Operation status of the electron cyclotron resonance ion source at Gunma University.
Operation status of the electron cyclotron resonance ion source at Gunma University.
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群马大学电子回旋共振离子源的运行状况。
DOI：
10.1063/1.4833922
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Y. Kano
中科院分区：
文献类型：
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作者：
H. Souda;S. Yamada;T. Kanai;E. Takeshita;M. Muramatsu;A. Kitagawa;M. Kanazawa;H. Izumiya;Y. Kano
群马大学重离子医学中心的ECR离子源，即所谓的KeiGM [M.村松A. Kitagawa，Y. Sakamoto，S.佐藤，澳-地佐藤，H。Ogawa，S. Yamada，H. Ogawa，Y. Yoshida和A. G. Drentje，Rev.仪器76，113304（2005）]，自2010年以来已经被操作用于癌症治疗和物理/生物实验。KeiGM通常从CH 4气体中产生230 μA的10 keV/u C（4+）离子。真空度控制在1.2 × 10（-4）~ 1.7 × 10（-4）Pa，脉冲间电流波动控制在± 10%以内。每6-8个月清洗一次引出电极，以去除沉积的碳，这会增加泄漏电流和放电。为了研究在没有此类维护的情况下长期运行的可能性，已在试验台上测试了用于清洁萃取电极的氧老化。日本国立放射线科学研究所和东津市佐贺重离子医疗加速器（SAGA-HIMAT）的相同设计的离子源也以稳定的C（4+）电流运行，适用于癌症治疗的连续运行。
An ECR ion source of Gunma University Heavy Ion Medical Center, so-called KeiGM [M. Muramatsu, A. Kitagawa, Y. Sakamoto, S. Sato, Y. Sato, H. Ogawa, S. Yamada, H. Ogawa, Y. Yoshida, and A. G. Drentje, Rev. Sci. Instrum. 76, 113304 (2005)], has been operated for cancer therapy and physical/biological experiment since 2010. KeiGM produces typically 230 μA of 10 keV/u C(4+) ions from CH4 gases. The vacuum pressure is kept between 1.2 × 10(-4) and 1.7 × 10(-4) Pa so as to suppress the pulse-to-pulse current fluctuation within ±10%. The extraction electrode is cleaned every 6-8 months in order to remove deposited carbon, which increases the leak current and discharge. In order to investigate the possibility of long-term operation without such maintenances, oxygen aging for the cleaning of the extraction electrode has been tested in the test bench. The same-designed ion sources at National Institute of Radiological Sciences and SAGA Heavy Ion Medical Accelerator in Tosu (SAGA-HIMAT) are also operated with stable C(4+) current, which are suitable for the continuous operation for cancer therapy.
紧凑型碳离子医疗加速器的可靠性
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
H. Souda;K. Yusa;M. Tashiro;H. Shimada;A. Matsumura;Y. Kubota;E. Takeshita;S. Yamada;T. Kanai;M. Torikoshi
通讯作者：
M. Torikoshi