Kitagawa, A.

Paper	Title	Page
MOCO-C01	The Bio-Nano-ECRIS Project: A New ECR Ion Source at Toyo University to Produce Endohedral Fullerenes	27
	T. Uchida, H. Minezaki, Y. Yoshida Toyo University, Kawagoe-shi, Saitama T. Asaji, K. Tanaka Tateyama Machine Co. Ltd., Toyama-shi S. Biri ATOMKI, Debrecen Y. Kato Osaka University, Suita A. Kitagawa, M. Muramatsu NIRS, Chiba-shi
	We are developing a new ECRIS for the synthesis of endohedral fullerenes, which have potential in medical care, biotechnology, and nanotechnology. So this ion source is temporarily called Bio-Nano ECRIS. Iron-encapsulated fullerene can be applied as a contrast material for magnetic resonance imaging. Thus, we aim the production of Fe@Cnn using the Bio-Nano ECRIS. It has been reported that ions of fullerenes and carbons-loss fullerenes, such as (C60)+, (C58)+, …, are easily produced in ECRISs. Such carbons-loss fullerenes might have an advantage for the mass production of endohedral metallofullerenes because of their less stability. The Bio-Nano ECRIS is designed for the mass production of endohedral fullerenes. A fullerenes sublimation oven and a large-diameter (φ=140mm) chamber are equipped. In a second phase an iron oven will be also installed to make iron-fullerene plasma. In this paper, the recent results will be presented; i) a design concept of the Bio-Nano ECRIS, ii) a preliminary study on the production of fullerene ions and carbons-loss fullerenes with the assistance of base gas plasmas, iii) interactions between the fullerenes plasma and the base gas plasma.
	Slides
MOPO-12	Production of Multi-Charged Ions for Experimental Use at HIMAC	92
	A. Kitagawa, M. Muramatsu NIRS, Chiba-shi S. Biri ATOMKI, Debrecen A. G. Drentje KVI, Groningen W. Takasugi, M. Wakaisami AEC, Chiba
	Since 1994, heavy-ion radiotherapy using carbon ions is successfully carried out with the Heavy Ion Medical Accelerator in Chiba (HIMAC) at the National Institute of Radiological Sciences (NIRS). The maximum carbon ion energy is 400MeV/n. HIMAC is dedicated to radiotherapy, but it has as a second essential task to operate as users facility. In that scope it accelerates - during evening, night and weekend- many various ion species for basic experiments in biomedical science, physics, chemistry, material science, and so on. In order to serve all HIMAC users at best, the extension of the range of ion species is an important subject in ion source development at HIMAC. A PIG ion source mainly covers lighter ions from solid materials, while the 18GHz ECR ion source (called NIRS-HEC) is producing the heavier ions. Several developments on NIRS-HEC are now in progress. Various compounds are employed for the production of metallic ions by the MIVOC technique. In order to increase the beam intensity for heavier ions, additional microwave power is applied at a lower frequency by a traveling wave tube amplifier. Results of recent developments are reported.