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T: Fachverband Teilchenphysik

T 39: Methods of astroparticle physics III

T 39.6: Vortrag

Dienstag, 31. März 2020, 18:15–18:30, L-3.002

Reconstruction of Supernova Burst Neutrinos with JUNO — •Thilo Birkenfeld, Max Büsken, Shivani Ramachandran, Achim Stahl, Christopher Wiebusch, and Sivaram Yogathasan — III. Physikalisches Institut B, RWTH Aachen

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20kt liquid scintillator neutrino detector, which is currently under construction in China. It will lead the next generation of liquid scintillator neutrino experiments with its large target mass and total photo coverage of about 77%. A major physics goal is determining the neutrino mass hierarchy from the measurement of reactor electron anti-neutrinos with unprecedented precision. To accomplish this goal it is designed to have an energy resolution of <3% at 1MeV and an energy non-linearity better than 1% in the MeV region. Due to its long lifetime JUNO is a promising observatory for measuring the neutrino burst from a galactic supernova explosion. High statistics and the excellent energy reconstruction will unravel the details of the neutrino-driven supernova mechanism. As the flux of such a burst comprises all different neutrino flavours, the expected signal consists of different detection channels, which include the inverse beta decay, elastic scattering on protons and electrons and various interactions with carbon. Separating these channels is crucial for a flavour dependent analysis. In this talk a method for distinguishing the different channels and reconstructing the low energy events from elastic scattering is presented.