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arXiv 0910.0847physics.ins-dethep-ex
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利用宇宙数据调试ATLAS像素探测器的结果

Results from the Commissioning of the ATLAS Pixel Detector with Cosmic data

E. Galyaev

摘要:

ATLAS像素探测器是欧洲核子研究中心大型强子对撞机上ATLAS实验的最里面的探测器。ATLAS硅像素探测器具有约8000万个读出通道,是一种高接受度、高分辨率、低噪声的跟踪设备。为了满足严格的轨道重建要求,像素检测器在带电轨道模式识别能力方面提供了所需的改进,它在很大程度上定义了ATLAS有效解析主顶点和次顶点以及执行发现新物理所必需的高效风味标记的能力。作为2007年7月安装在ATLAS的最后一个子系统,像素探测器成功地连接,调试和现场测试,同时满足了非常紧张的时间表,并准备在LHC的预计开启时获取数据。自2008年秋季以来,像素探测器已被包括在组合ATLAS探测器操作中,收集宇宙μ子数据。从像素探测器的安装和调试的细节,以及校准程序和收集的宇宙数据所获得的结果的细节,提出了与探测器状态的摘要。

英文摘要:

The ATLAS pixel detector is the innermost detector of the ATLAS experiment at the Large Hadron Collider at CERN. With approximately 80 million readout channels, the ATLAS silicon pixel detector is a high-acceptance, high-resolution, low-noise tracking device. Providing the desired refinement in charged track pattern recognition capability in order to meet the stringent track reconstruction requirements, the pixel detector largely defines the ability of ATLAS to effectively resolve primary and secondary vertices and perform efficient flavor tagging essential for discovery of new physics. Being the last sub-system installed in ATLAS by July 2007, the pixel detector was successfully connected, commissioned, and tested in situ while meeting an extremely tight schedule, and was ready to take data upon the projected turn-on of the LHC. Since fall 2008, the pixel detector has been included in the combined ATLAS detector operation, collecting cosmic muon data. Details from the pixel detector installation and commissioning, as well as details on calibration procedures and the results obtained with collected cosmic data, are presented along with a summary of the detector status.

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