Characterization of Silicon Photomultipliers for NEXO. Poster presented at: Conference Experience for Undergraduates (CEU) at Division of Nuclear Physics (DNP) of American Physical Society; 2021 Oct 12; Boston (Virtual)
Abstract:
Neutrinos are constantly bombarding us, but their interactions are so weak that studying their properties, including their quantum nature, can be challenging. The next-generation nEXO experiment is a planned experiment that would use 5000 kg of isotopically enriched liquid-xenon in a time projection chamber to look for neutrinoless double beta decay (0vββ) in 136Xe with a target half-life sensitivity of about 10^28 ys. nEXO plans to use SiPMs as photosensors to detect liquid xenon scintillation light (peak wavelength at 175 nm), because they are radiopure devices operated at low voltages with high gain (10^5-10^6 electrons) allowing. My objective is to characterize SiPMs at cryogenic temperature and ensure that it's application will help towards achieving the nEXO goal of ~1% energy resolution at the Q-value of 0vββ of 136Xe.
Abstract:
Neutrinos are constantly bombarding us, but their interactions are so weak that studying their properties, including their quantum nature, can be challenging. The next-generation nEXO experiment is a planned experiment that would use 5000 kg of isotopically enriched liquid-xenon in a time projection chamber to look for neutrinoless double beta decay (0vββ) in 136Xe with a target half-life sensitivity of about 10^28 ys. nEXO plans to use SiPMs as photosensors to detect liquid xenon scintillation light (peak wavelength at 175 nm), because they are radiopure devices operated at low voltages with high gain (10^5-10^6 electrons) allowing. My objective is to characterize SiPMs at cryogenic temperature and ensure that it's application will help towards achieving the nEXO goal of ~1% energy resolution at the Q-value of 0vββ of 136Xe.