SH036-0007
The Energetic Particle Detector (EPD) Electron-Proton Telescope (EPT) on Solar Orbiter: In-flight calibration and background correction of science data
Monday, 14 December 2020
Poster
Daniel Pacheco1, Alexander Kollhoff1, Robert F Wimmer-Schweingruber1, Johan Lauritz Freiherr von Forstner1, Christoph Terasa1, Robert Elftmann1, Sebastian Boden1, Sandra Eldrum1, Zigong Xu2, Lars Berger3, Javier Rodriguez-Pacheco4, George C Ho5 and The SolO EPD team, (1)University of Kiel, Institute for Experimental and Applied Physics, Kiel, Germany, (2)University of Kiel, Institute of Experimental and Applied Physics, Kiel, Germany, (3)Institute for Experimental and Applied Physics (IEAP), Christian-Albrechts-University of Kiel, Kiel, Germany, (4)University of Alcalá, Space Research Group, Alcalá de Henares, Spain, (5)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
Abstract:
Solar Orbiter was launched in February 2020 carrying the most complete set of in-situ and remote sensing instruments, for the study of the Sun and the heliosphere. The Energetic Particle Detector (EPD) on board of Solar Orbiter was switched on on 28 February 2020 and, since then, it has provided us with measurements of the energetic particles traveling through the inner heliosphere. The EPD suite is composed of a set of different sensors measuring electrons, protons and ions in a wide range of energies.
The Electron-Proton Telescope (EPT) was designed to measure electrons and ions with energies of 35-4000keV and 45-7000keV respectively. By utilizing the so-called magnet/foil-technique, EPT is capable of measuring energetic particles with a high temporal and energy resolution while obtaining directional information from its four different fields of view. Although EPT is well suited for the study of solar energetic particle events, instrumental effects such as the contamination of EPT data products by GCR particles need to be understood for a correct interpretation of the data.
We will present our current understanding of the background and calibration of EPT based on the data gathered during the first 10 months of the first orbit of Solar Orbiter.
