论文标题
A 1 m $^3 $燃气时间投影室，带有光学读数用于方向暗物质搜索：Cygno实验
A 1 m$^3$ Gas Time Projection Chamber with Optical Readout for Directional Dark Matter Searches: the CYGNO Experiment
论文作者
论文摘要
Cygno项目的目的是用于定向暗物质搜索和相干中微子散射测量值1〜m $^3 $ os TPC的构建和操作，作为朝向100-1000〜M $ $^3 $^3 $（0.15-1.5吨）地下实验网络的原型。在这样的TPC中，由深色或中微子诱导的核后索产生的电子将朝向，并将乘以三层宝石结构，而SCMOS摄像机将在Avalanche工艺中产生的光线读取，并通过2D图像提供了数百米底的2D图像。 PhotoLultipliers还将同时快速读数光产生的时间曲线，从而提供有关第三个坐标的信息，从而允许对事件进行3D重建，从中可以推断出核后坐力的方向，从而推断出传入粒子的方向。事件拓扑的这种详细重建也将允许纯粹有效的信号到背景歧视。这两个功能是达到和克服太阳中微子背景的关键，该背景最终将限制非方向的暗物质搜索。
The aim of the CYGNO project is the construction and operation of a 1~m$^3$ gas TPC for directional dark matter searches and coherent neutrino scattering measurements, as a prototype toward the 100-1000~m$^3$ (0.15-1.5 tons) CYGNUS network of underground experiments. In such a TPC, electrons produced by dark-matter- or neutrino-induced nuclear recoils will drift toward and will be multiplied by a three-layer GEM structure, and the light produced in the avalanche processes will be readout by a sCMOS camera, providing a 2D image of the event with a resolution of a few hundred micrometers. Photomultipliers will also provide a simultaneous fast readout of the time profile of the light production, giving information about the third coordinate and hence allowing a 3D reconstruction of the event, from which the direction of the nuclear recoil and consequently the direction of the incoming particle can be inferred. Such a detailed reconstruction of the event topology will also allow a pure and efficient signal to background discrimination. These two features are the key to reach and overcome the solar neutrino background that will ultimately limit non-directional dark matter searches.
