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EP: Fachverband Extraterrestrische Physik

EP 5: Postersitzung I

EP 5.3: Poster

Dienstag, 14. März 2017, 16:30–18:00, GW2 2.OG

GEANT 4 Simulation of the Solar Electron Proton Telescope aboard the STEREO mission — Stefan Wraase, •Bernd Heber, Stephan Böttcher, Nina Dresing, Andreas Klassen, and Patrick Kühl — Christian-Albrechts-Universität, 24118 Kiel, Germany

The Solar Electron and Proton Telescope (SEPT), one of four instruments of the Solar Energetic Particle (SEP) suite for the IMPACT investigation, is designed to provide the three-dimensional distribution of energetic electrons and protons with good energy and time resolution. It consists of two dual double-ended magnet/foil particle telescopes which cleanly separate and measure electrons in the energy range from 30-400 keV and protons from 60 - 7000 keV. Anisotropy information on a non spinning spacecraft is provided by the two separate telescopes: SEPT-E looking in the ecliptic plane along the Parker spiral magnetic field both towards and away from the Sun, and SEPT-NS looking vertical to the ecliptic plane towards North and South. The dual set-up refers to two adjacent sensor apertures for each of the four view directions: one for protons, one for electrons. In this contribution a simulation of SEPT utilizing GEANT 4 has been set up with an extended instrument model in order to calculate improved response functions of the four different telescopes. This will help to understand and correct instrumental effects in the measurements.