Speaker
Description
Recently, Lawson et al. (2019) proposed a plasma haloscope, based on metamaterials for the search of axions. In previous plasma haloscopes, the size of resonant cavities is limited due to the Compton wavelength of axion, making it impractical to scale detector sizes to search for higher-mass axions. However, the proposed metamaterial based detector has the potential of scanning through a range of axion masses as a tunable artificial plasma frequency can be attained by changing the wire spacing of metamaterial.
At Stockholm University, we are leading the experimental efforts for the Axion Longitudinal Plasma Haloscope (ALPHA) Consortium. Motivated by the design for resonator cavity by Rustam et al. (2022), we have designed, manufactured and studied different types of resonators that can be easily assembled and disassembled unlike the earlier designs, with plasma frequencies in the 10-20 GHz frequency range. We will share some of the promising results of the static smaller prototypes which have been optimized in terms of loss and quality factor of resonances and discuss future plans for developing a tunable prototype for axion detection.
