Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 105: Search for Dark Matter 6

T 105.1: Vortrag

Donnerstag, 24. März 2022, 16:15–16:30, T-H37

The MAgnetized Disk and Mirror Axion eXperiment — •Christoph Krieger for the MADMAX collaboration — Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg

The axion is a viable and natural candidate for (cold) dark matter. The mass range for the discovery of axions, favored by some models, 40 to 400 µeV, can be investigated using a dielectric haloscope. The MAgentized Disc and Mirror Axion eXperiment is the first axion haloscope based on this approach, utilizing the axion photon conversion at dielectric surfaces in a strong magnetic field. By combining many surfaces, the conversion can be boosted significantly using constructive interference and resonances.

MADMAX will feature a booster system consisting of up to 80 dielectric discs with more than a meter diameter which can be precisely positioned at cryogenic conditions and inside a 9 T magnetic field created by a superconducting dipole magnet with a large warm bore. To prototype this challenging apparatus, a scaled down version (reduced number of discs with 300 mm diameter) is in development. It will be commissioned first at the Universität Hamburg in a dedicated cryostat. It is planned to conduct a first axion-like particle search utilizing the MORPURGO magnet at CERN.

In this presentation, the concept of MADMAX will be presented and an overview will be given on the status and development of MADMAX and its prototype.