Regular Article - Experimental Physics
The first dual-phase xenon TPC equipped with silicon photomultipliers and characterisation with
Department of Physics, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
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Accepted: 8 May 2020
Published online: 26 May 2020
For the first time, a small dual-phase (liquid/gas) xenon time projection chamber was equipped with a top array of silicon photomultipliers for light and charge readout. Here we describe the instrument in detail, as well as the data processing and the event position reconstruction algorithms. We obtain a spatial resolution of in the horizontal plane. To characterise the detector performance, we show calibration data with internal and sources, and we detail the production of the latter as well as its introduction into the system. We finally compare the observed light and charge yields down to electronic recoil energies of to predictions based on NEST v2.0.
© The Author(s), 2020