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Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 31: Direkte Suche nach Dunkler Materie II

T 31.3: Talk

Tuesday, March 26, 2019, 16:30–16:45, H09

Radiogenic Background Simulations for XENONnT — •Diego Ramírez García for the XENON collaboration — Albert-Ludwigs-Universität Freiburg, Freiburg im Breisgau, Germany

The XENON1T experiment at the Laboratori Nazionali del Gran Sasso has achieved the world-leading sensitivity in the direct search for dark matter in the form of Weakly Interacting Massive Particles (WIMPs). Its upgrade to XENONnT will use a liquid xenon target of 5.9 t, aiming at further improving this sensitivity by an order of magnitude, and will be operative in 2019.

For a multi ton-scale time projection chamber, the background signals induced by radioisotopes from the detector materials will become relevant in the WIMP search region of interest. Using the material-intrinsic levels of radioactivity measured in screening campaigns, Monte Carlo simulations have been performed in order to estimate this contribution. This talk will briefly describe the utilized framework to model the detector response and summarize the result on the predicted radiogenic background.

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