Comparison between simulated and observed LHC beam backgrounds in the ATLAS experiment at Ebeam=4 TeV



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H
et al (show 2873 more authors) (2018) Comparison between simulated and observed LHC beam backgrounds in the ATLAS experiment at Ebeam=4 TeV JOURNAL OF INSTRUMENTATION, 13 (12). P12006-. ISSN 1748-0221, 1748-0221

Access the full-text of this item by clicking on the Open Access link.

Abstract

Results of dedicated Monte Carlo simulations of beam-induced background (BIB) in the ATLAS experiment at the Large Hadron Collider (LHC) are presented and compared with data recorded in 2012. During normal physics operation this background arises mainly from scattering of the 4 TeV protons on residual gas in the beam pipe. Methods of reconstructing the BIB signals in the ATLAS detector, developed and implemented in the simulation chain based on the \textsc{Fluka} Monte Carlo simulation package, are described. The interaction rates are determined from the residual gas pressure distribution in the LHC ring in order to set an absolute scale on the predicted rates of BIB so that they can be compared quantitatively with data. Through these comparisons the origins of the BIB leading to different observables in the ATLAS detectors are analysed. The level of agreement between simulation results and BIB measurements by ATLAS in 2012 demonstrates that a good understanding of the origin of BIB has been reached.

Item Type: Article
Additional Information: 44 pages in total, author list starting on page 28, 14 figures, 4 tables, published in JINST, figures available on https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/DAPR-2017-01
Uncontrolled Keywords: Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics), Radiation calculations, Simulation methods and programs
Depositing User: Symplectic Admin
Date Deposited: 18 Dec 2018 11:35
Last Modified: 22 May 2026 20:47
DOI: 10.1088/1748-0221/13/12/P12006
Open Access URL: http://iopscience.iop.org/article/10.1088/1748-022...
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3030200
Disclaimer: The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.