This paper presents the first search for dark matter axions with mass in the ranges 76.56 to 76.82 μeV and 79.31 to 79.53 μeV using a prototype setup for the MAgnetized Disk and Mirror Axion eXperiment (MADMAX). The experimental setup employs a dielectric haloscope consisting of three sapphire disks and a mirror to resonantly enhance the axion-induced microwave signal within the magnetic dipole field provided by the 1.6 T Morpurgo magnet at CERN. Over 14.5 days of data collection, no axion signal was detected. A 95% CL upper limit on the axion-photon coupling strength down to ∣gaγ∣∼2×10−11GeV−1 is set in the targeted mass ranges, surpassing previous constraints, assuming a local axion dark matter density ρa of 0.3GeV/cm3. This study marks the first axion dark matter search using a dielectric haloscope.
@article{arxiv.2409.11777,
title = {First search for axion dark matter with a Madmax prototype},
author = {B. Ary dos Santos Garcia and D. Bergermann and A. Caldwell and V. Dabhi and C. Diaconu and J. Diehl and G. Dvali and J. Egge and E. Garutti and S. Heyminck and F. Hubaut and A. Ivanov and J. Jochum and S. Knirck and M. Kramer and D. Kreikemeyer-Lorenzo and C. Krieger and C. Lee and D. Leppla-Weber and X. Li and A. Lindner and B. Majorovits and J. P. A. Maldonado and A. Martini and A. Miyazaki and E. Öz and P. Pralavorio and G. Raffelt and J. Redondo and A. Ringwald and J. Schaffran and A. Schmidt and F. Steffen and C. Strandhagen and I. Usherov and H. Wang and G. Wieching},
journal= {arXiv preprint arXiv:2409.11777},
year = {2025}
}