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Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 72: Postersitzung Teilchenphysik

T 72.8: Poster

Dienstag, 28. März 2017, 16:45–19:00, F Foyer

Geant4 simulations of the XENON1T dual-phase xenon TPC — •Lutz Althüser — IKP, Westfälische Wilhelms-Universität Münster

The XENON Dark Matter Project uses the concept of a dual-phase xenon time projection chamber (TPC) for a direct detection of weakly interacting massive particles (WIMPs). In the current operating step, XENON1T, the sensitivity of the detector will be increased by two orders of magnitude compared to its predecessor XENON100.

Therefore the TPC is build to detect low intensity VUV light signals, generated either directly by the recoil produced by the scattering processes of incoming particles (S1) or through proportional scintillation (S2). The light collection efficiency (LCE) of these signals depends on the position of interaction in the active volume and on the optical properties of the materials. The settings of these MC parameters needs to be obtained from and checked against actual data during the operation.

This poster will focus on the implementation of the XENON1T Geant4 MC and its simulation of the LCE for S1 and S2 signals with regard to several optical parameters like the reflectivity of Teflon and the refraction index of liquid xenon.

This work is supported by BMBF under contract 05A14PM1.

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