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Publication Detail
Comparison of measurement and simulation of ATLAS cavern radiation background
  • Publication Type:
    Journal article
  • Authors:
    Heijne E, Koi T, Leroy C, Oberlack H, Pospisil S, Sherwood P, Shupe M, Solc J, Suk M, Takai H, Turecek D, Vykydal Z, Young C
  • Publisher:
    IOP Publishing Ltd
  • Publication date:
  • Journal:
    Journal of Instrumentation
  • Volume:
  • Article number:
  • Status:
  • Print ISSN:
  • Language:
  • Keywords:
    Science & Technology, Technology, Instruments & Instrumentation, Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Gamma detectors (scintillators, CZT, HPGe, HgI etc), Models and simulations, Particle tracking detectors (Solid-state detectors), TIMEPIX
  • Notes:
    c 2022 CERN. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Sixteen Medipix2 pixel detector based (MPX) devices were operated at various positions within the ATLAS detector and cavern continuously from early 2008 up to 2013. In addition to photons, each MPX detector is capable to detect charged particles, and neutrons as it is covered with a mask of converter materials dividing its area into regions sensitive to thermal or fast neutrons. The MPX detector network was effectively used for real-time measurements of the spectral characteristics and composition of complex radiation fields in ATLAS. This article reports comparison of the results of measurements performed with MPX detectors during the LHC operation period in 2010 and 2011 with Monte Carlo simulations results from the FLUGG and GCALOR codes. For the purpose of this comparison, the MPX detectors were operated in tracking mode with low threshold (8-10 keV) allowing one to distinguish among particle categories based on the recognition of track patterns left by the particles in the MPX sensitive layer. The comparison of measurements with simulations shows that the agreement between measured and simulated data is satisfactory in most cases within a factor of two.
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