Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 72: Niederenergie Neutrinophysik IV

T 72.3: Talk

Wednesday, March 11, 2015, 17:20–17:35, I.13.71 (HS 28)

Calorimetric measurement of the SOX anti-neutrino source for sterile neutrino search — •Konrad Altenmüller, Matteo Agostini, Laszlo Papp, and Stefan Schönert for the Borexino collaboration — Physik Department and Excellence Cluster Universe, Technische Universität München, Germany

A thermal calorimeter is under development to measure with <1% accuracy the heat release of the Cerium anti-neutrino source for the SOX experiment, which is looking for eV-scale sterile neutrinos. The heat release is proportional to the source activity and thus to the emitted neutrino flux, which is an important parameter of the experiment. The calorimeter design is based on a copper heat exchanger mounted around the source with integrated water lines for the heat extraction. Heat loss through conduction and radiation is minimized by suspending the set-up through Kevlar ropes and inserting it inside a thermalized vacuum tank with radiation shields. The device is currently being assembled and tested at TUM in Garching.
This work is supported by the DFG cluster of excellence “Origin and Structure of the Universe”.