Göttingen 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 47: Axions/ALPs II

T 47.6: Vortrag

Mittwoch, 2. April 2025, 17:30–17:45, VG 0.110

Determination of the absolute X-ray detection efficiency of the TAXO SDD for IAXO — •Patrick Bongratz¹, Susanne Mertens^1,2, Lucinda Schönfeld¹, Daniel Siegmann², Juan Pablo Ulloa Beteta², and Christoph Wiesinger² for the IAXO collaboration — ¹Max Planck Institut für Kernphysik, Heidelberg, DE — ²Physik-Department, Technische Universität München, Garching, DE

The International Axion Observatory (IAXO) aims to improve the search for solar axions by at least one order of magnitude with respect to previous helioscope experiments. In a helioscope experiment solar axions are back-converted to X-rays in a strong magnet pointed at the sun. Silicon drift detectors (SDDs) are particularly suited to detect this signal. Good noise performance allows for sub-keV thresholds, while a thin entrance window ensures high detection efficiency. In this talk, I will report on the TRISTAN SDD for IAXO (TAXO) project and the measurement of the absolute X-ray detection efficiency at the SOLEIL synchrotron facility. This project has received funding from the European Research Council (ERC) under the European Union Horizon 2020 research and innovation programme (grant agreement No. 852845).

Keywords: Axion; X-ray detection; Silicon Drift Detector; Rare Event Search; Efficiency Measurement