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Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 24: Astroteilchenphysik

HK 24.4: Vortrag

Mittwoch, 21. März 2012, 15:00–15:15, RW 3

48Sc as a Calibration Source for the SNO+ Experiment — •Axel Boeltzig, Nuno Barros, Felix Krüger, Valentina Lozza, Laura Neumann, Belina von Krosigk, and Kai Zuber — TU Dresden, Germany

SNO+ (Sudbury Neutrino Observatory Plus Scintillator) is the successor of the SNO experiment, and currently under construction near Sudbury, Canada. Located in a mine 2000 m underground (equivalent to a shielding of about 6000 m of water), SNO+ will be a low-background experiment studying different aspects of neutrinos.

Several sources will be employed for the detector’s calibration, which is scheduled to start in mid-2013. One of the sources under development at TU Dresden uses the γ rays following the β decay of 48Sc. The sum of the γ energies for the main decay branch is close to the Q value of the double beta decay of 150Nd, which is planned to be measured in the second phase of SNO+.

Due to the half life of only 43.67(9) h, 48Sc has to be produced shortly before the calibration. Safety, radiopurity and cleanliness are further important issues for the application of a source in a low-background experiment like SNO+. The design of the source, its production and the current status of its development will be presented.

This work is supported by the German Research Foundation (DFG).

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