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  • Title: The compact electron cyclotron resonance ion source KeiGM for the carbon ion therapy facility at Gunma University.
    Author: Muramatsu M, Kitagawa A, Drentje AG, Hojo S, Ueda T, Miyazaki H, Yusa K, Tashiro M, Torikai K, Sakama M, Kanai T, Yamada S.
    Journal: Rev Sci Instrum; 2010 Feb; 81(2):02A327. PubMed ID: 20192348.
    Abstract:
    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.
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