1 Studies on Accelerator - Driven Transmutation Systems

Research and development on transmutation of long-lived radioactive nuclides are being carried out with an emphasis placed on the dedicated accelerator-driven systems at the Japan Atomic Energy Research Institute (JAERI) under the Japanese long-term program for research and development on partitioning and transmutation technology (OMEGA Programme). The preliminary design of the sodium-cooled solid system has been developed as a reference system based on the current LMFBR technology. Concurrently with the study on the sodium-cooled system, we made a preliminary design study of leadbismuth cooled system as an option. Transient responses of temperatures and stresses due to accelerator beam trips were evaluated for the fuel pin and the beam window of the proposed experimental facilities