Speaker
Description
So far, high frequency gravitational waves (GWs) remain unexplored messengers of new physics. Proposed sources in the MHz - GHz band include primordial black hole (PBH) mergers, PBH superradiance and several stochastic backgrounds.
Our collaboration is working on tapping into this source by employing superconducting radio frequency cavities for high precision measurements.
The detection principle is to load an EM mode of a cavity so that a GW-induced vibration of the cavity walls up-converts some power into another, unloaded EM mode. The power in the unloaded mode is then taken to be the GW signal.
This talk will outline the ongoing work and future plans of our project in Hamburg. Specifically, the projected sensitivity to potential sources, the cavity design, and the signal readout mechanism will be discussed.
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