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  • Open Access

Low-frequency radiation of a charged particle bunch on a double grid screen

Evgenii S. Simakov*, Andrey V. Tyukhtin, and Sergey N. Galyamin

  • *Contact author: e.simakov@spbu.ru
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Phys. Rev. Accel. Beams 29, 042901 – Published 17 April, 2026

DOI: https://doi.org/10.1103/33q5-wtc7

Abstract

We analyze the radiation of a charged particle bunch passing through two grids parallel to each other (the double grid screen). The grid is composed of thin conductors that form square cells and have galvanic contact at the cross points. It is assumed that the wavelengths under consideration are much greater than the cell size, and the latter is much greater than the wire thickness. In this approximation, the structure can be described analytically by the averaged boundary conditions. Asymptotic analysis of the electromagnetic field shows that the bunch generates cylindrical and spherical waves. In particular, it is demonstrated that the cylindrical ones are dominant in the area between the grids. It is important to note that the structure under consideration can be practically transparent to a bunch, which is quite promising, in particular, for developing new methods of nondestructive bunch diagnostics.

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Phys. Rev. Accel. Beams 29, 042901– Published 17 April, 2026
  • Received 27 November 2025
  • Accepted 18 March 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

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