论文标题
在与爱丽丝的高密度环境中跟踪重建
Track Reconstruction in a High-Density Environment with ALICE
论文作者
论文摘要
爱丽丝是CERN大型强子对撞机（LHC）的专用重离子实验。它的主要跟踪和粒子识别探测器是大容量时间投影室（TPC）。 TPC的设计旨在在高能重型离子碰撞中产生的高轨道密度环境中表现良好。在此程序中，我们描述了爱丽丝中的轨道重建程序。特别是，我们专注于LHC运行2个数据制作期（2015--2018）中面临的两个主要挑战，这是TPC中基线的波动和局部空间充电扭曲。我们详细介绍了相应的解决方案，并描述了使我们能够规避这些挑战的软件工具。
ALICE is the dedicated heavy-ion experiment at the CERN Large Hadron Collider (LHC). Its main tracking and particle-identification detector is a large volume Time Projection Chamber (TPC). The TPC has been designed to perform well in the high-track density environment created in high-energy heavy-ion collisions. In this proceeding, we describe the track reconstruction procedure in ALICE. In particular, we focus on the two main challenges that were faced during the Run 2 data-taking period (2015--2018) of the LHC, which were the baseline fluctuations and the local space charge distortions in the TPC. We present the corresponding solutions in detail and describe the software tools that allowed us to circumvent these challenges.
