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Upgrade of a laboratory X-ray diffractometer to extend its operating range towards soft energies

  • The optical properties of X-ray mirror samples are commonly measured using diffractometers based on laboratory sources; like the Bede D1 diffractometer operating at INAF-OAB. This instrument can generate a collimated X-ray beam up to 60 keV, even though the most interesting energy region for x-ray astronomy applications is usually below 10 keV. In the softest part of this range (below 6 keV), high X-ray absorption in air hinders a full and precise characterization of optical components. In this work, we present an upgrade of the Bede D1 diffractometer that extends the operative range of the instrument below 6 keV; this is done by maximizing the flux at lowest energies and by reducing absorption by means of a helium-rich atmosphere. The upgraded instrument will be used for the tests of X-ray mirrors with innovative soft X-ray coatings, with potential application to the next generation X-ray telescopes (such as ATHENA and eXTP).
Metadaten
Author:Giocomo Rivolta, Stefano Basso, Marta Civitani, Vincenzo Cotroneo, Thorsten DöhringORCiD, Willy-Leopold Michler, Giovanni Pareschi, Daniele Spiga, Manfred StollenwerkORCiD
URL:https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12181/121814S/Upgrade-of-a-laboratory-x-ray-diffractometer-to-extend-its/10.1117/12.2629940.short
DOI:https://doi.org/doi: 10.1117/12.2629940
ISSN:0277-786X
Parent Title (English):Proceedings of SPIE
Publisher:SPIE
Document Type:Conference Proceeding
Language:English
Year of Completion:2022
Date of first Publication:2022/08/31
Creating Corporation:Osservatorio Astronomico di Brera
Contributing Corporation:TH Aschaffenburg
Release Date:2022/09/07
Tag:ATHENA; X-ray; mirror; reflectivity; refractometer
GND Keyword:Röntgenspiegel; Diffraktometer
Volume:2022
Issue:12181
Page Number:7
First Page:121814S-1
Last Page:121814s-7
Urheberrecht:1
Institutes:Fakultät Ingenieurwissenschaften / Studiengänge / Internationales Technisches Vertriebsmanagement (Bachelor)
research focus :Materials / Material Testing & Sensor Technology
Licence (German):Keine Lizenz - es gilt das deutsche Urheberrecht
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