Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 47: Eingeladene Vorträge II

T 47.2: Eingeladener Vortrag

Mittwoch, 21. März 2018, 14:24–14:48, Z6 - HS 0.002

IAXO & MADMAX - Axion Searches with Helio- & Haloscopes — •Christoph Krieger — Physikalisches Institut, Universität Bonn, Nußallee 12, 53115 Bonn — Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg

Axions feature a small mass and only weak couplings which provide a suitable candidate for Dark Matter. The detection of axions relies mostly on the conversion of axions to photons inside a strong electromagnetic field via the inverse Primakoff effect.

Axion helioscopes look for axions produced in the solar core which reach earth and can be detected by strong magnets pointed towards the sun converting them back into X-ray photons. The International Axion Observatory (IAXO) is a next generation helioscope currently under consideration.

The Magnetized Disc and Mirror Axion Experiment (MADMAX) is a proposed dielectric haloscope, supposed to be built at DESY in Hamburg. Here the conversion of axions into microwave photons happens at the surfaces of dielectric discs in a magnetic field. Dielectric haloscopes enable the detection of axions in a previously inaccessible mass range.

Prospects and first milestones for both experiments, IAXO and MADMAX, will be presented. For IAXO this especially includes the development of low background X-ray detectors while for MADMAX first results concerning the production of large area dielectric discs will be shown.