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Production of various ion species by gas pulsing technique for multi ion irradiation at NIRS-HEC ion source
https://repo.qst.go.jp/records/75603
https://repo.qst.go.jp/records/756036320132d-8c27-48bf-b5d0-d1f626a0d3bc
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-04-15 | |||||
| タイトル | ||||||
| タイトル | Production of various ion species by gas pulsing technique for multi ion irradiation at NIRS-HEC ion source | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Muramatsu, Masayuki
× Muramatsu, Masayuki× Kitagawa, Atsushi× Inaniwa, Taku× Iwata, Yoshiyuki× Mizushima, Kota× Muramatsu, Masayuki× Kitagawa, Atsushi× Inaniwa, Taku× Iwata, Yoshiyuki× Mizushima, Kota |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | High-energy carbon-ion radiotherapy is being carried out at Heavy Ion Medical Accelerator in Chiba (HIMAC). Over 11000 cancer patients have been treated with carbon beams having energies of between 56-430 MeV/u since 1994. At present, multi-ion irradiation method by various ion species is being studied for optimization of LET and dose distribution. An ion source has to produce the helium, carbon, oxygen and neon at pulse by pulse for this method. Requirement currents for He2+, C2+, O3+ and Ne4+ are 500, 150, 230 and 300 eA, respectively. We obtained beam current of 482, 151, and 270 eA for He2+, C2+ and O3+ with mixed helium and CO2 gases under the extraction voltage of 27 kV. Beam current of 27 and 15 eA for C5+ and O7+ ions were also obtained in this time. He2+ beam include full striped ion such as C6+, N7+ and O8+. We have to increase the purity of He2+ beam. The gas feed system was modified for making pulsed gas by using a solenoid valve for switching different gas. | |||||
| 書誌情報 |
Proceedings of 23rd International workshop on ECR ion sources (ECRIS2018) p. 79-81, 発行日 2019-02 |
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| ISBN | ||||||
| 識別子タイプ | ISBN | |||||
| 関連識別子 | ISBN 978-3-95450-196-0 | |||||
