Measurement techniques for fusion blanket neutronics experiments

A variety of techniques to measure the nuclear parameters, such as tritium production rate, neutron spectrum, reaction rate and gamma-ray heating, in a simulated fusion blanket assembly have been developed or introduced through the JAERI/USDOE Collaborative Program on Fusion Blanket Neutronics. The features of those techniques are summarized and discussed with the experimental error. The present measurement techniques provided data with error ranges of 3–5% for tritium production, 5–10% for the neutron spectrum, 3–6% for the activation reaction and 10–20% for the gamma-ray heating rate.