Ray-tracing simulations of a UV/VUV beamline for the PolFEL free electron laser

Martyna Wardzińska; Henryk Fiedorowicz; Andrzej Bartnik; Tomasz Fok; Przemysław Wachulak; Łukasz Węgrzyński; Karolina Szamota-Leandersson; Jacek Krzywiński; Paweł Krawczyk; Mateusz Majszyk; Peter Baumgärtel; Frank Siewert; Andrey Sokolov

doi:10.1117/12.2663447

12 December 2022 Ray-tracing simulations of a UV/VUV beamline for the PolFEL free electron laser

Martyna Wardzińska, Henryk Fiedorowicz, Andrzej Bartnik, Tomasz Fok, Przemysław Wachulak, Łukasz Węgrzyński, Karolina Szamota-Leandersson, Jacek Krzywiński, Paweł Krawczyk, Mateusz Majszyk, Peter Baumgärtel, Frank Siewert, Andrey Sokolov

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Proceedings Volume 12502, 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 1250206 (2022) https://doi.org/10.1117/12.2663447
Event: 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2022, Wojanow, Poland

Abstract

The PolFEL free electron laser, currently under construction at the National Centre for Nuclear Research in Poland, will generate a beam of coherent electromagnetic radiation in the ultraviolet (UV) spectral range with a wavelength of about 150 nm to 300 nm, in the form of several hundred fs pulses, energy up to 50 μJ, and repetition rate of 50 kHz. Vacuum ultraviolet (VUV) radiation beam in the wavelength range from 50 nm to 100 nm will be obtained by selecting the third harmonic using an absorption filter. The optical system of the UV/VUV beamline consists of two plane M1 and M2 mirrors and one focusing ellipsoidal M3 mirror. The radiation produced in the laser hits on the M1 mirror at a grazing incidence angle of 5°. After reflection from the M1 mirror, the beam falls on the M2 mirror at an angle of 17°, which directs the beam to the ellipsoidal M3 mirror, focusing the beam at the image plane at the second focal point of the ellipsoid. The M1 mirror is placed behind the 3 m-thick concrete wall in a hutch separated from the experimental hall by a 1.6 m-thick concrete wall. The optical properties of the beamline were tested by ray-tracing simulations using the RAY-UI software, the results of which are presented in the paper.

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Martyna Wardzińska, Henryk Fiedorowicz, Andrzej Bartnik, Tomasz Fok, Przemysław Wachulak, Łukasz Węgrzyński, Karolina Szamota-Leandersson, Jacek Krzywiński, Paweł Krawczyk, Mateusz Majszyk, Peter Baumgärtel, Frank Siewert, and Andrey Sokolov "Ray-tracing simulations of a UV/VUV beamline for the PolFEL free electron laser", Proc. SPIE 12502, 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 1250206 (12 December 2022); https://doi.org/10.1117/12.2663447

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KEYWORDS

Mirrors

Free electron lasers

Optical simulations

Ultraviolet radiation

Vacuum ultraviolet

X-rays

Monochromators

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