Accelerator-based facility design in association with nuclear data

Abstract

Abstract. At present, large research infrastructures using high energy and high beam intensity accelerator have been almost realized as examples of SINQ, J-PARC and SNS. In the design study of such accelerator facilities, it is required to seek the best neutronic performance and assure engineering feasibilities such as heat removal from the target and its surroundings, material selection to have enough life-time under radiation environment for reasonable operation duration. It is also important to design sophisticated maintenance scheme including remote handling to treat highly activated components, and optimal radiation shield around them. The roles of nuclear data to these aspects and perspectives are reviewed through the design of J-PARC spallation neutron source.

Validation of JENDL High-Energy File through Analyses of Spallation Experiments at Incident Proton Energies from 0.5 to 2.83 GeV

“…As an example, the margin of a factor of two was given to the neutronics calculation with PHITS or MCNPX for the spallation neutron source facility JSNS. 31) The outputs of the present work are expected to be utilized in the future update of the JENDL high-energy file. …”