Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 105: Search for Dark Matter 6

T 105.7: Vortrag

Donnerstag, 24. März 2022, 17:45–18:00, T-H37

Piezoelectric driven dielectric discs for the MADMAX haloscope — •Dagmar Kreikemeyer-Lorenzo for the MADMAX collaboration — Max Planck Institute for Physics, Munich, Germany

Axions are hypothetical particles conceived to explain the strong CP problem of the Standard Model. Simultaneously, axions are an excellent candidate for cold dark matter. MADMAX (MAgnetized Disk and Mirror Axion eXperiment) aims to detect axions in the mass range between 40 and 400 µeV. For that, it exploits axion to photon conversion at surfaces with different dielectric constants in the presence of a strong magnetic field. The MADMAX haloscope or booster setup will consist of several parallel and adjustable dielectric discs. The separation between discs will be optimised for the axion mass using very precise piezoelectric motors. Here we present the first investigation of the performance of such piezo motors, developed by the company JPE, under realistic conditions relevant for MADMAX. First results at room temperature and at 4.2 K will be shown.