Volume 9, Issue 4 (April 2012)

    Fitting Method for Spectrum Deduction in High-Energy Neutron Field Induced by GeV-Protons Using Experimental Reaction-Rate Data

    (Received 31 May 2011; accepted 1 February 2012)

    Published Online: 2012

    CODEN: JAIOAD

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    Abstract

    The Japanese and American Study of Muon Interaction and Neutron detection (JASMIN) collaboration, has been conducting shielding experiments using the Fermilab anti-proton target station (Pbar) shielding assembly. A multi-foil technique was used to measure the high energy neutron spectra, in the range of 1 to 100 MeV, for the target station shielding configuration. The neutron spectra were de-convoluted using a new fitting method. This method is based on the assumption that a neutron spectrum can be expressed as a simple sum of two exponentials. The validity of the fitting method was confirmed by comparison with the results obtained using SAND-II computer code and theoretical calculations. Finally, it was found that there are simple correlations between reaction rates and the adjustable parameters in the fitting function.


    Author Information:

    Kasugai, Y.
    Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken

    Matsuda, N.
    Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken

    Sakamoto, Y.
    Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken

    Nakashima, H.
    Japan Atomic Energy Agency, Tokai-mura, Ibaraki-ken

    Yashima, H.
    Research Reactor Institute, Kyoto Univ., Osaka,

    Matsumura, H.
    High Energy Accelerator Organization, Tsukuba, Ibaraki

    Iwase, H.
    High Energy Accelerator Organization, Tsukuba, Ibaraki

    Hirayama, H.
    High Energy Accelerator Organization, Tsukuba, Ibaraki

    Mokhov, N.
    Fermi National Accelerator Laboratory, Batavia, IL

    Leveling, A.
    Fermi National Accelerator Laboratory, Batavia, IL

    Boehnlein, D.
    Fermi National Accelerator Laboratory, Batavia, IL

    Vaziri, K.
    Fermi National Accelerator Laboratory, Batavia, IL

    Lauten, G.
    Fermi National Accelerator Laboratory, Batavia, IL

    Oishi, K.
    Shimizu Corporation, Tokyo,

    Nakamura, T.
    Tohoku Univ., Aoba, Aramaki, Aoba-ku, Sendai, Miyagi


    Stock #: JAI104074

    ISSN: 1546-962X

    DOI: 10.1520/JAI104074

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    Author
    Title Fitting Method for Spectrum Deduction in High-Energy Neutron Field Induced by GeV-Protons Using Experimental Reaction-Rate Data
    Symposium , 0000-00-00
    Committee E10