Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 39: Suche nach dunkler Materie II
T 39.1: Gruppenbericht
Montag, 29. Februar 2016, 16:45–17:05, VMP9 SR 28
XENON1T experiment: searching for Dark Matter with a ton-scale liquid xenon detector — •Matteo Alfonsi for the XENON collaboration — Johannes Gutenberg Universität Mainz
The XENON1T detector is the first dual-phase Time Projection Chamber (TPC) searching for Dark Matter with a ton scale ultra-pure liquid xenon target. We aim at the discovery of Weakly Interacting Massive Particles (WIMPs), well motivated particle candidates to explain the current abundance of Dark Matter in the Universe.
In Fall 2015 the construction in Hall B at the Laboratory Nazionali del Gran Sasso in Italy has been completed and the commissioning of the TPC, the active muon veto, all the cryogenics and the xenon purification infrastructures, is in a well advanced status. The first signals from the 248 ultra-low background Photomultiplier Tubes from Hamamatsu Photonics have been collected with the Data Acquisition system developed for XENON1T, and this allows for the validation of the reconstruction and analysis software as well. The first science run is expected to start in the first half of 2016: with 1 ton of xenon fiducial mass (out of a total of 3.3 ton) and 2 years exposure, we expect to reach a sensitivity to spin-indipendent WIMP-nucleon cross section better than 2×10−47 cm2 (90% confidence level) .
In this talk I report about the progress of the XENON1T commissioning and the ongoing studies on novel calibration techniques with XENON100, the still operational predecessor experiment.