Speaker
Sergio Arguedas Cuendis
(CERN)
Description
The CERN axion solar telescope (CAST) is well known for its searches of axions coming from the sun using different types of X-ray detectors. However, in recent years the CAST Collaboration has shifted its focus from solar axions to relic axions with two conceptually new detectors:
The Relic Axions Detector Exploratory Setup (RADES) which is based on a microwave filters and tunable microwave resonant cavities (CAPP-CAST). Both setups take advantage of the 9 Tesla field, produced by the CAST magnet and are installed parasitically to the solar axion search setup.
The RADES detector geometry consists of 5 or 6 copper plated stainless steel sub-cavities joined by rectangular irises resonating at approximately 8.4 GHz, while the CAPP-CAST detector consists of 4 identical tunable rectangular cavities resonating at 5.2 - 5.5GHz. In this presentation the advantages of these type of cavity geometries to resonate at frequencies above 5 GHz and at the same time grow in volume are going to be discussed. Furthermore, the measurements of the electromagnetic properties of both setups are going to be presented. Finally, the preliminary results of the data taken during 2018 with both detectors are going to be shown. The results show the potential of this type of filter to reach QCD axion sensitivity when exploiting the 9 meter long bore of the CAST dipole magnet.
Primary author
Sergio Arguedas Cuendis
(CERN)
