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1 August 2021 Characterization of ADP crystals for soft x-ray optics of the Beam Expander Testing X-ray facility (BEaTriX)
Claudio Ferrari, Riccardo Lolli, Bianca Salmaso, Giovanni Pareschi, Gianpiero Tagliaferri, Stefano Basso, Daniele Spiga, Enrico Giro
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Proceedings Volume 11837, Advances in X-Ray/EUV Optics and Components XVI; 118370G (2021) https://doi.org/10.1117/12.2595143
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States
Abstract
A new type of x-ray facility, the Beam Expander Testing x-ray facility (BEaTriX), has been designed and is now under construction at INAF– Osservatorio Astronomico di Brera (Merate, Italy) to perform the acceptance tests of the silicon pore optics modules of the ATHENA X-ray telescope. Crystals of high perfection and large dimensions are needed in order to obtain a wide beam (20 × 6 cm2) with an X-ray divergence <0.5 arcseconds and a x-ray energy purity DeltaE/E<10-5. To generate x-ray diffracted beams at an X-ray energy of 1.49 keV, ammonium dihydrogen phosphate (ADP) crystals have been considered among other possible choices, because of their reported crystal quality and because they can be grown at sufficiently large size. In the present paper, the results of the characterization of crystalline quality and lattice planarity of a 20 × 20 × 2 mm3 ADP sample are reported.
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Claudio Ferrari, Riccardo Lolli, Bianca Salmaso, Giovanni Pareschi, Gianpiero Tagliaferri, Stefano Basso, Daniele Spiga, and Enrico Giro "Characterization of ADP crystals for soft x-ray optics of the Beam Expander Testing X-ray facility (BEaTriX)", Proc. SPIE 11837, Advances in X-Ray/EUV Optics and Components XVI, 118370G (1 August 2021); https://doi.org/10.1117/12.2595143
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KEYWORDS
Crystals
X-rays
Laser crystals
Beam expanders
X-ray characterization
X-ray optics
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