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    STP1398

    Improvement of Reactor Dosimetry for Irradiation Tests in the Experimental Fast Reactor JOYO

    Published: 0


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    Abstract

    Reactor dosimetry by the foil activation method and three dimensional diffusion or two dimensional transport calculation have been performed to characterize the neutron field of JOYO. In order to improve the accuracy of the neutron flux calculation for each irradiation test, the JOYO core management code system will be upgraded. In addition, a fine flux distribution inside the irradiation rig was analyzed by the Monte Carlo code. The helium accumulation method has been developed as a neutron fluence monitoring technique to be utilized for long-term irradiation tests. The system was calibrated in the well characterized fast neutron fields of YAYOI.

    Keywords:

    reactor dosimetry, fast reactor, JOYO, irradiation test, flux calculation, core management, Monte Carlo code, helium accumulation fluence monitor


    Author Information:

    Sekine, T
    Irradiation Center, Oarai Engineering Center, Japan Nuclear Cycle Development Institute, Ibaraki-ken,

    Aoyama, T
    Irradiation Center, Oarai Engineering Center, Japan Nuclear Cycle Development Institute, Ibaraki-ken,

    Yoshida, A
    Irradiation Center, Oarai Engineering Center, Japan Nuclear Cycle Development Institute, Ibaraki-ken,

    Suzuki, S
    Irradiation Center, Oarai Engineering Center, Japan Nuclear Cycle Development Institute, Ibaraki-ken,


    Committee/Subcommittee: E10.01

    DOI: 10.1520/STP13606S