Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/82621
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Type: Journal article
Title: Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run
Author: Jackson, P.
Soni, N.
White, M.
Citation: Journal of Instrumentation, 2013; 8(7):P07004-0-P07004-70
Publisher: Institute of Physics Publishing Ltd
Issue Date: 2013
ISSN: 1748-0221
1748-0221
Statement of
Responsibility: 
The ATLAS Collaboration
Abstract: 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. Triggerrate 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.
Keywords: Pattern recognition, cluster finding, calibration and fitting methods; performance of high energy physics detectors; accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics); analysis and statistical methods
Description: P. Jackson, N. Soni and M. J. White are part of The ATLAS Collaboration
Rights: © CERN 2013 for the benefit of the ATLAS collaboration, published under the terms of the Creative Commons Attribution 3.0 License by IOP Publishing Ltd and Sissa Medialab srl. Any further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation and DOI.
RMID: 0020133357
DOI: 10.1088/1748-0221/8/07/P07004
Appears in Collections:Chemistry and Physics publications

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