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

M Aaboud, Torsten Åkesson, Simona Bocchetta, Eric Corrigan, Caterina Doglioni, Eva Brottmann Hansen, Vincent Hedberg, Göran Jarlskog, Charles Kalderon, Edgar Kellermann, Balazs Konya, Else Lytken, Katja Mankinen, Ulf Mjörnmark, R. Poettgen, Trine Poulsen, Oxana Smirnova, Oleksandr Viazlo, L. Zwalinski, ATLAS Collaboration

Research output: Contribution to journalArticlepeer-review

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. © 2018 CERN for the benefit of the ATLAS collaboration.
Original languageEnglish
Article numberP12006
JournalJournal of Instrumentation
Volume13
Issue number12
DOIs
Publication statusPublished - 2018

Subject classification (UKÄ)

  • Accelerator Physics and Instrumentation
  • Subatomic Physics

Free keywords

  • Accelerator modelling and simulations (multi-particle dynamics
  • Radiation calculations
  • Simulation methods and programs
  • single-particle dynamics)
  • Colliding beam accelerators
  • Intelligent systems
  • Tellurium compounds
  • ATLAS detectors
  • ATLAS experiment
  • Interaction rate
  • Large Hadron collider LHC
  • Modelling and simulations
  • Residual gas pressure
  • Single-particle dynamics
  • Monte Carlo methods

Fingerprint

Dive into the research topics of 'Comparison between simulated and observed LHC beam backgrounds in the ATLAS experiment at Ebeam=4 TeV'. Together they form a unique fingerprint.

Cite this