Abstract
AbstractAt the Kyoto University Critical Assembly (KUCA), the accelerator-driven system (ADS) is composed of a solid-moderated and solid-reflected core (A-core) and a pulsed-neutron generator (14 MeV neutrons) or the fixed-filed alternating gradient (FFAG) accelerator (100 MeV protons). At KUCA, two external neutron sources, including 14 MeV neutrons and 100 MeV protons, are separately injected into the A-core, and employed for carrying out the ADS experiments. With the combined use of the A-core and two external neutron sources, basic and feasibility studies of ADS have been engaged in the examination of neutronics of ADS, through the measurements of statics and kinetics parameters of reactor physics, including subcritical multiplication factor, subcriticality, prompt neutron decay constant, effective delayed neutron fraction, neutron spectrum, and reaction rates.
Highlights
Cheol Ho Pyeon AbstractAt the Kyoto University Critical Assembly (KUCA), the acceleratordriven system (ADS) is composed of a solid-moderated and solid-reflected core (A-core) and a pulsed-neutron generator (14 MeV neutrons) or the fixed-filed alternating gradient (FFAG) accelerator (100 MeV protons)
The Kyoto University Critical Assembly (KUCA [1]; Fig. 1.1) is a multi-core type critical assembly developed by Kyoto University, Japan, as a facility that can be used by researchers from all the universities in Japan to carry out studies in the field of reactor physics
The A-core can be used in combination with the pulsed-neutron generator, and it is used for carrying out studies on ADS and fission-fusion hybrid reactor systems
Summary
The Kyoto University Critical Assembly (KUCA [1]; Fig. 1.1) is a multi-core type critical assembly developed by Kyoto University, Japan, as a facility that can be used by researchers from all the universities in Japan to carry out studies in the field of reactor physics. KUCA was established in 1974, as one of the main facilities of the Research Reactor Institute, Kyoto University (KURRI; currently, Institute for Integrated Radiation and Nuclear Science: KURNS), located at Kumatori-cho, Sennan-gun, Osaka, Japan. KUCA is a multi-core-type critical assembly consisting of two solid-moderated cores (A- and B-cores) and one light-water-moderated core (C-core). Core only can attain the critical state at a given time because the assembly is equipped with a single control mechanism that prevents the simultaneous operation of multiple cores. Experimental and numerical studies on the validation and verification of nuclear data and nuclear calculation codes and on the development of new detector systems are conducted
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