Performance of the CMS Level-1 Trigger
Performance of the CMS Level-1 Trigger
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DOI：
10.22323/1.174.0508
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发表时间：
2013-02
期刊：
影响因子：
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通讯作者：
J. Brooke;On behalf of the Atlas Collaboration
中科院分区：
文献类型：
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作者：
J. Brooke;On behalf of the Atlas Collaboration
CMS实验的第一级触发器由定制的电子设备组成，这些电子设备处理来自电磁和强子量热计的数据以及三种μ子探测器技术，以便从LHC碰撞中选择最有趣的事件，例如与希格斯玻色子的产生和衰变一致的事件。由这个级别-1触发器选择的事件的速率必须从光束交叉频率减少到不超过100 kHz，进一步处理可以发生，一个主要的挑战，因为大型强子对撞机的瞬时光度增加了6个数量级，因为开始的操作超过6 - 10 - 33厘米2秒-1今天。在这里介绍的性能水平-1触发器，在率和效率的主要对象和触发算法，测量从大型强子对撞机质子碰撞在7和8 TeV的质心能量。
The first level trigger of the CMS experiment is comprised of custom electronics that process data from the electromagnetic and hadron calorimeters and three technologies of muon detectors in order to select the most interesting events from LHC collisions, such as those consistent with the production and decay of the Higgs boson. The rate of events selected by this Level-1 trigger must be reduced from the beam crossing frequency to no more than 100 kHz further processing can occur, a major challenge since the LHC instantaneous luminosity has increased by six orders of magnitude since the start of operations to more than 6 10 33 cm 2 s 1 today. The performance of the Level-1 trigger, in terms of rates and efficiencies of the main objects and trigger algorithms, as measured from LHC proton collisions at 7 and 8 TeV center-of-mass energies is presented here.