Typ
Artikel in einem Journal
Gebiet
Anderes Gebiet
Autor
V. Anastassopoulos, …, K. Desch, J. Kaminski, C. Krieger, S. Schmidt et al (für die CAST-Kollaboration)
Titel
New CAST Limit on the Axion-Photon Interaction
Datum
2017-05
Reportnummer
Nature Phys. 13 (2017) 584-590
Kurzfassung
During 2003-2015, the CERN Axion Solar Telescope (CAST) has searched for a→γ conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward the Sun. In its final phase of solar axion searches (2013-2015), CAST has returned to evacuated magnet pipes, which is optimal for small axion masses. The absence of a significant signal above background provides a world leading limit of gaγ<0.66×10−10GeV−1 (95% C.L.) on the axion-photon coupling strength for ma≲0.02 eV. Compared with the first vacuum phase (2003--2004), the sensitivity was vastly increased with low-background x-ray detectors and a new x-ray telescope. These innovations also serve as pathfinders for a possible next-generation axion helioscope.
Journal
doi:10.1038/nphys4109