Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 83: Gamma astronomy II

T 83.6: Vortrag

Donnerstag, 18. März 2021, 17:20–17:35, Th

Event classification in Compton-Pair telescopes using Convolutional Networks — •Jan Lommler and Uwe Oberlack — Johannes Gutenberg-Universität Mainz

Low to medium energy gamma rays are shielded by the Earth's atmosphere and cannot be measured with on-ground facilities. Satellite based gamma-ray astronomy relies on Compton scatter and Pair creation as measurement channels. Among the biggest challenges are the poor signal to background ratio due to low signal fluxes from cosmic sources and the high background rates even in the comparatively moderate environment of Low Earth Orbits. An efficient event tagging reduces signal losses by preventing type-mismatching applications of reconstruction algorithms (e.g. performing a Compton reconstruction on a Pair event) and signal pollution (distinguishing events originating from background sources). We explore the feasibility of Deep Convolutional Neural Nets in the context of event classification for Compton-Pair telescopes on the example of the e-ASTROGAM design proposal.