The compact electron cyclotron resonance ion source KeiGM for the carbon ion therapy facility at Gunma University.
A high-energy carbon-ion radiotherapy facility is under construction at Gunma University Heavy Ion Medical Centre (GHMC). Its design was based on a study of the heavy ion radiotherapy at the National Institute of Radiological Sciences (NIRS) in order to reduce the size and construction cost of the facility. A compact electron cyclotron resonance ion source (ECRIS) for Gunma University, called KeiGM, was installed in 2008. It is almost a copy of the prototype ECRIS Kei2 which was developed by NIRS; meanwhile this prototype produced over 1 e mA of C(4+) using C(2)H(2) gas (660 W and 40 kV). The beam intensity of C(4+) was 600 e microA with CH(4) gas (250 W and 30 kV). The beam intensity satisfies the required value of 300 e microA.
Muramatsu
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M
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan. m_mura@nirs.go.jp
Kitagawa
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A
Drentje
A G
AG
Hojo
S
S
Ueda
T
T
Miyazaki
H
H
Yusa
K
K
Tashiro
M
M
Torikai
K
K
Sakama
M
M
Kanai
T
T
Yamada
S
S
D000046:Academic Medical Centers; D002244:Carbon; D017357:Cyclotrons; D004583:Electrons; D005740:Gases / Q000737:chemistry; D007564:Japan; D008697:Methane / Q000737:chemistry; D008872:Microwaves; D011878:Radiotherapy / Q000295:instrumentation* / Q000379:methods
D005740:Gases; D002244:Carbon; D008697:Methane