Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 78: Niederenergie-Neutrinophysik II

T 78.3: Talk

Wednesday, March 2, 2016, 17:15–17:30, VMP9 SR 07

Light yield and timing of the JUNO detector as function of scintillator transparency — •Wilfried Walter Depnering for the JUNO collaboration — Johannes Gutenberg - Universität & EC PRISMA, Mainz, Deutschland

In the last years, large-volume liquid scintillator detectors have made important contributions to low-energy neutrino physics. One of these future neutrino detectors is JUNO with its primary goal to determine the neutrino mass hierarchy. To be able to reach that goal a resolution of at least 3% at a neutrino energy of 1 MeV is needed. For this reason, at least 1200 photoelectrons need to be registered within the photomultipliers at the verge of the detector, independent of their creation point. Therefore, a high light yield and high transparency of the liquid scintillator are crucial. This talk is about a study investigating the expected amount of photoelectrons considering different absorption- and scattering lengths for the used liquid scintillator LAB. In addition to that, the impact of these optical parameters on the rise time of the emission profile is examined, determining the time resolution of event reconstruction.