AI 中文总结
CYGNO合作组织提出创新方法，用高分辨率光学时间投影室直接探测暗物质，以He:CF4气体混合物在大气压下运行，通过三级气体电子倍增器放大信号，利用光学读出系统结合光时间轮廓与X-Y跟踪实现3D事件重建。
AI 中文摘要
CYGNO合作组织引入了一种用于直接暗物质探测的创新方法，提出了一种高分辨率光学时间投影室。它在大气压下以He:CF4（60:40）气体混合物运行，并使用三级气体电子倍增器进行信号放大。其关键特性是光学读出系统，可捕捉电子雪崩过程中产生的闪烁光。通过将光电倍增管检测到的光的时间轮廓与科学相机记录的高粒度像素化X-Y跟踪相结合，这种设置允许进行3D事件重建。
英文摘要
The CYGNO collaboration introduces an innovative approach to direct dark matter detection, proposing a high-resolution optical Time Projection Chamber. It operates at atmospheric pressure with a He:CF$_{4}$ (60:40) gas mixture and uses a triple Gas Electron Multiplier stage for signal amplification. A key feature is its optical readout system, which captures the scintillation light produced during the electron avalanche. This setup allows 3D event reconstruction by combining the time profile of the light detected by photomultiplier tubes with high-granularity, pixelated X-Y tracking recorded by a scientific camera. The CYGNO experiment's projected sensitivity to both spin-independent and spin-dependent interactions is competitive in the framework of directional dark matter detectors. However, incorporating a hydrogen-based gas would introduce an even lighter target, further improving the detection potential at low dark matter masses. In this work, we present the performance characterization of one of the CYGNO experiment prototypes, MANGO, operated with the standard gas mixture enriched with varying concentrations of HFO-1234ze, a gas with a promising low global warming potential. The study includes measurements of the detector charge gain and scintillation yield for each configuration. In addition, to evaluate the impact of HFO-1234ze on scintillation light quenching, the secondary scintillation spectrum was collected for each gas mixture tested.
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