Hyper-velocity impact test and simulation of a double-wall shield concept for the Wide Field Monitor aboard LOFT

E. Perinati; M. Rott; A. Santangelo; S. Suchy; C. Tenzer; E. Del Monte; J.-W. den Herder; S. Diebold; M. Feroci; A. Rachevski; A. Vacchi; G. Zampa; N. Zampa

doi:10.1117/12.2054943

24 July 2014 Hyper-velocity impact test and simulation of a double-wall shield concept for the Wide Field Monitor aboard LOFT

E. Perinati, M. Rott, A. Santangelo, S. Suchy, C. Tenzer, E. Del Monte, J.-W. den Herder, S. Diebold, M. Feroci, A. Rachevski, A. Vacchi, G. Zampa, N. Zampa

Author Affiliations +

Proceedings Volume 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray; 914465 (2014) https://doi.org/10.1117/12.2054943
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The space mission LOFT (Large Observatory For X-ray Timing) was selected in 2011 by ESA as one of the candidates for the M3 launch opportunity. LOFT is equipped with two instruments, the Large Area Detector (LAD) and the Wide Field Monitor (WFM), based on Silicon Drift Detectors (SDDs). In orbit, they would be exposed to hyper-velocity impacts by environmental dust particles, which might alter the surface properties of the SDDs. In order to assess the risk posed by these events, we performed simulations in ESABASE2 and laboratory tests. Tests on SDD prototypes aimed at verifying to what extent the structural damages produced by impacts affect the SDD functionality have been performed at the Van de Graaff dust accelerator at the Max Planck Institute for Nuclear Physics (MPIK) in Heidelberg. For the WFM, where we expect a rate of risky impacts notably higher than for the LAD, we designed, simulated and successfully tested at the plasma accelerator at the Technical University in Munich (TUM) a double-wall shielding configuration based on thin foils of Kapton and Polypropylene. In this paper we summarize all the assessment, focussing on the experimental test campaign at TUM.

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E. Perinati, M. Rott, A. Santangelo, S. Suchy, C. Tenzer, E. Del Monte, J.-W. den Herder, S. Diebold, M. Feroci, A. Rachevski, A. Vacchi, G. Zampa, and N. Zampa "Hyper-velocity impact test and simulation of a double-wall shield concept for the Wide Field Monitor aboard LOFT", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 914465 (24 July 2014); https://doi.org/10.1117/12.2054943

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KEYWORDS

Particles

Sensors

Cameras

Plasma

Beryllium

Prototyping

Inspection

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