Keyword: kaon
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WEPAB186 Studies for the K12 High-Intensity Kaon Beam at CERN detector, experiment, simulation, target 3049
 
  • G.L. D’Alessandro, D. Banerjee, J. Bernhard, M. Brugger, N. Doble, L. Gatignon, A. Gerbershagen, R. Marchevski, B. Rae, S. Schuchmann, F.W. Stummer, M.W.U. Van Dijk
    CERN, Meyrin, Switzerland
  • S.T. Boogert, S.M. Gibson, L.J. Nevay
    JAI, Egham, Surrey, United Kingdom
 
  The NA62 experiment is a fixed target experiment located in the North Area of CERN and has as main goal the measurement of the branching ratio of the rare decay K±>pi+vv. The primary proton beam from the SPS accelerator interacts with the T10 beryllium target and the generated 75 GeV/c secondary particles, containing about 6% of positive kaons, are transported by the K12 beamline to the NA62 experiment. Studies in this paper present detailed simulations of the K12 beamline developed in both FLUKA and BDSIM codes, which reproduce the current configuration of K12 for the NA62 experiment. The beam optics parameters of K12 are studied in BDSIM and compared to MADX optics and tracking calculations. The models in FLUKA and BDSIM are used for beam studies and muon production at various locations along the beamline, and the parameters obtained from simulations are benchmarked against data recorded by the experiment. The impact of the Cherenkov kaon tagging detector (CEDAR) on the beam quality is calculated for two different gas compositions in view of a possible upgrade of the detector.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB186  
About • paper received ※ 17 May 2021       paper accepted ※ 01 July 2021       issue date ※ 27 August 2021  
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WEPAB187 The ENUBET Multi Momentum Secondary Beamline Design target, electron, proton, experiment 3053
 
  • E.G. Parozzi, N. Charitonidis
    CERN, Geneva, Switzerland
  • G. Brunetti, E.G. Parozzi, F. Terranova
    Universita Milano Bicocca, MILANO, Italy
  • A. Longhin, M. Pari, F. Pupilli
    INFN- Sez. di Padova, Padova, Italy
  • A. Longhin, M. Pari
    Univ. degli Studi di Padova, Padova, Italy
  • E.G. Parozzi, F. Terranova
    INFN MIB, MILANO, Italy
 
  The aim of neutrino physics for the next decades is to detect effects due to CP violation, mass hierarchy, and search for effects beyond the Standard Model predictions. Future experiments need precise measurements of the neutrino interaction cross-sections at the ~GeV/c regime, currently limited by the exact knowledge of the initial neutrino flux on a ~10-20% uncertainty level. The ENUBET project is proposing a novel facility, capable of constraining the neutrino flux normalization through the precise monitoring of the Ke3 (K±>e+pi0nu) decay products in an instrumented decay tunnel. ENUBET can also monitor muons from the two body kaon and pion decays (nu flux) and measure the neutrino energy with a 10% precision without relying on the event reconstruction at the neutrino detector. We present here a novel design based on a broad (4-8.5 GeV/c) momentum range secondary beamline, that widen the cross-section energy range that can be explored by ENUBET. In this poster, we discuss the target optimization studies and we show the early results on the new line’s optics and the layout design. We discuss the expected performance of this line and the forthcoming activities.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB187  
About • paper received ※ 13 May 2021       paper accepted ※ 29 July 2021       issue date ※ 14 August 2021  
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