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Nuclear Measurement Engineering Lab
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A lab that produces and measures neutrons and applies them to medicine and energy.
AboutAbout the lab
Turning radiation, so often cast as the villain, into a useful tool
The Yoshihashi Lab focuses on neutrons, one type of radiation, and conducts research to apply them in medicine and energy.
To make effective use of radiation, which is often cast as the villain, the lab approaches the subject from many angles.
Its research rests on three pillars: producing neutrons, measuring neutrons, and examining the effects of neutrons.
The lab houses NUANS, an accelerator-based neutron source for BNCT, a cancer treatment.
Key terms
- Neutron
- One of the particles that make up an atomic nucleus. It has no electric charge and passes easily through matter
- BNCT
- Boron neutron capture therapy. A cancer treatment in which neutrons are directed at boron taken up by cancer cells to destroy them
- Accelerator
- A device that makes particles move fast using electric force. Neutrons can be produced by directing fast particles at a target
NewsLab news
A Project Professor published a paper on joint research with QST Rokkasho in Nuclear Fusion
A Project Professor published a paper on joint research with the ITER Organization in Nuclear Fusion
A Project Assistant Professor published a paper in JINST on benchmark experiments conducted jointly with BNL
A Project Professor published a paper in Nuclear Fusion on measuring photoneutrons at JT-60SA, in joint research with QST Naka
ResearchResearch themes
To make effective use of radiation, which is often cast as the villain, the lab focuses in particular on neutrons and aims to apply them in medicine and energy. Its research rests on three pillars: developing neutron sources, developing neutron measurement technology, and evaluating biological effects.
*Illustrative imageDeveloping devices that produce neutrons
The lab works on developing devices that produce neutrons with accelerators. In addition to using its own BNCT accelerator, NUANS, for basic research, it also addresses applications to animal treatment (veterinary medicine) and the development of neutron sources for fusion.
*Illustrative imageTechnology for measuring neutrons
Neutron measurement is the foundation of every neutron-related technology. The lab develops advanced measurement devices and methods for using them, and applies them to BNCT, to fusion experimental devices such as JT-60SA, and to neutron measurement at the Fukushima Daiichi Nuclear Power Plant.
*Illustrative imageThe effects of neutrons on cells
By observing how cells respond when irradiated with neutrons, the lab applies its work to life sciences. It images the colonies formed by cells that survive after irradiation, and uses them to study how cells are killed in BNCT.
MembersFaculty
The Yoshihashi Lab consists of faculty members and doctoral, master's, and undergraduate students.As of 2026
- ProfessorSachiko Yoshihashi
- Assistant ProfessorYasuyuki Ogino
- Project ProfessorTakeo Nishitani
- Project Assistant ProfessorYu Fujiwara
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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: “Experiment using an electronic neutron generator” Idaho National Laboratory / CC BY 2.0 (cropped)
- Developing devices that produce neutrons: “CLEAR facility overview” Gedivad / CC BY-SA 4.0 (cropped)
- Technology for measuring neutrons: “M-42 radiation detector” DLR / CC BY 3.0 de (cropped)
- The effects of neutrons on cells: “Inverted Microscope” Zephyris at English Wikipedia / CC BY-SA 3.0 (cropped)
- Related lab (Energy and Resource Circulation Science Lab): “Chemistry Laboratory - Bench” Jean-Pierre from Cosne-Cours-sur-Loire (Nièvre, Burgundy region), France / CC BY-SA 2.0 (cropped)
- Related lab (Fusion Plasma Science and Engineering Lab): “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Related lab (Energy Functional Materials Engineering Lab): “Thin film growth defect” Evavilova / CC BY-SA 4.0 (cropped)
- Related lab (Quantum Beam Imaging Engineering Lab): “Radiacode 102” Mykhal / CC0 (cropped)
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