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Geant4 simulation of the residual background in the ATHENA wide field imager from protons deflected by the charged particle diverter
X-ray telescopes opened up a new window into the high-energy universe. However, the last generation of these telescopes encountered an unexpected problem: their optics focused not only x-rays but low-energy (so called soft) protons as well. These protons are very hard to model and can not be distinguished from x-rays. …