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T: Fachverband Teilchenphysik
T 28: Suche nach dunkler Materie II
T 28.2: Vortrag
Dienstag, 20. März 2018, 16:50–17:05, Philo-HS5
Studies of the XENON1T electronic recoil spectrum for physics beyond dark matter direct detection — •Christian Wittweg — Institut für Kernphysik, WWU Münster
XENON1T located at Laboratori Nazionali del Gran Sasso is the most sensitive dark matter direct detection experiment in the world today. It uses a dual phase time projection chamber with a sensitive liquid xenon volume of ∼ 2 tons to detect weakly interacting massive particles (WIMPs). Its unprecedented low energy electronic recoil background of (1.93 ± 0.25) · 10−4 events/(keV·kg·day) and the high target mass also make it sensitive to rare nuclear decays such as double beta decay processes as well as alternative dark matter candidates. Analyses in these physics channels require a detailed understanding of the electronic recoil spectrum from background sources.
This talk will focus on energy calibration, energy resolution and background modelling. A comparison of Monte Carlo simulations with the measured background energy spectrum will be presented. This work is supported by Deutsche Forschungsgemeinschaft (DFG) through the Research Training Group "GRK 2149: Strong and Weak Interactions - from Hadrons to Dark Matter".