Performance of the ATLAS Trigger System in 2010
Performance of the ATLAS Trigger System in 2010
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DOI：
10.1140/epjc/s10052-011-1849-1
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发表时间：
2012-01-01
影响因子：
4.4
通讯作者：
Zwalinski, L.
中科院分区：
文献类型：
--
作者：
Aad, G.;Abbott, B.;Zwalinski, L.
大型强子对撞机产生了根S=7TeV的质子-质子碰撞和根(NN)-N-S=2.76TeV的重离子碰撞，并使用ATLAS实验的触发系统在2010年记录了这些结果。大型强子对撞机设计的最大束团交叉速率为40 MHz，而ATLAS触发系统设计为每秒记录大约200个这样的信号。触发系统通过快速识别Muon、电子、光子、tau轻子、JET和B介子候选的签名以及使用全局事件签名(如丢失的横向能量)来选择事件。概述了ATLAS触发系统、该系统在2010年期间的演变以及基于2010年碰撞数据的触发系统组件和选择的性能。简要概述了2011年触发系统的计划。
Proton-proton collisions at root s = 7 TeV and heavy ion collisions at root(NN)-N-s = 2.76 TeV were produced by the LHC and recorded using the ATLAS experiment's trigger system in 2010. The LHC is designed with a maximum bunch crossing rate of 40 MHz and the ATLAS trigger system is designed to record approximately 200 of these per second. The trigger system selects events by rapidly identifying signatures of muon, electron, photon, tau lepton, jet, and B meson candidates, as well as using global event signatures, such as missing transverse energy. An overview of the ATLAS trigger system, the evolution of the system during 2010 and the performance of the trigger system components and selections based on the 2010 collision data are shown. A brief outline of plans for the trigger system in 2011 is presented.