advances in Imaging and Electron Physics. P.W. Hawkes, Ed. London: Academic Press, 2009, 375 p.
Mirsaleh-Kohan N., Robertson W. D., Compton R. N. Electron ionization time-of-flight mass spectrometry: Historical review and current applications. Mass Spectrometry Reviews. 2020. Vol. 27, No. 3, pp. 237–285.
Trubitsyn A.A. A Correlation Method of Search for Higher-Order Angular Focusing. Technical Physics. 2001. Vol.46, pp. 630-631.