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T: Fachverband Teilchenphysik

T 68: Poster

T 68.4: Poster

Dienstag, 25. März 2014, 16:45–19:00, ReWi EG

Design of a gas system and study of internal calibration sources for liquid Xenon-TPCs. — •Christopher Hils, Rainer Othegraven, and Uwe Oberlack — Johannes Gutenberg Universität Mainz

Future dark matter detectors based on the principle of a two-phase liquid xenon time-projection chamber, such as XENON1T or DARWIN require increasing use of internal calibration sources. Also the study of the low-energy response of liquid xenon, as planned with the MainzTPC requires good calibration points. We discuss the design and construction of a xenon gas system which allows the injection of trace calibration gases into the TPC. Moreover, we discuss trace gases currently in use and focus on ³⁷Ar, produced at the Mainz TRIGA reactor, as a low energy calibration point at 2.38 keV.