Abstract
Numerical simulation of physical processes in the electron-optical system of a DUET accelerator was carried out using the ERA-DD code. The calculations were made on adaptive quasi-structured grids developed by the authors. A mathematical model for the emission plasma surface deformable when solving the problem is proposed. In this model, the problem is considered in a two-dimensional axisymmetric approximation and the front of the electron entrance to the computational domain is represented as a set of circular arcs connected by necks. In order to increase the accuracy of the calculations, it is proposed to divide the multi-scale extended domain into two subdomains and alternately solve self-consistent problems in the subdomains using the Schwarz alternating method. The beams are simulated by the method of current tubes, and the electric field potential is calculated by the finite volume method. The obtained characteristics of the beam are compared with experimental data. It is shown that for the operating parameters of the beam source, its losses on the accelerator components are minimal and can be caused primarily by the imperfect alignment of the holes in the mask and the support grid, as well as by deviations of electron beams generated by the structures located on the periphery of the emission electrode.
Similar content being viewed by others
References
M. S. Vorobyov, N. N. Koval, and S. A. Sulakshin, “An Electron Source with a Multiaperture Plasma Emitter and Beam Extraction into the Atmosphere,” Prib. Tekh. Eksp., No. 5, 112–120 (2015) [Instrum. Exp. Tech. 58 (5), 687–695 (2015).
V. Astrelin and M. Vorobyov, “Numerical Model of EOS with Large-Area Plasma Cathode with Mesh Stabilization of the Emission Plasma Boundary,” J. Phys., Conf. Ser. 1115, 022001 (2018); DOI: https://doi.org/10.1088/1742-6596/1115/2/022001.
V. T. Astrelin, A. N. Kozyrev, V. M. Sveshnikov, and M. S. Vorobyov, “Numerical Simulation of EOS with a Large-Area Plasma Cathode with Mesh Stabilization of the Emission-Plasma Boundary,” in Proc. of the 6th Int. Congr. on Energy Fluxes and Radiation Effects (EFRE2018), Tomsk, September 16–22, 2018 (Tomsk Polytech. Univ., Tomsk, 2018), p. 37.
D. O. Belyaev, A. N. Kozyrev, and V. M. Sveshnikov, “ERA-DD Application Software Package for Solving Two-Dimensional Boundary Value Problems on Quasi-Structured Grids,” Vestn. Novosib. Gos. Univ., Ser. Inform. Tekhnol. 8(1), 3–11 (2010).
N. N. Koval, E. M. Oks, Yu. S. Protasov, and N. N. Semashko, Emission Electronics (Bauman Moscow State Tech. Univ., Moscow, 2009) [in Russian].
V. M. Sveshnikov, O. N. Petrovich, and L. V. Vshivkova, “Simulation of a Moving Boundary in Plasma Electron Sources,” IEEE Trans. Plasma Sci. 41(8), Part 2, 2166–2170 (2013).
V. A. Syrovoi, Introduction to the Theory of Intense Beams of Charged Particles (Energoatomizdat, Moscow, 2004) [in Russian].
A. N. Kozyrev and V. M. Sveshnikov, “On the Construction of Two-Dimensional Locally Modified Quasi-Structured Grids and Their Application to the Solution of Boundary-Value Problems in Domains with a Curvilinear Boundary,” Vestn. Yuzhn.-Ural. Gos. Univ., Ser. Vychisl. Mat. Inform. 6(2), 5–21 (2017).
V. P. Ilyin, Numerical Methods for Solving Problems of Electrophysics (Nauka, Moscow, 1985) [in Russian].
V. Sveshnikov, “Increased-Accuracy Numerical Simulation of Electron-Optical Systems with Space Charge,” Nucl. Instrum. Meth. Phys. Res. A, No. 645, 307–309 (2011).
A. N. Kozyrev and B. M. Sveshnikov, “Numerical Algorithms for Calculating the Space Charge, Generated by Intense Beams of Charged Particles,” Prikl. Fiz., No. 1, 30–35 (2018).
S. K. Godunov, Equations of Mathematical Physics (Nauka, Moscow, 1979) [in Russian].
I. V. Alyamovskii, Electron Beams and Electron Guns (Sov. Radio, Moscow, 1966) [in Russian].
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.T. Astrelin, M.S. Vorobyov, A.N. Kozyrev, V.M. Sveshnikov.
Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 60, No. 5, pp. 3–12, September–October, 2019.
Rights and permissions
About this article
Cite this article
Astrelin, V.T., Vorobyov, M.S., Kozyrev, A.N. et al. Numerical Simulation of the Operation of a Wide-Aperture Electron Gun with a Grid Plasma Emitter and Beam Output into the Atmosphere. J Appl Mech Tech Phy 60, 785–792 (2019). https://doi.org/10.1134/S0021894419050018
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0021894419050018