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Upgrade of synchrotron operation for scanned carbon-ion therapy at NIRS-HIMAC
https://repo.qst.go.jp/records/71747
https://repo.qst.go.jp/records/717479cbd4652-10ff-449f-bd32-3583b9f54e71
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-06-30 | |||||
| タイトル | ||||||
| タイトル | Upgrade of synchrotron operation for scanned carbon-ion therapy at NIRS-HIMAC | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
Mizushima, Kota
× Mizushima, Kota× Iwata, Yoshiyuki× Furukawa, Takuji× Satou, Shinji× Shirai, Toshiyuki× Noda, Koji× 水島 康太× 岩田 佳之× 古川 卓司× 佐藤 眞二× 白井 敏之× 野田 耕司 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Purpose: In scanned carbon-ion therapy, the narrow beam is required to reduce extra dose to healthy tissue around the target tumor. Since the energy absorbers increase the beam size by the multiple scattering, the accelerator system must output therapy beams with various energies to perform irradiation without using them. In addition, it is also required that the beam properties, such as position, size and spill, are reliable for all energies to ensure irradiation accuracy. Methods: At the Heavy Ion Medical Accelerator in Chiba (HIMAC), multiple-energy operation has been developed to produce the carbon-ion beams with different energies of more than 200 steps between 56 and 430 MeV/u in a single cycle of the synchrotron. By using this operation, the accelerator system can change the output beam energy quickly. We carried out the experiments to verify that the output beams would meet therapy requirements. Results: The beam properties were measured in the treatment room. The beam spot position and size were stable, and the fluctuations of them were small for all experimental conditions. The beam intensity could be controlled as required from the irradiation control system. The ripple of the beam spill was low in the wide intensity range between 107 and 109 particles per second (pps). Conclusions: We confirmed that the accelerator system can provide the beams meeting the therapy requirements for all available energies. We will report the experimental results of our system in our presentation. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The 7th Korea-Japan Joint Meeting on Medical Physics | |||||
| 発表年月日 | ||||||
| 日付 | 2014-09-25 | |||||
| 日付タイプ | Issued | |||||
