Multiple-cell cavity for axion dark matter search

Cavity-based axion dark matter experiments utilize multiple-cavity detectors, consisting of an array of identical cavities, to explore high mass regions. We introduce a new design of a pizza-cylinder type detector, characterized by multiple cells evenly divided by partitions and a narrow hollow gap in the middle of a cavity. This concept is superior to the conventional multiple-cavity design in terms of detection volume, experimental setup, and phase-matching mechanism. We present various simulation studies and an experimental demonstration to verify that this design is promising for searching for high mass axions.