A first proof of principle booster setup for the MADMAX dielectric haloscope

Understand

Axions and axion-like particles are excellent low-mass dark matter candidates.

• The MADMAX experiment aims to directly detect galactic axions with masses between $40\,\mu{\rm eV}$ and $400\,\mu{\rm eV}$ by using the axion-induced emission of electromagnetic waves from boundaries between materials of different dielectric constants under a strong magnetic field.
• Combining many such surfaces, this emission can be significantly enhanced (boosted) using constructive interference and resonances.
• We present a first proof of principle realization of such a booster system consisting of a copper mirror and up to five sapphire disks.