Münster 2017 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 42: Nuclear Astrophysics III
HK 42.1: Gruppenbericht
Donnerstag, 30. März 2017, 14:00–14:30, F 33
Felsenkeller 5 MV underground ion accelerator: muon, neutron, and γ background and project status — •Daniel Bemmerer1, Francesca Cavanna1, Thomas E. Cowan1,2, Marcel Grieger1,2, Thomas Hensel1,2, Arnd R. Junghans1, Felix Ludwig1,2, Stefan E. Müller1, Bernd Rimarzig1, Stefan Reinicke1,2, Stefan Schulz1,2, Ronald Schwengner1, Klaus Stöckel1,2, Tamás Szücs1,3, Marcell P. Takács1,2, Andreas Wagner1, Louis Wagner1,2, and Kai Zuber2 — 1Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany — 2TU Dresden, Germany — 3MTA ATOMKI, Debrecen, Hungary
Motivated by the success of the world’s only underground ion accelerator, LUNA 0.4 MV in Italy, a project for a higher-energy underground accelerator is underway in Dresden. A 5 MV Pelletron accelerator with double charging chains and provision for intensive 1H+, 4He+, and 12C+ beams based on external and internal ion sources is currently being installed in the Felsenkeller underground site in Dresden. Civil construction work in Felsenkeller will be completed in August 2017. The nine Felsenkeller tunnels are shielded from cosmic rays by 45 m rock overburden, attenuating the background in radiation detectors. New data on the muon, neutron, and γ background in Felsenkeller will be shown, and used for a discussion on the feasibility of low-background experiments there. The new accelerator will be open for outside users, and its most important experimental capabilities will be summarized.