title: Recent developments of ion sources for life-science studies at the Heavy Ion Medical Accelerator in Chiba (invited).
abstract: With about 1000-h of relativistic high-energy ion beams provided by Heavy Ion Medical Accelerator in Chiba, about 70 users are performing various biology experiments every year. A rich variety of ion species from hydrogen to xenon ions with a dose rate of several Gy/min is available. Carbon, iron, silicon, helium, neon, argon, hydrogen, and oxygen ions were utilized between 2012 and 2014. Presently, three electron cyclotron resonance ion sources (ECRISs) and one Penning ion source are available. Especially, the two frequency heating techniques have improved the performance of an 18 GHz ECRIS. The results have satisfied most requirements for life-science studies. In addition, this improved performance has realized a feasible solution for similar biology experiments with a hospital-specified accelerator complex.
authors.affiliation: National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kitagawa
authors.affiliation: National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.
authors.forename: A G
authors.initials: AG
authors.lastname: Drentje
authors.affiliation: National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Fujita
authors.affiliation: National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Muramatsu
authors.affiliation: Accelerator Engineering Corporation, Chiba, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Fukushima
authors.affiliation: Accelerator Engineering Corporation, Chiba, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Shiraishi
authors.affiliation: Accelerator Engineering Corporation, Chiba, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.affiliation: Accelerator Engineering Corporation, Chiba, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Takahashi
authors.affiliation: Accelerator Engineering Corporation, Chiba, Japan.
authors.forename: W
authors.initials: W
authors.lastname: Takasugi
authors.affiliation: Institute for Nuclear Research (Atomki), Hungarian Academy of Sciences, Bem tér 18/C, H-4026 Debrecen, Hungary.
authors.forename: S
authors.initials: S
authors.lastname: Biri
authors.affiliation: Institute for Nuclear Research (Atomki), Hungarian Academy of Sciences, Bem tér 18/C, H-4026 Debrecen, Hungary.
authors.forename: R
authors.initials: R
authors.lastname: Rácz
authors.affiliation: Graduate School of Engineering, Osaka University, Osaka, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kato
authors.affiliation: Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Uchida
authors.affiliation: Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Yoshida