Abstract

In these proceedings we present the latest progress on our microwave cavity light shining through a wall hidden sector photon experiment, as well as introduce a new method of hidden sector photon detection. Our new experiment uses a high Q superconducting Niobium emitter cavity and moderate Q room temperature copper detector cavity separated by ample shielding. The projected sensitivity of our setup to the kinetic mixing factor is χ ∼ 1.8× 10−8 at a hidden sector photon mass of 52.1μeV. A new technique for detecting hidden sector photons using a threshold crossing is also presented.

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