Institut für Astronomie und Astrophysik Abteilung Astronomie Sand 1, D-72076 Tübingen, Germany

Preprint 01/17

Updates on experimental grazing angle soft proton scattering

S. Diebold (1), S. Hanschke (1), E. Perinati (1), R. Smith (2), C. Tenzer (1), A. Santangelo (1), J. Jochum (3)

(1) Institute for Astronomy and Astrophysics, Kepler Center for Astro and Particle Physics, Eberhard Karls University, Sand 1, 72076 Tübingen, Germany
(2) Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
(3) Physics Institute, Kepler Center for Astro and Particle Physics, Eberhard Karls University, Auf der Morgenstelle 14, 72076 Tübingen, Germany

To be published in: Proceedings of SPIE, Id. 10397-33

Abstract. Astronomical X-ray observatories are exposed to various kinds of orbital radiation that has the potential to compromise observations and to degrade the performance of the instruments. Particularly the soft proton component with energies below 10 MeV poses a major source for observational background and particle-induced damages in solid-state detectors. In-orbit experience has proven that soft protons are funneled much more efficient through Wolter-type X-ray optics than expected from simulations. In order to improve and validate simulations and thus to enable a more realistic assessment of the soft proton flux near the focal plane of future X-ray telescopes, a series of grazing angle scattering experiments is being conducted at the University of Tübingen. In this contribution, the latest improvements of the experimental setup as well as preliminary results for the azimuthal scattering distribution are presented.
 
Key words: X-ray astronomy, astronomical instrumentation, Wolter-type optics, soft proton radiation, grazing angle scattering

Preprint (3,63 Mb PDF file including figures)

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