A prospect and retrospect - the Japanese case

Area of Science:

• Physics
• Materials Science
• Chemistry

Background:

• Review of the history of synchrotron radiation research in Japan since 1962.
• Initial phase involved parasitic use of an electron synchrotron.
• Development of dedicated soft X-ray sources marked the second generation of research.

Purpose of the Study:

• To review the historical development of synchrotron radiation research in Japan.
• To outline the transition from early efforts to advanced third-generation sources.
• To briefly cover the motivations and developments leading to Spring-8.

Main Methods:

• Historical review of synchrotron radiation facilities and research in Japan.
• Analysis of technological innovations, including insertion devices.
• Examination of the evolution of source concepts from second to third generation.

Main Results:

• The establishment of a dedicated soft X-ray source in 1974 initiated second-generation research.
• The Photon Factory (1982) significantly expanded research areas and introduced innovations.
• Insertion devices drove the concept of third-generation sources for enhanced properties.

Conclusions:

• Japan's synchrotron radiation research has progressed through distinct generations of technology.
• Technological advancements, particularly insertion devices, have been crucial for progress.
• The development of Spring-8 represents the culmination of these advancements in third-generation sources.