Design and advancement status of the Beam Expander Testing X-ray facility (BEaTriX)

D. Spiga; C. Pelliciari; B. Salmaso; L. Arcangeli; G. Bianucci; C. Ferrari; M. Ghigo; G. Pareschi; M. Rossi; G. Tagliaferri; G. Valsecchi; G. Vecchi; A. Zappettini

doi:10.1117/12.2238952

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12 October 2016 Design and advancement status of the Beam Expander Testing X-ray facility (BEaTriX)

D. Spiga, C. Pelliciari, B. Salmaso, L. Arcangeli, G. Bianucci, C. Ferrari, M. Ghigo, G. Pareschi, M. Rossi, G. Tagliaferri, G. Valsecchi, G. Vecchi, A. Zappettini

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Proceedings Volume 9963, Advances in X-Ray/EUV Optics and Components XI; 996304 (2016) https://doi.org/10.1117/12.2238952
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

The BEaTriX (Beam Expander Testing X-ray facility) project is an X-ray apparatus under construction at INAF/OAB to generate a broad (200´60 mm2), uniform and low-divergent X-ray beam within a small lab (6´15 m²). BEaTriX will consist of an X-ray source in the focus a grazing incidence paraboloidal mirror to obtain a parallel beam, followed by a crystal monochromation system and by an asymmetrically-cut diffracting crystal to perform the beam expansion to the desired size. Once completed, BEaTriX will be used to directly perform the quality control of focusing modules of large X-ray optics such as those for the ATHENA X-ray observatory, based on either Silicon Pore Optics (baseline) or Slumped Glass Optics (alternative), and will thereby enable a direct quality control of angular resolution and effective area on a number of mirror modules in a short time, in full X-ray illumination and without being affected by the finite distance of the X-ray source. However, since the individual mirror modules for ATHENA will have an optical quality of 3-4 arcsec HEW or better, BEaTriX is required to produce a broad beam with divergence below 1-2 arcsec, and sufficient flux to quickly characterize the PSF of the module without being significantly affected by statistical uncertainties. Therefore, the optical components of BEaTriX have to be selected and/or manufactured with excellent optical properties in order to guarantee the final performance of the system. In this paper we report the final design of the facility and a detailed performance simulation.

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D. Spiga, C. Pelliciari, B. Salmaso, L. Arcangeli, G. Bianucci, C. Ferrari, M. Ghigo, G. Pareschi, M. Rossi, G. Tagliaferri, G. Valsecchi, G. Vecchi, and A. Zappettini "Design and advancement status of the Beam Expander Testing X-ray facility (BEaTriX) ", Proc. SPIE 9963, Advances in X-Ray/EUV Optics and Components XI, 996304 (12 October 2016); https://doi.org/10.1117/12.2238952

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