Speaker
Description
Undoped CsI crystals are promising target materials for dark matter detection due to their high scintillation light yield at cryogenic temperatures. At liquid nitrogen temperature (~77 K), they emit more than 80,000 photons/MeV, making them suitable for detecting low-energy nuclear recoils. In this study, we investigated the scintillation properties of an undoped CsI crystal coupled with two silicon photomultipliers (SiPMs), which are compact and compatible with low-temperature operation. We measured the temperature-dependent light yield and scintillation decay time from room temperature down to 77 K. Based on the measured performance, we also evaluated the dark matter detection sensitivity of the undoped CsI–SiPM system. In this presentation, we will discuss the experimental results and assess the potential of this detector configuration for future low-threshold dark matter searches.
