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Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
ATLAS collaboration
2013
发表期刊JOURNAL OF INSTRUMENTATION
卷号8
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
摘要This paper presents a summary of beam-induced backgrounds observed in the ATLAS detector and discusses methods to tag and remove background contaminated events in data. Trigger-rate based monitoring of beam-related backgrounds is presented. The correlations of backgrounds with machine conditions, such as residual pressure in the beam-pipe, are discussed. Results from dedicated beam-background simulations are shown, and their qualitative agreement with data is evaluated. Data taken during the passage of unpaired, i.e. non-colliding, proton bunches is used to obtain background-enriched data samples. These are used to identify characteristic features of beam-induced backgrounds, which then are exploited to develop dedicated background tagging tools. These tools, based on observables in the Pixel detector, the muon spectrometer and the calorimeters, are described in detail and their efficiencies are evaluated. Finally an example of an application of these techniques to a monojet analysis is given, which demonstrates the importance of such event cleaning techniques for some new physics searches.
关键词LIQUID ARGON CALORIMETER LHC
学科领域Instruments & Instrumentation
DOI10.1088/1748-0221/8/07/P07004
收录类别SCI
语种英语
WOS类目Instruments & Instrumentation
WOS记录号WOS:000322572900015
引用统计
被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213572
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run[J]. JOURNAL OF INSTRUMENTATION,2013,8.
APA ATLAS collaboration.(2013).Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run.JOURNAL OF INSTRUMENTATION,8.
MLA ATLAS collaboration."Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run".JOURNAL OF INSTRUMENTATION 8(2013).
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