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Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 71: Astroparticle Physics 5

HK 71.5: Talk

Friday, March 27, 2015, 16:00–16:15, M/HS4

Radon Screening for XENON1T — •Sebastian Lindemann — Max-Planck-Institut für Kernphysik, Heidelberg, Deutschland

Radon with its isotope 222Rn is one of the dominant sources of internal background in liquid xenon detectors searching for low energetic rare events like WIMP-nucleon scattering. In my talk I will briefly review the problem posed by 222Rn and motivate the screening strategy followed by XENON1T. I will introduce the radon emanation technique making use of ultra low background proportional counters and present selected results obtained during the design and construction phases of XENON1T. Finally, I will sketch advances in radon emanation assay techniques and give a short outlook on upcoming measurements.

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