Scintillation light increase of carbontetrafluoride gas at low temperature

TL;DR

This study investigates how cooling carbontetrafluoride gas enhances its scintillation light yield and improves energy resolution, providing valuable insights for particle detection applications in dark matter research.

Contribution

It is the first to measure the temperature dependence of scintillation light yield in CF4 gas, revealing a significant increase at low temperatures.

Findings

Light yield of CF4 increases by 41% when cooled from 300K to 263K.

Energy resolution of CF4 improves at lower temperatures.

Cooling enhances scintillation performance for particle detection.

Abstract

Scintillation detector is widely used for the particle detection in the field of particle physics. Particle detectors containing fluorine-19 ($^{19}\mathrm{F}$) are known to have advantages for Weakly Interacting Massive Particles (WIMPs) dark matter search, especially for spin-dependent interactions with WIMPs due to its spin structure. In this study, the scintillation properties of carbontetrafluoride ($\mathrm{CF_{4}}$) gas at low temperature was evaluated because its temperature dependence of light yield has not been measured. We evaluated the light yield by cooling the gas from room temperature (300K) to 263K. As a result, the light yield of $\mathrm{CF_{4}}$ was found to increase by $(41.0\pm4.0_{\rm stat.}\pm6.6_{\rm syst.})\%$ and the energy resolution was also found to improve at low temperature.