论文标题
爱丽丝实验升级
The ALICE Experiment Upgrades
论文作者
论文摘要
为了扩展其物理能力并从运行3中的LHC发光度增加而获得了全面利润的2019 - 2021期间长期关闭的爱丽丝实验。内部跟踪系统已基于地图技术的新硅跟踪器代替，并且在Muon Spections的前面添加了新的跟踪设备，以提高Muon Spections vertexing Compability。用于TPC读数的电线室已被新的GEM探测器取代，该探测器将使离子回流最小化并允许连续数据获取：此外，已经安装了专门用于快速触发的新检测器阵列。在软件方面，添加了新的第一次通过重建，以处理和减少数据流和存储。鉴于LHC Run 4，这些升级将与未来爱丽丝升级的前景一起介绍，其中包括更换其内部跟踪层，并使用升级的硅设备和高颗粒性电磁量和前向方向的高颗粒电磁量和HADRONIC ACALORIMETER（（焦点）（焦点）
The ALICE experiment profited of the Long Shutdown during 2019-2021 in order to expand its physics capabilities and fully profit from the increased LHC luminosity in Run 3. The Inner Tracking System has been replaced with a new silicon tracker based on MAPS technology, and a new tracking device has been added in front of the Muon Spectrometer to improve its vertexing capabilities. The wire chambers for TPC readout have been replaced with new GEM detectors which will minimize ion backflow and allow for continuous data taking: moreover, a new detector array dedicated to fast triggering has been installed. On the software side, a new first pass reconstruction was added in order to handle and reduce the data flow and storage. These upgrades will be presented together with an outlook of the future ALICE upgrades in view of the LHC Run 4, which will include the replacement of the ITS inner tracking layers with upgraded silicon devices and a high-granularity electromagnetic and hadronic calorimeter in the forward direction (FOCAL)
