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Thermal and Epithermal fluence Rate Measurements in Multipurpose Reactors: Application of a Least-Squares Fitting Code RESDET to Obtain Thermal and Epithermal Fluence Rates from Measured Reaction Rates

Voorbraak, W. P.
Senior Scientist,MMI-Monitoring, Netherlands Research and Consultancy Group NRG,

Freudenreich, W. E.
Senior Scientist,MMI-Monitoring, Netherlands Research and Consultancy Group NRG,

Leendertse, G. P.
Senior Scientist,Energy Research Foundation ECN,

Aaldijk, J. K.
Senior Scientist,MMI-Monitoring, Netherlands Research and Consultancy Group NRG,

Pages: 6    Published: Jan 2007

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Source: STP1490-EB

Abstract

A generalized least-squares, two group neutron spectrum adjustment code is presented that uses measured reaction rates of activation foils and thermal and epithermal energy cross-section data to calculate the thermal and epithermal fluence rates in case of well-moderated neutron spectra. The code uses the covariance matrices of the measurements and cross sections to produce the covariance matrix of the calculated thermal and epithermal fluence rates. The report also gives some application examples of the code.

Keywords:
thermal fluence rate, epithermal fluence rate, activation foils, covariance matrix

Paper ID: STP45437S
Committee/Subcommittee: E10.02
DOI: 10.1520/STP45437S
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