Numerical modeling of even harmonic generation in XFELs with planar and helical undulators

Kalitenko, A. M.

doi:10.1016/j.nima.2022.166718

Cited by 3 publications

(2 citation statements)

References 35 publications

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“…In this paper, a neural network for analyzing FEL configurations has been built and trained. The training took place on the data of 3D numerical simulation [15], the radiation in the FEL amplifiers was simulated without noise. As a result of data preparation and neural network training, optimal data transformations (physical normalization, data logarithmization, scaling, etc.)…”

Section: Introductionmentioning

confidence: 99%

Phenomenological model of a free-electron laser using machine learning

Kalitenko

2023

Phys. Scr.

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Free electron lasers (FELs) are used in various fields of scientific research. Programs and methods are created for their design and calibration. The development of machine learning has opened up opportunities for new methods of research and data analysis. This paper presents a technique for building a neural network for analyzing FEL parameters. We collected numerical simulation data of about 2000 configurations, found the optimal architecture and trained a neural network that can analyze several FEL configurations depending on the undulator and the electron beam parameters in a short time. This technique is capable of simulating more complex systems (FEL with helical undulators, etc.) and can be applied to facilities for their optimization.

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Section: Introductionmentioning

confidence: 99%

Phenomenological model of a free-electron laser using machine learning

Kalitenko

2023

Phys. Scr.

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“…In this article, we have studied methods for higherharmonics suppression in tapered FELs with a previously developed program [11]. In all simulations, we use the three-dimensional steady-state numerical simulations [18].…”

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Analysis of the higher-harmonics radiation suppression in tapered free-electron lasers with phase shifters

Kalitenko

2023

EPL

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The article presents a study of the higher harmonics radiation suppression in tapered free-electron lasers (FELs) with phase shifters. To increase the power and efficiency of the FEL, tapering is used -- a decrease in the parameter K along the laser axis. Undulator tapering is one of the methods for designing multi-terawatt X-ray FELs (XFELs), which are necessary for research in the field of non-linear optics. In the FELs, in addition to the fundamental harmonic there are also higher harmonics of the radiation field. In this article, we propose methods to suppress the higher harmonics of radiation to improve the quality of radiation for the study of the higher harmonic generation in crystals and etc. Our method can be transferred to other system as well.

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Studies of self-design taper algorithms for free-electron lasers with planar and helical undulators

Kalitenko¹

2022

Results in Optics

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Numerical modeling of even harmonic generation in XFELs with planar and helical undulators

Cited by 3 publications

References 35 publications

Phenomenological model of a free-electron laser using machine learning

Phenomenological model of a free-electron laser using machine learning

Analysis of the higher-harmonics radiation suppression in tapered free-electron lasers with phase shifters

Studies of self-design taper algorithms for free-electron lasers with planar and helical undulators

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