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  Structural analysis of Athena WFI Large Detector Array

Frank, J., Beitler, C., Pietschner, D., Strecker, R., Antonelli, V., Plattner, M., et al. (2020). Structural analysis of Athena WFI Large Detector Array. In Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray. doi:10.1117/12.2560668.

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 Creators:
Frank, Jintin1, Author              
Beitler, Christian1, Author              
Pietschner, Daniel1, Author              
Strecker, Rafael1, Author              
Antonelli, Valeria2, Author              
Plattner, Markus2, Author              
Meidinger, Norbert1, Author              
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1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              
2MPI for Extraterrestrial Physics, Max Planck Society, ou_159888              

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 Abstract: The WFI instrument is designed for high-resolution X-ray imaging and spectroscopy with a large field of view. A movable mirror focuses the X-rays onto the focal plane detectors of the WFI. For design development of the instrument, structural analysis is performed from early project phases. The WFI project has entered phase B and the preliminary design is evolving towards a more detailed design including interface definitions. The focal plane of WFI consists of two detectors: Large Detector Array (LDA) and Fast Detector (FD). The LDA assembly is used for main observation modes, whereas FD is for very bright point sources. The complexity of the LDA design is due to the fact that it has to be compliant to contradictory requirements. Its sensors have to be thermally decoupled from the structure, but with a high stiffness to avoid relative displacement and deformation of sensitive components, e.g. bond wires. The LDA has an active area that is as large as ≈14x14 cm2 but the thermal gradient across it shall be below 2.5-3K. The LDA is optimized with respect to mechanical requirements for launch loads and operational conditions in space. In order to minimize mass while withstanding thermo-mechanical, static and dynamic loads, various design studies have been carried out. With the aim to develop a design, which meets all structural and functional requirements, various structural analyses are performed. In this paper, the structural design studies and the preliminary analysis results of the WFI Large Detector Array are presented

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Language(s): eng - English
 Dates: 2020-12-13
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1117/12.2560668
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Title: Conference on Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray / SPIE Astronomical Telescopes + Instrumentation Conference
Place of Event: ELECTR NETWORK
Start-/End Date: 2020-12-14 - 2020-12-18

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Title: Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray
Source Genre: Proceedings
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Pages: - Volume / Issue: 11444 Sequence Number: 114443W Start / End Page: - Identifier: -