タムラ タダヒサ   Tamura Tadahisa
  田村 忠久
   所属   神奈川大学  工学部 物理学教室
    神奈川大学大学院  工学研究科 工学専攻(応用物理学領域)
   職種   教授
言語種別 日本語
発行・発表の年月 2011/02
形態種別 学術雑誌
査読 査読あり
標題 Monte Carlo study of forward π0 production spectra to be measured by the LHCf experiment for the purpose of benchmarking hadron interaction models at 1017 eV
執筆形態 共著
掲載誌名 Astroparticle Physics
巻・号・頁 34(7),513-520頁
著者・共著者 H. Menjo, O. Adriani, L. Bonechi, M. Bongi, G. Castellini, R. D’Alessandro, A. Faus, K. Fukui, M. Haguenauer, Y. Itow, K. Kasahara, K. Kawade, D. Macina, T. Mase, K. Masuda, Y. Matsubara, G. Mitsuka, M. Mizuishi, Y. Muraki, M. Nakai, P. Papini, A.-L. Perrot, S. Ricciarini, T. Sako, Y. Shimizu, K. Taki, T. Tamura, S. Torii, A. Tricomi, W.C. Turner, J. Velasco, A. Viciani, K. Yoshida
概要 The LHCf experiment aims to improve knowledge of forward neutral particle production spectra at the LHC energy which is relevant for the interpretation of air shower development of high energy cosmic rays. Two detectors, each composed of a pair of sampling and imaging calorimeters, have been installed at the forward region of IP1 to measure π0 energy spectra above 600 GeV. In this paper, we present a Monte Carlo study of the π0 measurements to be performed with one of the LHCf detectors for proton–proton collisions at sqrt(s) = 14 TeV. In approximately 40 min of operation at luminosity 0.8x1029 cm-2 s-1 during the beam commissioning phase of LHC, about 1.5 × 104 π0 events are expected to be obtained at two transverse positions of the detector. The backgrounds from interactions of secondary particles with beam pipes and interactions of beam particles with residual gas in the beam pipes are expected to be less than 0.1% of the signal from π0s. We also discuss the capability of LHCf measurements to discriminate between the various hadron interaction models that are used for simulation of high energy air showers, such as DPMJET3.03, QGSJETII-03, SIBYLL2.1 and EPOS1.99.