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Soft proton flux on ATHENA focal plane and its impact on the magnetic diverter design

Jacquey, Christian; Piro, Luigi; Molendi, Silvano +11 more

The experience gained with the current generation of X-ray telescopes like Chandra and XMM-Newton has shown that low energy "soft" protons can pose a severe threat to the possibility to exploit scientific data, reducing the available exposure times by up to 50% and introducing a poorly reproducible background component. These soft protons are pres…