Scintillation characteristics of an undoped CsI crystal at low-temperature for dark matter search
arXiv:2312.07957 · doi:10.1016/j.astropartphys.2025.103150
Abstract
The scintillation characteristics of 1 g undoped CsI crystal were studied by directly coupling two silicon photomultipliers(SiPMs) over a temperature range from room temperature to 86 K. The scintillation decay time and light output were measured using x-ray and gamma-ray peaks from a 109Cd radioactive source. An increase in decay time was observed as the temperature decreased from room temperature to 86 K, ranging from 76 ns to 605 ns. The light output also increased, reaching 26.2 +/- 1.3 photoelectrons per keV electron-equivalent at 86 K. Leveraging the significantly enhanced scintillation light output of the undoped CsI crystal at low temperatures, coupling it with SiPMs results in a promising detector for rare event searches. Both cesium and iodine have an odd number of protons, making them suitable targets for probing dark matter-proton spin-dependent interactions. This study evaluates the sensitivity of the proposed detector to such interactions, incorporating the Migdal effect and assuming 200 kg of undoped CsI crystals for dark matter searches. The results indicate that undoped CsI coupled with SiPM can achieve world-competitive sensitivity for low-mass dark matter detection, particularly in the context of dark matter-proton spin-dependent interactions.
References in corpus (16)
- Observation of Coherent Elastic Neutrino-Nucleus Scattering
- Dark Matter Search Results from the Complete Exposure of the PICO-60 CF Bubble Chamber
- Low-Mass Dark Matter Search with CDMSlite
- New Limits on Interactions between Weakly Interacting Massive Particles and Nucleons Obtained with CsI(Tl) Crystal Detectors
- Final Results of the PICASSO Dark Matter Search Experiment
- Annual modulation results from three-year exposure of ANAIS-112
- Strong constraints from COSINE-100 on the DAMA dark matter results using the same sodium iodide target
- Three-year annual modulation search with COSINE-100
- Exploring coherent elastic neutrino-nucleus scattering using reactor electron antineutrinos in the NEON experiment
- Testing spin-dependent dark matter interactions with lithium aluminate targets in CRESST-III
- Response of undoped cryogenic CsI to low-energy nuclear recoils
- Scintillation characteristics of a NaI(Tl) crystal at low-temperature with silicon photomultiplier
- Performance of an ultra-pure NaI(Tl) detector produced by an indigenously-developed purification method and crystal growth for the COSINE-200 experiment
- A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment
- First operation of undoped CsI directly coupled with SiPMs at 77 Kelvin
- Sensitivities for coherent elastic scattering of solar and supernova neutrinos with future NaI(Tl) dark matter search detectors of COSINE-200/1T