Felsenkeller 5 MV underground accelerator: Towards the Holy Grail of Nuclear Astrophysics 12C(α, γ)16O

Daniel Bemmerer; Thomas E. Cowan; Marcel Grieger; Sebastian Hammer; Thomas Hensel; Arnd R. Junghans; Martina Koppitz; Felix Ludwig; Stefan E. Müller; Bernd Rimarzig; Stefan Reinicke; Ronald Schwengner; Klaus Stöckel; Tamás Szücs; Marcell P. Takács; Steffen Turkat; Andreas Wagner; Louis Wagner; Kai Zuber

doi:10.1051/epjconf/201817801008

All issues

Volume 178 (2018)

EPJ Web Conf., 178 (2018) 01008

Abstract

Open Access

Issue		EPJ Web Conf. Volume 178, 2018 16^th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)


Article Number		01008
Number of page(s)		5
Section		Facilities
DOI		https://doi.org/10.1051/epjconf/201817801008
Published online		16 May 2018

EPJ Web of Conferences 178, 01008 (2018)
https://doi.org/10.1051/epjconf/201817801008

Felsenkeller 5 MV underground accelerator: Towards the Holy Grail of Nuclear Astrophysics ¹²C(α, γ)¹⁶O

Daniel Bemmerer¹^*, Thomas E. Cowan¹^,2, Marcel Grieger¹^,2, Sebastian Hammer¹^,2, Thomas Hensel¹^,2, Arnd R. Junghans¹, Martina Koppitz¹^,2, Felix Ludwig¹^,2, Stefan E. Müller¹, Bernd Rimarzig¹, Stefan Reinicke¹^,2, Ronald Schwengner¹, Klaus Stöckel¹^,2, Tamás Szücs¹, Marcell P. Takács¹^,2, Steffen Turkat², Andreas Wagner¹, Louis Wagner¹^,2 and Kai Zuber²

¹ Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany
² Technische Universität Dresden, Institut für Kern- und Teilchenphysik, 01069 Dresden, Germany

^* e-mail: d.bemmerer@hzdr.de

Published online: 16 May 2018

Abstract

Low-background experiments with stable ion beams are an important tool for putting the model of stellar hydrogen, helium, and carbon burning on a solid experimental foundation. The pioneering work in this regard has been done by the LUNA collaboration at Gran Sasso, using a 0.4 MV accelerator. The present contribution reviews the status of the project for a higher-energy underground accelerator in Felsenkeller, Germany. Results from γ-ray, neutron, and muon background measurements in the Felsenkeller underground site in Dresden, Germany, show that the background conditions are satisfactory.

Two tunnels of the Felsenkeller site have recently been refurbished for the installation of a 5MV high-current Pelletron accelerator. Civil construction work has completed in March 2018. The accelerator will provide intense, 50 μA, beams of ¹H⁺, ⁴He⁺, and ¹²C⁺ ions, enabling research on astrophysically relevant nuclear reactions with unprecedented sensitivity.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).

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