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T: Fachverband Teilchenphysik

T 45: Search for Dark Matter 2

T 45.6: Vortrag

Dienstag, 5. März 2024, 17:15–17:30, Geb. 30.35: HSI

A first dark photon search with an open dielectric haloscope — •Jacob Egge for the MADMAX collaboration — Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee149, 22761 Hamburg

The MAgnetized Disk and Mirror Axion eXperiment aims to detect axions or dark photons in the mass range of 40-400 µ eV that remains inaccessible to the traditional cavity approach. The key component of MADMAX is the booster: a stack of dielectric disks that forms an open resonator whose volume can scale independently of the resonance frequency. To demonstrate the feasibility of this concept, the MADMAX prototype is currently under construction. Even before operation at cryogenic temperatures and magnetic field, a simple receiver chain and small booster is capable of exploring new dark photon parameter space.

In this talk I will present the results of a first dark photon search with the MADMAX prototype including the characterization and calibration of the receiver system and booster. Using a novel approach, the sensitivity to dark photons is obtained in a model-independent way and cross-checked against simulations.

Keywords: dark matter; haloscope; axion; dark photon