The employed PhD student will do theoretical and experimental research in the areas of classical and quantum electrodynamics, electrodynamics of media, accelerator physics, quantum optics and particle physics. The emphasis will be on quantum and coherent effects in radiation and scattering of charged particles in EM fields and matter: Cherenkov radiation, transition radiation, Smith–Purcell radiation, nonlinear Compton scattering, undulator radiation, etc. The employee will develop theoretical models, and carry out modeling in a software package (Mathlab, Mathematica, etc.). It is also planned that the PhD student will participate in measurement experiments with beams of electron microscopes and particle accelerators, and in the future (starting from the second or third year of PhD school) will play a leading role in such experiments. If the applicant for the PhD position has theoretical education, it will be necessary to master the basic skills of experimental work. If the applicant has an experimental background, it will be required to study the theory to carry out calculations and modeling. In both cases, the research team will provide support and guidance.