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Quantum Beam Physics and Measurement Lab
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A lab that studies radiation measurement and nuclear reactions.
AboutAbout the lab
Technology for measuring radiation, and investigating nuclear reactions
The Quantum Beam Physics and Measurement Lab works on radiation measurement technology and research on nuclear reactions.
It studies methods such as dose evaluation during radiation therapy and radiation measurement during the decommissioning of nuclear reactor facilities.
The lab also develops detectors that operate at extremely low temperatures and detect gamma rays and X-rays with excellent energy resolution and position resolution.
Key terms
- Dose evaluation
- Estimating the amount of energy that radiation deposits in the human body or in materials.
- Energy resolution
- A measure of how finely a detector can distinguish between radiations of similar energies.
- Cross section
- A quantity that expresses how likely a given reaction is to occur when a particle strikes a nucleus.
ResearchResearch themes
The lab works on radiation measurement technology and research on nuclear reactions. Main research themes include developing methods for dose evaluation during radiation therapy, neutron measurement related to boron neutron capture therapy, and radiation measurement during the decommissioning of nuclear reactor facilities.
*Illustrative imageRadiation Detectors Operating at Extremely Low Temperatures
The lab develops detectors that operate at extremely low temperatures and detect gamma rays and X-rays with excellent energy resolution and position resolution. Through the development of superconducting microcalorimeters, it aims for measurement with high energy resolution.
*Illustrative imageMeasuring Neutrons Produced by Particle Reactions
The lab measures neutron production cross sections when continuous-energy neutrons or heavy ions strike a target, and neutron yields when deuterons strike a target. Measurements of nuclear reaction cross sections are used in the radiation safety design of accelerator facilities.
MembersFaculty
The members of the Quantum Beam Physics and Measurement Lab consist of faculty members and doctoral, master's, and undergraduate students.As of 2026
- ProfessorKenichi Watanabe
- Associate ProfessorNaoko Iyomoto
- Assistant ProfessorNobuhiro Shigyo
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: “Radiation Assessment Detector for Mars Science Laboratory” NASA/JPL-Caltech/SwRI / Public domain (cropped)
- Radiation Detectors Operating at Extremely Low Temperatures: “Frosted cryostat of a High-Purity Germanium (HPGe) detector” Bibric02 / CC0 (cropped)
- Measuring Neutrons Produced by Particle Reactions: “Neutron Detector ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (応用原子核物理・電磁解析研究室): “MichiganFFAGmark1” Lawrence W. Jones / CC BY-SA 3.0 us (cropped)
- Related lab (量子線物性工学研究室): “JEOL JEM-200A transmission electron microscope -05” High Contrast / CC BY 3.0 de (cropped)
- Related lab (原子力エネルギーシステム研究室): “HFIR Refueling July )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Related lab (超顕微解析研究センター
（山本 知一） ): “Nanocubs” Julia Glazkova / CC BY 4.0 (cropped)
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