title: Ion source and injection line for high intensity medical cyclotron.
abstract: A 14 MeV high intensity compact cyclotron, CYCIAE-14, was built at China Institute of Atomic Energy (CIAE). An injection system based on the external H- ion source was used on CYCIAE-14 so as to provide high intensity beam, while most positron emission tomography cyclotrons adopt internal ion source. A beam intensity of 100 μA/14 MeV was extracted from the cyclotron with a small multi-cusp H- ion source (CIAE-CH-I type) and a short injection line, which the H- ion source of 3 mA/25 keV H- beam with emittance of 0.3π mm mrad and the injection line of with only 1.2 m from the extraction of ion source to the medial plane of the cyclotron. To increase the extracted beam intensity of the cyclotron, a new ion source (CIAE-CH-II type) of 9.1 mA was used, with maximum of 500 μA was achieved from the cyclotron. The design and test results of the ion source and injection line optimized for high intensity acceleration will be given in this paper.
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: XianLu
authors.initials: X
authors.lastname: Jia
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: Fengping
authors.initials: F
authors.lastname: Guan
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: Hongjuan
authors.initials: H
authors.lastname: Yao
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: TianJue
authors.initials: T
authors.lastname: Zhang
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yang
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: Guofang
authors.initials: G
authors.lastname: Song
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Ge
authors.affiliation: China Institute of Atomic Energy, Beijing, China.
authors.forename: Jiuchang
authors.initials: J
authors.lastname: Qin
mesh_terms: D017357:Cyclotrons / Q000295:instrumentation*; D004867:Equipment Design; D006859:Hydrogen; D007267:Injections
chemical_list: D006859:Hydrogen