Chemical Elements as Tracers of the Evolution of the Cosmos

HZDR - Felsenkeller (DE)

Felsenkeller underground laboratory (Dresden, Germany)


The Felsenkeller underground laboratory offers a 5 MV ion accelerator and a low-background counting facility.


The Felsenkeller underground laboratory is operated jointly by Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and TU Dresden. Shielded by 140 meters (water equivalent) of rock, it offers two experimental setups:

  • A 5 MV ion accelerator for high-intensity beams of 1H, 4He, and 12C ions. This allows sensitive measurements of radiative-capture reactions for nuclear astrophysics. 

  • A ultra-low-background 150% high-purity germanium detector in a passive and active shield, for activation measurements in nuclear astrophysics and other low-background radioactivity measurements.

Access to the ion accelerator is foreseen to be open to the scientific community free of charge, based on the recommendations of an independent international scientific advisory board.

The construction of the laboratory is complete since spring 2018, and the installation of accelerator and low-background germanium detector is expected to conclude in fall 2018.

A scientific description of the lab is included in the following publication:

D. Bemmerer et al., Jap. Phys. Soc. Conf. Proc. 14, 021106 (2017), arXiv:1609.05819

Linked ChETEC institutions

Web page

ChETEC contact person

  • Daniel Bemmerer (
  • Kai Zuber (