Abstract

Many future tons-scale noble liquid detectors depend on the advanced Silicon Photomultipliers (SiPMs) that have good photodetection efficiency at the vacuum ultraviolet wavelength (VUV). The Next-generation Enriched Xenon Observatory (nEXO) experiment with a 5 tons liquid xenon time projection chamber (TPC) will use ~40,000 SiPMs for the direct detection of the 178 nm xenon scintillation light. We highlight the development works undertaken by the photodetector group in the nEXO collaboration on the performance characterization of Hamamatsu and FBK VUV sensitive SiPMs in purified liquid xenon.

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