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The Xenoscope vertical demonstrator for the DARWIN experiment utilizes an array of silicon photomultipliers within its 2.6 m long time projection chamber (TPC).
The array consists of 48 VUV4 MMPCs from Hamamatsu (model S13371-6050CQ-02) with a 12-channel readout and is placed above the liquid xenon column. It is operated as a light readout for the secondary proportional scintillation signals coming from extracted electrons in the TPC. The design and development of the silicon photomultiplier array of Xenoscope, covering the structural and electronic design, sensor characterisation at cryogenic temperature and signal simulation was carried out by PhD student Ricardo Peres. This work was recently published in JINST.
