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arXiv 1506.05046physics.ins-dethep-ex
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大型强子对撞机CMS像素探测器的标定

Calibration of the CMS Pixel Detector at the Large Hadron Collider

Tamas Almos Vami

摘要:

紧凑型μ子螺线管(CMS)探测器是欧洲核子研究中心大型强子对撞机(LHC)重建高能粒子相互作用产物的两个通用探测器之一。硅像素探测器是CMS跟踪系统的最内部组件。它以高分辨率在三个点上确定来自相互作用区域的带电粒子的轨迹,从而能够在跟踪器中进行精确的动量和碰撞参量测量。像素探测器暴露于LHC中粒子碰撞产生的强烈电离辐射。这种辐射可能导致传感器的暂时或永久故障,并可能降低检测器的效率。我们已经制定了程序来纠正这些影响。在本文中,我们提出的故障类型和离线校准程序。我们还将在2012年展示探测器的效率和分辨率。

英文摘要:

The Compact Muon Solenoid (CMS) detector is one of two general-purpose detectors that reconstruct the products of high energy particle interactions at the Large Hadron Collider (LHC) at CERN. The silicon pixel detector is the innermost component of the CMS tracking system. It determines the trajectories of charged particles originating from the interaction region in three points with high resolution enabling precise momentum and impact parameter measurements in the tracker. The pixel detector is exposed to intense ionizing radiation generated by particle collisions in the LHC. This irradiation could result in temporary or permanent malfunctions of the sensors and could decrease the efficiency of the detector. We have developed procedures in order to correct for these effects. In this paper, we present the types of malfunctions and the offline calibration procedures. We will also show the efficiency and the resolution of the detector in 2012.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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