Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: tracker properties
Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: tracker properties
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DOI：
10.1088/1748-0221/12/05/p05002
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发表时间：
2017-02
期刊：
影响因子：
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通讯作者：
Atlas Collaboration
中科院分区：
文献类型：
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作者：
Atlas Collaboration
本文介绍了在大型强子对撞机（LHC）质子-质子、质子-铅和铅-铅碰撞中，作为ATLAS内部探测器一部分的ATLAS跃迁辐射跟踪器（TRT）在不同数据采集条件下的跟踪性能参数。使用在LHC运行的第一阶段（运行1）收集的数据研究性能，并与Monte Carlo模拟进行比较。TRT的性能，与两种不同的气体混合物（氙基和氩基）和它的依赖TRT占有率的操作。这些研究表明，TRT的跟踪性能对于两种气体混合物是相似的，并且TRT对粒子动量分辨率做出了重大贡献，直到高粒子密度。
The tracking performance parameters of the ATLAS Transition Radiation Tracker (TRT) as part of the ATLAS inner detector are described in this paper for di ff erent data-taking conditions in proton–proton, proton–lead and lead–lead collisions at the Large Hadron Collider (LHC). The performance is studied using data collected during the first period of LHC operation (Run 1) and is compared with Monte Carlo simulations. The performance of the TRT, operating with two di ff erent gas mixtures (xenon-based and argon-based) and its dependence on the TRT occupancy is presented. These studies show that the tracking performance of the TRT is similar for the two gas mixtures and that a significant contribution to the particle momentum resolution is made by the TRT up to high particle densities.