We propose a novel design of a laboratory search for axions based on photon regeneration with superconducting RF cavities. Our particular setup uses a toroid as a region of confined static magnetic field, while production and detection cavities are positioned in regions of vanishing external field. This permits cavity operation at quality factors of Q∼1010−1012. The limitations due to fundamental issues such as signal screening and back-reaction are discussed, and the optimal sensitivity is calculated. This experimental design can potentially probe axion-photon couplings beyond astrophysical limits, comparable and complementary to next generation optical experiments.
@article{arxiv.1904.07245,
title = {Axion production and detection with superconducting RF cavities},
author = {Ryan Janish and Vijay Narayan and Surjeet Rajendran and Paul Riggins},
journal= {arXiv preprint arXiv:1904.07245},
year = {2019}
}