X‐rays ― Illuminating the unknown
X-rays reveal the world that is invisible to the human eye. This technology, which is widely used in medical and industrial fields, is also essential for cutting-edge scientific research. Here, we introduce some of the research being carried out at the University of Hyogo using the power of X-rays to illuminate the unknown.
Advancing electron accelerators: driving technological progress and social impact
Satoshi Hashimoto
Associate Professor, Laboratory of Advanced Science and Technology for Industry
I am conducting research on generating X-rays and gamma rays using the synchrotron radiation facility “NewSUBARU” of the University of Hyogo. My work focuses on advancing electron accelerator technology and producing high-quality X-rays. We are developing technology that accelerates electrons to speeds near the speed of light to produce powerful synchrotron radiation.
Specifically, I am researching the following three areas. Firstly, the advancement of electron accelerators. By improving accelerator performance and ensuring a stable supply of synchrotron radiation, we help researchers to conduct cutting-edge research using this technology.
Secondly, the development and application of gamma-ray sources. Typically, synchrotron radiation produces up to X-rays; however, we are developing technology to generate higher-energy gamma rays by colliding lasers with electron beams.
Thirdly, the automation of accelerator operations using machine learning. We are automating accelerator tuning, which traditionally relies on the knowledge and experience of operators, through machine learning, aiming for more efficient and more precise operation.
Synchrotron radiation is indispensable in many industrial fields, including semiconductor manufacturing, materials analysis, and battery research. Therefore, at NewSUBARU we not only conduct research but also use the facility as a platform for student education and research, nurturing the next generation of researchers who will lead the future of synchrotron radiation science.
The stable operation of electron accelerators requires advanced technology and precise adjustments. However, as operational techniques evolve, external researchers and industry users will be able to conduct their research more efficiently, which is expected to further invigorate research activities and enhance the potential for developing new technologies and products.
We are committed to advancing synchrotron radiation science and believe that our efforts will accelerate scientific and technological progress, as well as our contributions to society. We will continue our research with this vision in mind.
Expanding Research
The future of magnets opened up by short-wavelength X-rays
Hiroki Wadati
Professor, Graduate School of Science
I am conducting research into the properties of magnets using lasers. I aim to examine the details of magnets on a scale of less than 1 micron and to observe atoms over a short time range of less than picoseconds. In particular, I am working to develop a laser-based technology that can change the orientation of magnets, and am using X-rays to elucidate the underlying mechanism. The X-rays used in experiments to analyze magnets with high precision are generated using a system that I developed in the university laboratory. If I can create a technology to change the orientation of magnets, it could lead to the development and application of new magnets. In addition, if we can develop a technology to generate X-rays with shorter wavelengths, it should contribute to the analysis of magnets, batteries, and other materials. My area of research has been attracting much attention worldwide in recent years. In the future, I aim to develop X-ray technology with shorter wavelengths and carry out research that supports technological innovation in Japan without falling behind global research trends.
X-rays and AI can reduce the burden on doctors, helping them make diagnoses without mistakes
Syoji Kobashi
Professor, Graduate School of Engineering and Advanced Medical Engineering Research Institute
I am studying the application of artificial intelligence to assist in diagnosing diseases based on X-ray and CT images. Currently, radiologists primarily rely on visual assessments to interpret these images, meaning diagnostic accuracy depends heavily on their knowledge and experience. Since human interpretation is not infallible, errors can still occur despite careful examination. By incorporating AI into medical imaging, it is possible to provide more consistent and precise diagnostic support. AI algorithms, for example, can help detect subtle fractures that might otherwise go unnoticed. This technology may also aid in predicting diseases before they become detectable on scans, allowing for earlier intervention and potentially improving patient outcomes. The development of this technology is approximately 80% complete, and feasibility studies are underway. Further validation is needed before it can be widely adopted in clinical practice. Nonetheless, I anticipate that AI-driven diagnostic tools will become a reality within the next few years, ushering in significant advancements in healthcare.
Focus on Person
Tracking minute changes in magnetic force using ultra-short-wavelength light
I am conducting experiments to capture minute changes in the magnetic force of particles called 'spins' using high-order harmonic generation (HHG), which uses ultra-short-wavelength light. By learning more about the movement of spins, it may be possible to use this knowledge to develop computer memory devices and energy-saving electronic devices. It wasn't easy to make fine adjustments to the equipment, such as adjusting the path of the light to the millimeter level; it was a continuous process of trial and error. Still, the joy I felt when I succeeded in generating and observing X-rays from infrared rays for the first time was unforgettable. I would like to continue to pursue the possibilities of light and take on the challenge of developing new technologies.
Tracking minute changes in magnetic force using ultra-short-wavelength light
Yuto Shiokawa
2nd year master's program student, Graduate School of Science
Enhancing gamma-ray intensity: expanding the horizons of synchrotron radiation research
I aim to increase the intensity of high-energy gamma rays produced by Laser Compton Scattering (LCS). LCS gamma rays are a unique light source that can only be generated at a limited number of facilities worldwide, but this research is possible at NewSUBARU. Increasing the intensity will improve experimental efficiency; for example, if the intensity of gamma rays were doubled, the required experimental time would be halved. As the research progresses, it is expected to have applications in radioactive waste management and the medical field. I want to create value for society as a whole by utilizing the experience I have gained through research.
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Enhancing gamma-ray intensity: expanding the horizons of synchrotron radiation research
Haruto Hirakawa
2nd year master's program student, Graduate School of Engineering