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    STP1608

    Using Total Monte Carlo to Calculate the Full Covariance Matrix of a Neutron Spectrum

    Published: 2018


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    Abstract

    A new scheme is proposed for calculating the covariance matrix of an a priori neutron flux spectrum using the Total Monte Carlo method. This covariance matrix can be used to improve the adjustment of calculated spectra to dosimetry measurements in a more physically realistic way. We have taken an example experiment performed at the High Flux Reactor to successfully demonstrate the application of this covariance matrix to spectrum adjustment procedures using a modified J1 unfolding algorithm.

    Keywords:

    covariance matrix, spectrum adjustment, neutron spectrum, Total Monte Carlo (TMC)


    Author Information:

    Asquith, Nicola L.
    Nuclear Research and Consultancy Group (NRG), Research and Innovation, Petten,

    van der Marck, Steven C.
    Nuclear Research and Consultancy Group (NRG), Research and Innovation, Petten,


    Committee/Subcommittee: E10.05

    DOI: 10.1520/STP160820170072