Würzburg 2018 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 11: Sun and Heliosphere III - Particles

EP 11.6: Vortrag

Donnerstag, 22. März 2018, 16:30–16:45, BSZ - Pabel HS

GEANT4 simulation of the Helios E6 - Proton contamination of relativistic electron measurements — •M. Hörlöck, J. Marquardt, and B. Heber — Christian-Albrechts-Universität zu Kiel, Germany

HELIOS A and HELIOS B were launched on December 10, 1974 and January 15, 1976, respectively. The two almost identical space probes were sent into ecliptic orbits around the Sun. The Kiel experiment, E6 is one of three particle detectors aboard HELIOS that allows to study the flux of energetic particles in the energy range from 1.3 MeV/nucleon to above 1000 MeV/nucleon for ions and from 0.3 to 8 MeV for electrons. A GEANT 4 simulation has been set up to calculate the response functions for protons and electrons in the energy range from 1 to 60 MeV and from 50 keV to 10 MeV, respectively. Due to the detector design there is substantial contamination of protons in the electron measurements that is quantified in this contribution. A method for correcting the electron time flux profiles will be presented and applied to a set of solar energetic particle events.