Speaker
Ankur Agrawal
Description
Axion dark matter haloscope requires high magnetic field to convert dark matter into microwave photons and high-Q cavities to store these photons for measurement. Copper cavities with Q ~ $10^{4}$ must be used since the high magnetic field makes it challenging to utilize superconducting cavities. Photonic Bandgap (PBG) cavities made out of high contrast, low-loss dielectric material can operate in high field and achieve a Q-values of $10^{8}$. I will discuss the design and simulation results of a 3D FCC-type lattice constructed using alternating layers of Rutile and Sapphire which shows a large bandgap of ~ 31% centered around the desired cavity frequency.