Speaker
Description
This presentation elaborates on the latest advances in the development and characterization of a 6.6 kg prototype CryoCsI detector, alongside a pulse shape discrimination (PSD) method for suppressing the dominant afterglow background. The detector achieves a high light yield of 29 PE/keVee and an energy resolution below 8% at 60 keV, accompanied by excellent long-term stability. Additionally, precision measurements of the quenching factor for pure CsI at low temperatures are presented. Our verification confirms that afterglow serves as the primary background component, and a tailored PSD method is accordingly proposed for background suppression. The effectiveness of this PSD technique is validated using historical CsI(Na) datasets, which is anticipated to substantially reduce statistical uncertainties and improve its BSM sensitivity. Finally, the sensitivity of the CryoCsI detector is systematically discussed.
| 请选择分会 | 中微子物理、粒子天体物理与宇宙学 |
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