BENEFITS OF REACTOR PHYSICS EXPERIMENTS FOR THE HTGR INDUSTRIAL DEVELOPMENT - AN ATTEMPT TO A QUANTITATIVE APPROACH.

The available results of reactor physics experiments on High Temperature Gas-Cooled Reactors (HTGRs) and their accuracies are briefly reviewed. The physical quantities of interest are grouped into three categories; basic nuclear data, lattice parameters and integral design data. It is concluded that the economic incentive to new reactor physics experiments is small, and a previous careful analysis is recommended to those intending to perform such experiments.