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Proceedings Paper

Development and production of a multilayer-coated x-ray reflecting stack for the Athena mission
Author(s): S. Massahi; D. D. M. Ferreira; F. E. Christensen; B. Shortt; D. A. Girou; M. Collon; B. Landgraf; N. Barriere; M. Krumrey; L. Cibik; S. Schreiber
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Paper Abstract

The Advanced Telescope for High-Energy Astrophysics, Athena, selected as the European Space Agency's second large-mission, is based on the novel Silicon Pore Optics X-ray mirror technology. DTU Space has been working for several years on the development of multilayer coatings on the Silicon Pore Optics in an effort to optimize the throughput of the Athena optics. A linearly graded Ir/B4C multilayer has been deposited on the mirrors, via the direct current magnetron sputtering technique, at DTU Space. This specific multilayer, has through simulations, been demonstrated to produce the highest reflectivity at 6 keV, which is a goal for the scientific objectives of the mission. A critical aspect of the coating process concerns the use of photolithography techniques upon which we will present the most recent developments in particular related to the cleanliness of the plates. Experiments regarding the lift-off and stacking of the mirrors have been performed and the results obtained will be presented. Furthermore, characterization of the deposited thin-films was performed with X-ray reflectometry at DTU Space and in the laboratory of the Physikalisch-Technische Bundesanstalt at the synchrotron radiation facility BESSY II.

Paper Details

Date Published: 18 July 2016
PDF: 10 pages
Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 99055P (18 July 2016); doi: 10.1117/12.2233519
Show Author Affiliations
S. Massahi, DTU Space (Denmark)
D. D. M. Ferreira, DTU Space (Denmark)
F. E. Christensen, DTU Space (Denmark)
B. Shortt, European Space Research and Technology Ctr. (Netherlands)
D. A. Girou, cosine Research B.V. (Denmark)
M. Collon, cosine Research B.V. (Netherlands)
B. Landgraf, cosine Research B.V. (Netherlands)
N. Barriere, cosine Research B.V. (Netherlands)
M. Krumrey, Physikalisch-Technische Bundesanstalt (Germany)
L. Cibik, Physikalisch-Technische Bundesanstalt (Germany)
S. Schreiber, Physikalisch-Technische Bundesanstalt (Germany)

Published in SPIE Proceedings Vol. 9905:
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Tadayuki Takahashi; Marshall Bautz, Editor(s)

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