MINEO, TERESATERESAMINEOLOTTI, SimoneSimoneLOTTIMOLENDI, SILVANOSILVANOMOLENDIGHIZZARDI, SIMONASIMONAGHIZZARDI2020-09-162020-09-1620170922-6435http://hdl.handle.net/20.500.12386/27425Soft protons constitute an important source of background in focusing X-ray telescopes, as Chandra and XMM-Newton experience has shown. The optics in fact transmit them to the focal plane with efficiency similar to the X-ray photon one. This effect is a good opportunity to study the environment of the Earth magnetosphere crossed by the X-ray satellite orbits, provided that we can link the spectra detected by the instruments with the ones impacting on the optics. For X-ray photons this link has the form of the so-called response matrix that includes the optics effective area and the energy redistribution in the detectors. Here we present a first attempt to produce a proton response matrix exploiting ray-tracing and GEANT4 simulations with the final aim to be able to analyse XMM-Newton soft proton data and link them to the external environment. If the procedure is found to be reliable, it can be applied to any future X-ray missions to predict the soft particles spectra impacting on the focal plane instruments.STAMPAenArticle10.1007/s10686-017-9548-z2-s2.0-85026799279000419984100004https://link.springer.com/article/10.1007%2Fs10686-017-9548-z2017ExA....44..287MFIS/05 - ASTRONOMIA E ASTROFISICA