Speaker: Sungwoo Youn (IBS, Daejeon)

Axions are a well-motivated dark matter candidate arising from the Peccei–Quinn solution to the strong CP problem.

The IBS Dark Matter Axion Group (DMAG) is pursuing a comprehensive experimental program to search for axion dark matter using cavity haloscopes, which exploit the axion–photon coupling in strong magnetic fields.

In particular, IBS-DMAG has achieved world-leading sensitivity in the GHz frequency range, significantly advancing the exploration of QCD axion parameter space.

In this seminar, I will discuss the key experimental techniques underlying these efforts, including high-Q resonant cavities, ultra-low-noise microwave detection, and high-frequency search strategies.

I will also present our recent results from the past few years and outline future directions to extend sensitivity and mass coverage.