Neutron measurement of the LHCF experiment

T. Mase, O. Adriani, L. Bonechi, M. Bongi, G. Castellini, R. D'Alessandro, M. Haguenauer, Y. Itow, K. Kasahara, D. Macina, K. Masuda, Y. Matsubara, H. Menjo, Y. Muraki, M. Nakai, P. Papini, A. L. Perrot, S. Ricciariniz, T. Sako, Y. ShimizuK. Taki, T. Tamura, Shoji Torii, A. Tricomi, W. C. Turner, A. Viciani, K. Yoshida

    研究成果: Conference contribution


    LHCf is an experiment dedicated to the measurement of neutral particles emitted in the very forward region of LHC collisions. The physics goal is to provide data for calibrating the hadron interaction models that are used in studies of extremely high-energy cosmic rays. LHCf can discriminate the existing models by the measurement of gamma-rays. Furthermore, because measurement of neutrons gives information of elasticity, it is complementary to the measurement of gamma-rays. The performances of the LHCf detectors for hadron showers were investigated at the CERN SPS H4 beam line in 2007. The tests were performed using 150MeV and 350 GeV protons. The detection efficiencies of 11% and 26 %, the energy resolutions of 21% and 27% are obtained for each energy. These results are in agreement with the results of full Monte Carlo simulation. We also simulated for the energy range at the LHC operation and found the efficiency and resolution are almost independent of incident energy over 1 TeV. At 3TeV, the detection efficiency and the resolution were about 20% and 40 %, respectively. We also found that the number of shower particles contained in a neutron event is approximately 30% with respect to that of an electron induced shower with the same energy.

    ホスト出版物のタイトル31st International Cosmic Ray Conference, ICRC 2009
    出版社University of Lodz
    出版ステータスPublished - 2009
    イベント31st International Cosmic Ray Conference, ICRC 2009 - Lodz
    継続期間: 2009 7月 72009 7月 15


    Other31st International Cosmic Ray Conference, ICRC 2009

    ASJC Scopus subject areas

    • 核物理学および高エネルギー物理学


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