Heidelberg 2007 – scientific programme

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T: Fachverband Teilchenphysik

T 601: Niederenergetische Neutrinos III

T 601.2: Talk

Friday, March 9, 2007, 17:05–17:20, INF 308 Gr. HS

Looking into the centre of a supernova with LENA — •Jürgen Winter, Franz von Feilitzsch, Marianne Göger-Neff, Teresa Marrodan Undagoitia, Lothar Oberauer, Walter Potzel, and Michael Wurm — Physik-Department E15, Technische Universität München, James-Frank-Straße, 85748 Garching

One of the goals of the future 50 kt liquid-scintillator detector LENA (Low Energy Neutrino Astronomy) is the detection of neutrinos and antineutrinos from a galactic core-collapse supernova, where one expects roughly 20,000 events within ∼10s.

Discriminating between 7 possible reaction channels, and thus being able to measure both flux and energy spectrum for different neutrino flavours, information on SN modelling and neutrino properties can be gained. An interesting feature is the possible observation of MSW effect and the earth matter effect in the antineutrino sector.

A key technique for the discrimination of the different reactions is spatial event reconstruction. Therefore, information on photon arrival time, light pattern and the position of ∼12,000 photomultipliers is considered.

This work is supported by funds of the DFG (Transregio 27: Neutrinos and Beyond), the Cluster of Excellence "Origin and Structure of the Universe" and the Maier-Leibnitz-Laboratorium (Garching).