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HK: Fachverband Physik der Hadronen und Kerne
HK 29: Nuclear Astrophysics 2
HK 29.1: Group Report
Tuesday, March 24, 2015, 17:00–17:30, K/HS2
Underground nuclear astrophysics at the Dresden Felsenkeller — •Daniel Bemmerer1, Thomas E. Cowan1,2, Stefan Gohl1,2, Marcel Grieger1,2, Christoph Ilgner1, Arnd R. Junghans1, Stefan Müller1, Tobias P. Reinhardt2, Stefan Reinicke1,2, Bernd Rimarzig1, Marko Röder1,2, Konrad Schmidt1,2, Ronald Schwengner1, Klaus Stöckel1,2, Tamás Szücs1, Marcell P. Takács1,2, Andreas Wagner1, Louis Wagner1,2, and Kai Zuber2 — 1Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden — 2Technische Universität Dresden
Favored by the low background underground, accelerator-based experiments are an important tool to study nuclear astrophysics reactions involving stable charged particles. This technique has been used with great success at the 0.4 MV LUNA accelerator in the Gran Sasso laboratory in Italy. However, the nuclear reactions of helium and carbon burning and the neutron source reactions for the astrophysical s-process require higher beam energies, as well as the continuation of solar fusion studies. As a result, NuPECC strongly recommended the installation of one or more higher-energy underground accelerators. Such a project is underway in Dresden. A 5 MV Pelletron accelerator is currently being refurbished by installing an ion source on the high voltage terminal, enabling intensive helium beams. The preparation of the underground site is funded, and the civil engineering project is being updated. The science case, operational strategy and project status will be reported. – Supported by NAVI (HGF VH-VI-417) and by DFG (TU Dresden Institutional Strategy, "support the best").