Specifications of an accelerator for the soliton hybrid reactor (RHYS)

The soliton hybrid reactor is a concept of an Accelerator Driven System, with a design insuring a long lifetime without core interventions. Soliton reactors and “candle reactors” have been proposed in order to use reactors for very long periods without reprocessing or enrichment. s paper, we present the concept of hybrid soliton reactor. In this system, the constant displacement of the beam during the 30 years lifetime implies lower constraints on the window compared to other accelerator-driven systems. During its lifetime, the reactor can present constant profiles in chemical and isotopic composition and in power production if the beam of protons is maintained within certain limits. This is the soliton-like behavior. Using a mathematical analysis of the problem, we have shown that the solution of the equations presents a solitary wave behavior which is stable if the accelerator intensity is sufficiently low or if the velocity of the neutron source is sufficiently high. We have simulated these two behaviors with a GEANT III Monte Carlo program: a soliton behavior, and a one which may become unstable when the intensity is too large or the velocity too small. These preliminary considerations allow us to describe some specifications concerning an accelerator which can drive such a system.