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Search: (hsv:(NATURVETENSKAP)) pers:(Hellman Sten) > (2005-2009)

  • Result 1-5 of 5
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1.
  • Aad, G., et al. (author)
  • The ATLAS Experiment at the CERN Large Hadron Collider
  • 2008
  • In: Journal of Instrumentation. - 1748-0221. ; 3:S08003
  • Research review (peer-reviewed)abstract
    • The ATLAS detector as installed in its experimental cavern at point 1 at CERN is described in this paper. A brief overview of the expected performance of the detector when the Large Hadron Collider begins operation is also presented.
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3.
  • Bohm, Christian, et al. (author)
  • Pre-Production Validation of the ATLAS Level-1 Calorimeter Trigger System
  • 2006
  • In: IEEE Transactions on Nuclear Science. - 0018-9499 .- 1558-1578. ; 53:3, s. 859-863
  • Journal article (peer-reviewed)abstract
    • The Level-1 Calorimeter Trigger is a major part of the first stage of event selection for the ATLAS experiment at the LHC. It is a digital, pipelined system with several stages of processing, largely based on FPGAs, which perform programmable algorithms in parallel with a fixed latency to process about 300 Gbyte/s of input data. The real-time output consists of counts of different types of trigger objects and energy sums. Prototypes of all module types have been undergoing intensive testing before final production during 2005. Verification of their correct operation has been performed stand-alone and in the ATLAS test-beam at CERN. Results from these investigations will be presented, along with a description of the methodology used to perform the tests.
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4.
  • Hellman, Sten, et al. (author)
  • A Strategy to Detect and Identify Gluino R-hadrons with the ATLAS Experiment at the LHC
  • 2005
  • In: ATL-COM-PHYS. - Geneva : CERN. ; :065
  • Journal article (peer-reviewed)abstract
    • The potential of the ATLAS detector at the LHC to detect and quantify the production of gluino R-hadrons is investigated. Using QCD-based models and a full detector simulation, a search strategy is outlined which uses the property that gluino R-hadrons can change the sign of their charge when propagating through matter. By comparing charged tracks in the Inner and Muon tracking systems, it is shown that this observable can be used to both detect and identify gluino R-hadrons of masses up to around 1 TeV in early LHC running
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5.
  • Åsman, Barbro, et al. (author)
  • The ATLAS Level-1 Calorimeter Trigger
  • 2008
  • In: Journal of Instrumentation. - 1748-0221. ; :3, s. P03001-
  • Journal article (peer-reviewed)abstract
    • The ATLAS Level-1 Calorimeter Trigger uses reduced-granularity information from all the ATLAS calorimeters to search for high transverse-energy electrons, photons, τ leptons and jets, as well as high missing and total transverse energy. The calorimeter trigger electronics has a fixed latency of about 1 μs, using programmable custom-built digital electronics. This paper describes the Calorimeter Trigger hardware, as installed in the ATLAS electronics cavern.
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  • Result 1-5 of 5

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