Optical simulations for the laboratory-based expanded and collimated x-ray beam facility BEaTriX
Date Issued
2019
Author(s)
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Bavdaz, Marcos
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Pelliciari, Carlo
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Burwitz, Vadim
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Ferreira, Ivo
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Sanchez del Rio, Manuel
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Wille, Eric
Description
The development of the BEaTriX facility is funded by the ESA contract No. 4000123152/18/NL/BW, “Advanced and Compact X-ray Test facility for the ATHENA SPO module”, the AHEAD consortium activities financed by the EU Horizon 2020 grant No. 654215, and INAF internal funds.
Abstract
The construction of BEaTriX, the Beam Expander Testing X-ray facility, is underway at INAF-OAB (Osservatorio Astronomico di Brera). This laboratory-based X-ray source was designed to generate a broad (170 mm x 60 mm), uniform, and collimated X-ray beam, with a residual divergence of 1.5 arcsec HEW at either 1.49 keV and 4.51 keV. The main scientific driver for BEaTriX is represented by the opportunity to routinely calibrate the modular elements of the ATHENA (ESA) X-ray telescope, based on the silicon pore optics (SPO) technology. Nevertheless, the application domain of BEaTriX is potentially much wider (e.g., X-ray tomography). BEaTriX comprises a microfocus source of X-rays, followed by an optical chain including a collimating mirror, crystal monochromators, and an asymmetric beam expander. The final beam collimation and homogeneity relies on the optical quality of the optical components (X-ray source dimension, mirror polishing, crystal lattice regularity) and on their mutual alignment. In order to determine the most critical parameters, focus the development efforts, and establish specifications, a set of optical simulations has been built. Our paper describes the simulation tool we developed to this specific aim, and discusses the results achieved in terms of manufacturing and alignment tolerances.
Coverage
Advances in Laboratory-based X-Ray Sources, Optics, and Applications VII
All editors
Murokh, Alex; Spiga, Daniele
Series
Volume
11110
Start page
111100E
Conferenece
Advances in Laboratory-based X-Ray Sources, Optics, and Applications VII
Conferenece place
San Diego, California
Conferenece date
11-15 August, 2019
Issn Identifier
0277-786X
Rights
open.access
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