Fukuda, M.

Paper	Title	Page
THZH102	Use of Microbeam at JAEA Takasaki	588
	M. Fukuda, K. Hatanaka, T. Yorita RCNP, Osaka T. Kamiya, H. Kashiwagi, S. Kurashima, N. Miyawaki, M. Oikawa, S. Okumura, T. Sakai, T. Satoh, W. Yokota JAEA/ARTC, Takasaki
	The TIARA(Takasaki Ion accelerators for Advanced Radiation Technology) facility of JAEA in Takasaki is equipped with two several-MeV-ion microbeam systems of beam focusing type and one several-hundred-MeV-heavy-ion microbeam system of beam collimating type. The microbeams with a spot size of one micrometer or less in diameter are extensively utilized for the research in materials science and biotechnology. An in-air micro-PIXE analysis system using a few-MeV proton microbeam is quite useful for medical science and dentistry to visualize two-dimensional distribution of very small quantities of elements in a microscopic area like cells with very high sensitivity. A single-ion hit system using a several-hundred-MeV heavy ion microbeam is available for medical and biological applications such as elucidations of cellular radiation response. Highly stable ion beams with energy spread less than 0.02 % are required for production of the microbeams. Improvements of accelerator performance are indispensable to realize the ion beams of high quality. A flattop acceleration system and a magnetic field stabilization system have been developed for the JAEA AVF cyclotron.
	Slides