论文标题
Cygno实验
The CYGNO Experiment
论文作者
论文摘要
搜索能够用一些KEV能量来检测和重建核和电子后坐力事件的新技术已经变得越来越重要，因为排除了高质量暗物质（DM）候选者的大区域。此外，对于DM发现的情况下，对传入粒子方向敏感的检测器将至关重要。带有光学读数的气态时间投影室（TPC）是非常有前途的探测器，将TPC技术提供的详细事件信息与最新一代科学光传感器的高灵敏度和粒度相结合。 Cygno实验（具有光学读数的Cygnus模块）旨在利用大体积TPC中多GEM结构的光学读数方法，以研究稀有事件，作为低质量DM或太阳中微子的相互作用。高粒度SCMOS摄像机和快速光传感器的联合使用允许重建轨道的3D方向，在少数KEV能量范围内提供良好的能量分辨率和非常高的灵敏度，以及非常良好的粒子识别，可用于区分核后备力与电子后座。该实验是cygnus proto-collaboration的一部分，该实验旨在构建用于方向性DM搜索的地下观测站网络。预计将在2022/23年建造一个立方米的演示器，以旨在在以后的阶段建立更大的规模设备（30 m $^3 $ - 100 m $^3 $）。
The search for a novel technology able to detect and reconstruct nuclear and electron recoil events with the energy of a few keV has become more and more important now that large regions of high-mass dark matter (DM) candidates have been excluded. Moreover, a detector sensitive to incoming particle direction will be crucial in the case of DM discovery to open the possibility of studying its properties. Gaseous time projection chambers (TPC) with optical readout are very promising detectors combining the detailed event information provided by the TPC technique with the high sensitivity and granularity of latest-generation scientific light sensors. The CYGNO experiment (a CYGNus module with Optical readout) aims to exploit the optical readout approach of multiple-GEM structures in large volume TPCs for the study of rare events as interactions of low-mass DM or solar neutrinos. The combined use of high-granularity sCMOS cameras and fast light sensors allows the reconstruction of the 3D direction of the tracks, offering good energy resolution and very high sensitivity in the few keV energy range, together with a very good particle identification useful for distinguishing nuclear recoils from electronic recoils. This experiment is part of the CYGNUS proto-collaboration, which aims at constructing a network of underground observatories for directional DM search. A one cubic meter demonstrator is expected to be built in 2022/23 aiming at a larger scale apparatus (30 m$^3$--100 m$^3$) at a later stage.
