Acts: A common tracking software
Acts: A common tracking software
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发表时间：
2019-10
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通讯作者：
X. Ai
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作者：
X. Ai
高能实验中，带电粒子轨迹的重建是事件处理中最复杂、最耗CPU的部分之一。在未来的强子对撞机中，如高亮度大型强子对撞机（HL-LHC）或未来圆形对撞机（FCC），同时碰撞数量的显著增加将导致更具有挑战性的跟踪环境。利用多核和多加速器的现代计算体系结构的并发算法是维护和提高跟踪性能所必需的。基于LHC的跟踪经验，ACTS项目试图将当前的ATLAS软件封装成一个独立于实验和框架的软件，设计用于现代计算体系结构。它提供了一套高级轨道重建工具，这些工具与探测技术和磁场配置的细节无关。该软件已经过线程安全的全面测试，以支持代码的并行执行，其数据结构针对向量操作进行了优化，以加快线性代数操作。
The reconstruction of charged particle trajectories is one of the most complex and CPU consuming parts of event processing in high energy experiments. At future hadron colliders such as the High-Luminosity Large Hadron Collider (HL-LHC) or the Future Circular Collider (FCC), the significantly increased number of simultaneous collisions will result in a much more challenging tracking environment. Concurrent algorithms exploiting modern computing architectures with many cores and accelerators are necessary to maintain and improve the tracking performance. Based on the tracking experience at LHC, the ACTS project is an attempt to encapsulate the current ATLAS software into a experiment-independent and framework-independent software designed for modern computing architectures. It provides a set of high-level track reconstruction tools which are agnostic to the details of the detection technologies and magnetic field configuration. The software has been fully tested for thread-safety to support parallel execution of the code and its data structures are optimized for vector operations to speed up linear algebra operations.