Speaker
Description
The cavity haloscope is a highly sensitive technique for detecting dark matter axions within the microwave region. The Center for Axion and Precision Physics Research at the Institute for Basic Science (IBS-CAPP) has ingeniously developed cavity designs specifically tailored for high-mass axions, such as multiple-cell cavities, a wheel tuning mechanism, and tunable photonic crystal cavities. Furthermore, we have recently proposed a horn antenna array haloscope optimized for an even higher frequency range, spanning from tens to hundreds of GHz. Additionally, a new detection scheme employing heterodyne interferometry has been proposed to amplify and detect the variance of weak signals when knowing their coherence time. This presentation provides an overview of CAPP's efforts on high-mass dark matter axion searches and introduces the variance method.
