Design of a hardware track finder (Fast Tracker) for the ATLAS trigger
Design of a hardware track finder (Fast Tracker) for the ATLAS trigger
复制标题
ATLAS触发器硬件寻轨器（Fast Tracker）的设计
DOI：
10.1088/1748-0221/11/02/c02056
复制
发表时间：
2015
期刊：
影响因子：
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通讯作者：
K. Yorita et.al. (ATLAS FTK group)
中科院分区：
文献类型：
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作者：
V. Cavaliere;K. Yorita et.al. (ATLAS FTK group)
在大型强子对撞机第二次运行期间，在触发水平上使用跟踪信息对触发和数据采集系统至关重要，而且在第三次运行中，在每个束团交叉时发生的当代碰撞将会增加，因此更是如此。快速跟踪器是ATLAS触发升级项目的一部分；它是一个硬件处理器，将提供每个一级接受事件(100 KHZ)和100μS的完整跟踪信息，用于动量低至1GeV的径迹。FTK提供对跟踪信息的快速、广泛的访问，其分辨率可与离线重建相媲美，有助于精确检测主顶点和次顶点，以确保可靠的选择并提高触发性能。
The use of tracking information at the trigger level in the LHC Run II period is crucial for the trigger and data acquisition system and will be even more so as contemporary collisions that occur at every bunch crossing will increase in Run III. The Fast TracKer is part of the ATLAS trigger upgrade project; it is a hardware processor that will provide every Level-1 accepted event (100 kHz) and within 100μs, full tracking information for tracks with momentum as low as 1 GeV. Providing fast, extensive access to tracking information, with resolution comparable to the offline reconstruction, FTK will help in precise detection of the primary and secondary vertices to ensure robust selections and improve the trigger performance.