MADMAX: A Dielectric Haloscope Experiment
February 09, 2021
Axions emerge naturally from the Peccei-Quinn (PQ) mechanism which addresses the absence of CP violation in QCD; the axions produced through the "vacuum realignment mechanism" are also a good cold dark matter (CDM) candidate. If PQ symmetry breaking had occurred after inflation, the axion mass is likely to fall in the range of $26 ~\mu$eV to $1$ meV, which is yet to be explored experimentally.
We present a novel dielectric haloscope experiment dedicated to the direct detection of the axions that constitute the local galactic dark matter halo in the mass range of 40 to 400 $\mu$eV — the MAgnetized Disc and Mirror Axion eXperiment (MADMAX). Multiple dielectric discs and a metal mirror are placed in a strong magnetic field to utilize the axion-induced coherent electromagnetic waves emitted from each disc surface and their resonances within the discs-mirror system, such that the axion-induced signal can be boosted to a level detectable by state-of-the-art low noise amplifiers. The design and sensitivity of MADMAX, ongoing R&D activities and the project roadmap are presented.
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.