SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 38: Neutrinos, Dark Matter V

T 38.2: Vortrag

Dienstag, 21. März 2023, 17:15–17:30, HSZ/0002

Fitting the reflectivity of the MADMAX booster — •David Leppla-Weber for the MADMAX collaboration — Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg — Now at Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany

The MAgnetized Disk and Mirror Axion eXperiment is a dielectric haloscope aiming to detect axions from the galactic halo by resonant conversion to photons in a strong magnetic field. It uses a stack of dielectric disks, called booster, to amplify the axion-photon conversion probability over a significant mass range dependent on the position of the adjustable disks. In the planned prototype, depending on the axion mass, amplifications of a factor of ∼ 10⁴ can be achieved. To calibrate the system, an optimization fitting measurements to simulation is needed. The main physical quantity of the booster that can be measured is its complex reflectivity. It is shown how the simulation parameters are optimized in a way to reproduce the measured reflectivity. Previously, instead of the reflectivity, the group delay was used. The new method improves the match between simulation and measurement by one order of magnitude.