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T: Fachverband Teilchenphysik
T 108: Niederenergie-Neutrinophysik/Suche nach Dunkler Materie 3
T 108.5: Talk
Tuesday, February 28, 2012, 17:50–18:05, ZHG 102
Detector development and background estimation for the observation of Coherent Neutrino Nucleus Scattering (CNNS) — •Achim Gütlein, Christian Ciemniak, Franz von Feilitzsch, Jean-Côme Lanfranchi, Lothar Oberauer, Walter Potzel, Sabine Roth, Stefan Schönert, Moritz von Sivers, Raimund Strauß, Stefan Wawoczny, Michael Willers, and Andreas Zöller — Technische Universität München, Physik-Department, E15
The Coherent Neutrino Nucleus Scattering (CNNS) is a neutral current process of the weak interaction and is thus flavor independent. A low-energetic neutrino scatters off a target nucleus. For low transferred momenta the wavelength of the transferred Z0 boson is comparable to the diameter of the target nucleus. Thus, the neutrino interacts with all nucleons coherently and the cross section for the CNNS is enhanced.
To observe CNNS for the first time we are developing cryogenic detectors with a target mass of about 10 g each and an energy threshold of less than 0.5 keV. The current status of this development will be presented as well as the estimated background for an experiment in the vincinity of a nuclear power reactor as a strong neutrino source.
This work has been supported by funds of the Deutsche Forschungsgemeinschaft DFG (Transregio 27: Neutrinos and Beyond), the Excellence Cluster (Origin and Structure of the Universe) and the Maier-Leibnitz-Laboratorium (Garching).