Two Proposals for Determination of Large Reactivity of Reactor

摘要

Two proposals for determination of large reactivity of reactors are presented. One is for large positive reactivity. The other is for large negative reactivity. Exising experimental methods for determination of large positive reactivity, the fuel addition metod and the neutron absorption substitution method were analyzed. It is found that both the experimental methods are possibly affected to the substantially alrge systematic error up to -20