DarkSide-20k is a next-generation experiment designed to search for dark matter using a dual-phase liquid-argon time projection chamber (TPC). In DarkSide-20k, more than 500 SiPM-based Photodetector Units (PDUs) will instrument the TPC and its active veto. This talk will focus on the cryogenic validation of those modules, carried out in the dedicated Photodetector Test Facility (PTF) and in...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation neutrino physics experiment that will answer some of the most compelling questions in particle physics and cosmology. The DUNE Far Detector (FD) exploits silicon photomultipliers (SiPMs) to detect scintillation photons produced by the interaction of charged particles in the liquid argon time projection chamber (LArTPC). Light...
Cryogenic, vacuum-ultraviolet (VUV)-sensitive silicon photomultipliers (SiPMs) are being developed for next-generation experiments to search for neutrinoless double beta decay like nEXO. nEXO is a time-projection chamber enriched to 90% Xe-136 designed to search for neutrinoless double-beta decay with a projected half-life sensitivity of 1.35*10^28 years over a 10-year lifespan. Achieving...
The Deep Underground Neutrino Experiment (DUNE) is designed to tackle major open questions in neutrino physics, such as CP violation and neutrino mass ordering, by using large-scale liquid argon time projection chambers (LArTPCs). The Phase II of the project, the Far Detector modules will feature vertical-drift, single-phase LArTPCs with an active volume of 13 m × 13 m × 60 m and dual anode...
The proof of the PoWER concept will be presented. PoWER is based on the use of PEN and acrylic foils, coupled with conventional and Vacuum Ultra Violet (VUV) silicon photomultipliers (SiPM) to read-out liquid argon (LAr) scintillation light. The LAr volume of the detector is divided up into a core region and a veto buffer which surrounds the core, both filled with argon. The two regions are...
Driven by growing astrophysical and cosmological evidence supporting the existence of dark matter (DM), numerous direct detection experiments have been developed to search for particle DM candidates, such as DarkSide, XENON, LZ. The use of noble elements as the target medium are commonly adopted in the field for their intrinsic characteristics, and where vacuum ultraviolet (VUV) scintillation...
Wavelength-shifting (WLS) materials are essential in noble liquid detectors (such as those using liquid argon or xenon) to convert vacuum ultraviolet (VUV) scintillation light into visible wavelengths, enabling efficient photon detection. The overall performance of these detectors relies heavily on the quality, uniformity, and stability of the wavelength-shifting coatings applied to various...
Developing a photodetector system with an ultralow radioactivity background is crucial for experiments focused on detecting rare events. Silicon photomultipliers (SiPMs) and application-specific integrated circuits (ASICs) are ideal for low-background photosensors and readout electronics, respectively, as they can attain high radiopurity without significant additional effort. However,...
In the PandaX-4T experiment, R11410 photomultiplier tubes (PMTs) account for approximately 47% of the detector’s material-induced electron recoil background, representing a major limitation in background reduction. As future liquid xenon detectors, such as the proposed PandaX-20T with a 20-tonne target, aim to reach sensitivities $3.5×10^{-49} cm^{2}$ at $40 GeV/c^2$ near the irreducible...
This report will include the internal and external crosstalk measurment and analysis results for two SiPM devices: FBK HD3 and HPK VUV4 SiPMs. They are the candidate photosensors of nEXO experiment. External crosstalk (ExCT) is generally difficult to measure. We employed a setup called the Microscope for the Injection and Emission of Light to characterize the single-avalanche light emission...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino oscillation experiment. A critical component of the DUNE Near Detector (ND) is a Liquid Argon Time Projection Chamber (LArTPC) called ND-LAr. A novel pixelated charge readout technology, LArPix, has been developed for use in ND-LAr and other LArTPCs. This technology has been implemented in the 2x2...
Darkside-20k is designed as a dual phase Time Projection Chamber (TPC), relying on light + charge signal readout, to explore the parameter space of WIMP candidates of Dark Matter with an unprecedented sensitivity down to the neutrino fog. The experiment will deploy a total of > 26 m$^2$ area of Silicon Photo-multiplier (SiPMs) as the photon sensitive surface, integrated on the TPC top-bottom...
