The instantaneous luminosity of the Large Hadron Collider at CERN will be increased by about a factor of five with respect to the design value after the extensive upgrade program over the coming decade. In order to cope with the increasing luminosity, the ATLAS experiment is being upgraded as well. The largest phase-1 upgrade project for the ATLAS Muon System is the replacement of the present first station in the forward regions with the New Small Wheels (NSWs) during the long-LHC shutdown in 2019-2021. The NSWs are based on two detector technologies: Micromegas (MM) and small-strip TGC (sTGC), the later arranged in two quadruplets, each consisting of 8 layers. To retain the good precision tracking and trigger capabilities in the high background environment of the high luminosity LHC, each sTGC plane must achieve a spatial resolution better than 100 μm. It will allow to reconstruct tracks with an angular resolution of approximately 1 mrad. The sTGC design, performance, constructi...

中文翻译：

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小条纹薄间隙室，用于ATLAS实验的μ子光谱仪升级

经过未来十年的大规模升级计划后，欧洲核子研究中心大型强子对撞机的瞬时发光度将相对于设计价值提高约五倍。为了应付增加的发光度，ATLAS实验也正在升级。ATLAS Muon系统最大的第一阶段升级项目是在2019-2021年的大型强子对撞机停机期间，用新型小轮毂（NSW）替换前锋地区目前的第一个站点。新南威尔士州基于两种检测器技术：微米级（MM）和小带TGC（sTGC），后者以两个四联体排列，每个四联体由8层组成。为了在高亮度LHC的高背景环境中保持良好的精度跟踪和触发功能，每个sTGC平面必须实现优于100μm的空间分辨率。它将允许重建角度分辨率约为1 mrad的轨道。sTGC的设计，性能，构造...