Erlangen 2026 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 80: Axions/ALPs II

T 80.2: Vortrag

Donnerstag, 19. März 2026, 16:30–16:45, KH 02.019

Towards a low background SDD for IAXO — •Lucinda Schönfeld¹, Christian Buck¹, Susanne Mertens¹, Christoph Wiesinger¹, Michael Willers², and Juan Pablo Ulloa Beteta¹ — ¹Max-Planck-Institut für Kernphysik, Heidelberg, DE — ²Technische Universität München, Garching, DE

Axions are hypothetical particles that solve the strong CP problem and are candidates for dark matter. The International Axion Observatory (IAXO) is aiming to find these elusive particles by converting solar axions to X-rays. Detecting this rare signal requires highly efficient ultra-low background X-ray detectors, for which Silicon Drift Detectors (SDDs) are well suited. I will present the current status of the TRISTAN SDD for IAXO (TAXO) project, which is developing such an SDD. A particular focus will be the latest results of background measurements, as well as simulations to find an optimal shielding setup.

Keywords: rare-event search; semiconductor detector; low background; dark matter; X-ray detector