Feedback Effects

Подпись: Fig. 1.11. A basic reactor feedback loop.

It has been shown in preceding sections that one can predict the power generation level from the reactivity, and that temperatures can be predicted from this power level. It has been noted that the temperatures affect the reactivity through variations in the cross sections which determine the neutron behavior. Thus a complete feedback path exists (Fig. 1.11). It is necessary to know how reactivity depends on temperatures and how this dependence may be affected by the reactor and plant design.