Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 39: Suche nach dunkler Materie II
T 39.3: Vortrag
Montag, 29. Februar 2016, 17:20–17:35, VMP9 SR 28
XENON1T radon assay — •Stefan Brünner for the XENON collaboration — MPIK, Heidelberg, Deutschland
The radioactive isotope 222Rn is one of the most dominant intrinsic background sources for experiments dealing with a low event rate like the XENON1T Dark Matter detector. Being part of the primordial decay chain of 238U the noble gas 222Rn permanently emanates from almost all materials. Therefore, it is crucial to determine the radon emanation rate of those detector components that will be in contact with the xenon target. The technique of the radon emanation measurements, making use of ultra low background proportional counters is presented as well as selected results for XENON1T.