量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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A fast,non-destructive beam-profile monitor was developed using an oxygen gas-sheet target in the Heavy Ion Medical Accelerator in Chiba synchrotron.The size of the gas-sheet target was 85 mm in width and 1.3mm in thickness, of which the density was 1E-4 Pa.The base vacuum in the ring was not deteriorated by this gas-sheet target,and was
on the order of 10 8 Pa.In typical cases, carbon ion beams are accelerated from 6 to 290-430 MeV/n for cancer therapy, in which the intensity is 2.5E-8 particles/bunch. For these beams,two-dimensional beam profiles;les were successfully
measured within the time (100 ns)of the bunch separation.This article describes both the technical and physical aspects of the monitor together with some results.
雑誌名
Nuclear Instruments & Methods in Physics Research Section A
Oxygen gas-sheet beam profile monitor for the synchrotron and storage ring
