gefördert durch die
Deutsche Forschungsgemeinschaft

Logo DFG



GRK 2044
Physikalisches Institut
Albert-Ludwigs-Universität Freiburg
Hermann-Herder-Str. 3
79104 Freiburg

+49 761 203 5715

Klaus Desch - Axion search experiments: exploring the low-energy frontier

RTG Online seminar on Wednesday, July 22nd 2020

Axions are ultralight hypothetical particles originally postulated to explain the observed smallness of the neutron´s electric dipole moment and its connection the so-called strong CP-problem, i.e. the fact that QCD allows for CP violation while Nature apparently does not. Meanwhile it is clear that axions, and more generally axion-like particles (ALPs), may also serve as interesting candidates for the observed Dark Matter and may explain certain astrophysical anomalies. If axions exist, they are copiously produced in our Sun and may be detected through their small effective coupling to electro-magnetic fields. A promising approach is their conversion into soft X-ray photons in strong magnetic fields and subsequent detection.

In the talk, I will lay out the experimental scene of axion searches based on conversion and then focus on a new proposal, the International Axion Observatory (IAXO) and its smaller predecessor, BabyIAXO to be constructed at DESY in Hamburg. I will discuss the layout of the experiment, ongoing R&D towards its realisation and its sensitivity and discovery potential as well the time scale towards realisation.

Benutzerspezifische Werkzeuge