Special issue on accelerator-driven system benchmarks at Kyoto University Critical Assembly

Abstract

The accelerator-driven system (ADS) had been proposed for producing energy and transmuting minor actinide and long-lived fission products. ADS has attracted worldwide attention in recent years because of its superior safety characteristics and potential for burning plutonium and nuclear waste. At the Institute for Integrated Radiation and Nuclear Science, Kyoto University, a series of ADS experiments with 14 MeV neutrons was launched in fiscal year 2003 at the Kyoto University Critical Assembly (KUCA). Also, the high-energy neutrons generated by the interaction of 100 MeV protons with tungsten target was injected into the KUCA core on March 2009. The ADS experiments with 100 MeV protons obtained from the FFAG accelerator have been carried out to investigate the neutron characteristics of ADS. This special issue aims at concentrating on experimental analyses for the ADS benchmarks at KUCA on the basis of most recent advances in the development of computational methods, and contributing to academic progress for ADS research field in the future.

Research on the Measurement Method of the Prompt Neutron Decay Constant Based on LHS-DMD-Rossi-Alpha

“…An essential step in the simulation and analysis work of the Rossi-alpha method is obtaining the neutron pulse time series chain. By employing RMC3.5, simulation models for the 3 He proportional counter and the KUCA facility [18] are established, as shown in Figure 3. The sequence data of neutron pulses generated from nuclear reactions between neutrons and 3 He gas 3 He(n, p)T within the detector are recorded and saved in ASCII format for subsequent processing [19][20][21].…”

Introduction

“…All experimental data of ADS were compiled as "ADS experimental benchmarks at KUCA," publishing the KURNS technical reports [81][82][83][84][85], and employed as "Coordinated (Collaborative) Research Projects (CRP) of Accelerator-Driven System and Low-Enriched Uranium Cores in ADS" organized by the International Atomic Energy Agency (IAEA). Through the CRP programs of ADS by IAEA ranging between 2007 and 2018, experimental data of ADS at KUCA were shared with all IAEA state members and used for conducting the validation and verification of nuclear calculation codes and major nuclear data libraries.…”