Optical design and performance simulations for the 1.49 keV beamline of the BEaTriX X-ray facility

D. Spiga, B. Salmaso, S. Basso, C. Pelliciari, C. Ferrari, R. Lolli, M. Ghigo, G. Sironi, G. Vecchi, V. Cotroneo, G. Pareschi, G. Tagliaferri, D. Sisana, V. Burwitz, S. Rukdee, G. Hartner, T. Müller, T. Schmidt, A. Langmeier, D. Della Monica FerreiraN. Gellert, S. Massahi, M. Bavdaz, I. Ferreira

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Abstract

The BEaTriX (Beam Expander Testing X-ray) facility, now operational at INAF-Brera Astronomical Observatory, will represent a cornerstone in the acceptance roadmap of Silicon Pore Optics (SPO) mirror modules, and will so contribute to the final angular resolution of the ATHENA X-ray telescope. By expansion and collimation of a microfocus X-ray source via a paraboloidal mirror, a monochromation stage, and an asymmetric crystal, BEaTriX enables the full-aperture illumination of an SPO mirror module with a parallel, monochromatic, and broad (140 mm ´ 60 mm) X-ray beam. The beam then propagates in a 12 m vacuum range to image the point spread function of the mirror module, directly on a focal plane camera. Currently the 4.51 keV beamline, based on silicon crystals, is operational in BEaTriX. A second beamline at 1.49 keV, which requires a separate paraboloidal mirror and organic crystals (ADP) for beam expansion, is being realized. As for monochromators, the current design is based on asymmetric quartz crystals. In this paper, we show the current optical design of the 1.49 keV beamline and the optical simulations carried out to predict the achievable performances in terms of beam collimation, intensity, and uniformity. In the next future, the simulation activity will allow us to determine manufacturing and alignment tolerances for the optical components. Additional presentation content can be accessed on the supplemental content page.
Original languageEnglish
Title of host publicationProceedings of SPIE
EditorsKyriaki Minoglou, Nikos Karafolas, Bruno Cugny
Number of pages9
Volume12777
Publication date2023
Chapter127773E
DOIs
Publication statusPublished - 2023
EventInternational Conference on Space Optics - Dubrovnik, Croatia
Duration: 3 Oct 20227 Oct 2022

Conference

ConferenceInternational Conference on Space Optics
Country/TerritoryCroatia
CityDubrovnik
Period03/10/202207/10/2022
SeriesProceedings of SPIE - The International Society for Optical Engineering
Volume12777
ISSN0277-786X

Keywords

  • BEaTriX
  • X-ray test facility
  • Optical design
  • Optical simulations
  • Beam expander
  • ADP

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