Current status of fast reactor critical experiments

This report presents a current survey of experimental techniques and analyses in fast critical experiments for large fast reactors. It consists of four parts: (1) A review of the discrepancies observed between the calculated results and the integral data obtained by critical facilities, and the uncertainties contained in nuclear data, (2) A description of the procedures used and the problems encountered in critical experiments, especially for plutonium-fueled cores, (3) A survey of experimental techniques for the measurement of reactivity coefficients, sample reactivity worths, reaction rates, neutron spectra and kinetic parameters, (4) A discussion of problems in the analyses of experimental data. (author)