Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 40: Eingeladene Vorträge 2

T 40.2: Semi-Invited Talk

Tuesday, March 10, 2015, 14:15–14:45, K.11.24 (HS 33)

JUNO: Determination of the neutrino mass hierarchy using reactor neutrinos — •Björn Wonsak — Hamburg University, Inst. Exp.Phys., Hamburg, Germany

The Jiangmen Underground Neutrino Observatory (JUNO) is a medium-baseline reactor neutrino experiment located in China. Its aim is to determine the neutrino mass hierarchy at more than 3 sigma significance after six years of data taking by using a 20kt liquid scintillator detector. To achieve this goal, an energy resolution of less than 3%/√E is necessary, creating strict requirements on the detector design and the liquid scintillator. Moreover, JUNO will be the only experiment in the near future able to measure the solar mixing parameters with a precision of better than 1%. This is at the same level as our current knowledge on flavour mixing in the quark sector, marking an important milestone of neutrino physics. In addition, supernova neutrinos, geo-neutrinos, sterile neutrinos as well as solar and atmospheric neutrinos can be studied. JUNO was approved in 2013 and the construction of the underground facility started early this year. In this talk the status of the experiment and its prospects will be discussed.