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Neutron Source Engineering Lab
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The lab produces neutrons with research reactors and accelerators and studies how to use them safely and to full effect.

AboutAbout the lab
Making safe, full use of research reactors and accelerators.
The Neutron Source Engineering Lab studies the development and advanced use of neutron sources based on nuclear reactors and accelerators.
The lab also studies the behavior of neutrons in nuclear fuel and materials, nuclear reactions and transmutation, and the diagnosis of integrity and the safety assessment of neutron source facilities.
The lab is run by faculty of the Research Reactor Safety Management Engineering field and the Accelerator Applied Engineering field at the Institute for Integrated Radiation and Nuclear Science in Kumatori, Osaka.
Students who wish to conduct research in the Accelerator Applied Engineering field are also admitted through this Neutron Source Engineering field.
Key terms
- Criticality
- A state in which the fission chain reaction in a nuclear reactor continues at exactly a constant rate
- Nuclear data
- Data compiling the probability and type of reaction that neutrons and other particles have with atomic nuclei. It is essential for reactor design
- Terahertz waves
- Electromagnetic waves between radio waves and light, with wavelengths of roughly 0.03 to 3 millimeters
ResearchResearch themes
Using facilities such as the Kyoto University Research Reactor (KUR), an electron linear accelerator, and a circular proton accelerator, the lab studies reactor physics and criticality safety, the measurement of nuclear data, and the generation and application of new particles and light using accelerators.
*Illustrative imageReactor Physics and Criticality Safety
The lab conducts experimental research on reactor physics and criticality safety using the KUR research reactor and critical assembly facilities, research on the nuclear characteristics and safety of next-generation reactors, and research to advance computational methods in reactor physics.
*Illustrative imageMeasuring Neutron-Induced Nuclear Reactions
Using an electron linear accelerator and the research reactor, the lab measures how likely neutrons are to cause nuclear reactions (nuclear reaction cross sections) for minor actinides and long-lived fission products, which are important for next-generation reactors and transmutation.
*Illustrative imageMuons and New Elements from a Storage Ring
This is applied research using a proton and heavy-ion storage ring equipped with an internal target. The lab aims to produce muons for the removal of radioactivity and for muon-catalyzed fusion, and to synthesize elements 119 and 120, which no one has yet made.
*Illustrative imageGenerating Intense Terahertz Light
Using high-energy electron beams from sources such as electron linear accelerators, the lab develops new high-intensity light sources and spectroscopy methods in the millimeter-wave to terahertz range, and studies their application to the optical properties of materials and microscopic imaging spectroscopy.
MembersFaculty
The faculty of the Neutron Source Engineering Lab are Professors, Associate Professors, and Assistant Professors of the Institute for Integrated Radiation and Nuclear Science.
- ProfessorJunichi Hori
- Associate ProfessorYoshihiro Ishi
- Associate ProfessorToshiharu Takahashi
- Associate ProfessorToshihiro Yamamoto
- Assistant ProfessorTomonori Uesugi
- Assistant ProfessorKazushi Terada
- Assistant ProfessorYusuke Urano
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Núcleo del reactor nuclear RA-3, «Ciencia ficción», by Luis Gauna Pereira” Gaunper / CC BY-SA 4.0 (cropped)
- Reactor Physics and Criticality Safety: “View inside the TRIGA research reactor at the Jožef Stefan Institute” Sbaletsk / CC BY 4.0 (cropped)
- Measuring Neutron-Induced Nuclear Reactions: “N TOF experiment” Ordan, Julien Marius / CC BY 4.0 (cropped)
- Muons and New Elements from a Storage Ring: “Aust.-Synchrotron-Interior-Panorama” jjron / CC BY-SA 3.0 (cropped)
- Generating Intense Terahertz Light: “Explosive identification with terahertz waves” Terahertz-applications / CC BY-SA 4.0 (cropped)
- Related lab (中性子応用光学): “Advanced Test Reactor” Argonne National Laboratory / CC BY-SA 2.0 (cropped)
- Related lab (エネルギー変換工学): “Casing of a main circulation pump from the Greifswald Nuclear Power Plant” Siarhei Besarab / CC BY-SA 4.0 (cropped)
- Related lab (推進工学): “Xenon hall thruster” Jet Propulsion Laboratory / Public domain (cropped)
- Related lab (粒子線医学物理学): “Cyclotron patent” Ernest O. Lawrence / Public domain (cropped)
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