Joint Annual Meeting of SPS and ÖPG 2019

【328】First dual-phase xenon TPC with SiPM readout and its ultra-low energy calibration with 37-Ar

27 Aug 2019, 18:45

15m

G 91

Talk Nuclear, Particle- and Astrophysics (TASK) Nuclear, Particle- & Astrophysics

Speaker

Mr Kevin Thieme (University of Zurich)

Description

As part of the R&D towards the ultimate dark matter observatory DARWIN, we conduct tests with novel silicon photomultipliers (SiPM) for vacuum ultra violet (VUV) light being a promising alternative to traditionally used photomultiplier tubes. In particular, we are operating a small-scale dual phase (liquid/gas) xenon time projection chamber (TPC) instrumented with VUV-sensitive SiPMs from Hamamatsu for light and charge readout, being the first in the field. After a successful commissioning in Summer 2018, in this talk, we present the results from ${}^{83\mathrm{m}}$Kr calibration data to proof the principle of the detector design with the new photosensors. Moreover, we will show the analysis from a recently performed low-keV energy calibration with ${}^{37}$Ar gas at the energy threshold of the detector.

Presentation materials

SPS2019_Kevin_Thieme_UZH.pdf