STP1228

    The Materials Dosimetry Reference Facility

    Published: Jan 1994


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    Abstract

    The Materials Dosimetry Reference Facility (MDRF) is a new reactor-driven reference neutron field for reactor dosimetry calibrations and methods validation. Basically, the facility design is a steel cylinder (15-cm o.d., 5-cm i.d.) mounted in the pool close to the core of the Ford Nuclear Reactor at the Phoenix Memorial Laboratory of the University of Michigan. Two spectrum options are available: one with a near-1/E distribution below 0.1 MeV, and the other with a 10B filtered spectrum that cuts off below 4 keV. Fast-neutron fluence rates (nominally 2.8×l011cm−2s−1, E>1 MeV) are established by means of neutron fluence transfer from the 252Cf Fission Neutron Irradiation Facility at NIST. Neutron fluences for sample irradiations (conventional maximum 2×l016n/cm2, E>1 MeV) will be certified to uncertainties of ±(5−6)%, lσ. The neutron spectrum in the facility is established on the basis of neutron transport calculations and spectral index measurements, the latter with threshold, low-energy activation, and fission reactions. The results of calculations and measurements are reported in this paper.

    Keywords:

    benchmark, dosimetry, neutron, nuclear, radiation damage


    Author Information:

    Hawari, AI
    Graduate Students, The University of Michigan, Ann Arbor, MI

    Venkataraman, R
    Graduate Students, The University of Michigan, Ann Arbor, MI

    Fleming, R
    Professor and Director of Phoenix Memorial Laboratory, The University of Michigan, Ann Arbor, MI

    Charles, E
    Staff physicists, National Institute of Standards and Technology, Gaithersburg, MD

    Grundl, J
    Staff physicists, National Institute of Standards and Technology, Gaithersburg, MD

    McGarry, ED
    Staff physicists, National Institute of Standards and Technology, Gaithersburg, MD


    Paper ID: STP15134S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP15134S


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