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Beam commissioning of a superconducting rotating-gantry for carbon-ion radiotherapy
https://repo.qst.go.jp/records/47635
https://repo.qst.go.jp/records/47635ee3db8db-e401-4cdc-93a1-edef3c8d0cc8
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-02-08 | |||||
| タイトル | ||||||
| タイトル | Beam commissioning of a superconducting rotating-gantry for carbon-ion radiotherapy | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
岩田, 佳之
× 岩田, 佳之× 藤本哲也× 松葉, 俊哉× 藤田, 敬× 佐藤, 眞二× 古川, 卓司× 原, 洋介× 水島, 康太× 皿谷, 有一× 丹正, 亮平× 早乙女, 直也× 白井, 敏之× 野田, 耕司× 岩田 佳之× 松葉 俊哉× 藤田 敬× 佐藤 眞二× 古川 卓司× 原 洋介× 水島 康太× 皿谷 有一× 丹正 亮平× 早乙女 直也× 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 | A superconducting rotating-gantry for carbon-ion radiotherapy was developed. This isocentric gantry can transport carbon ions having kinetic energies of between E=430-48 MeV/u to an isocenter over an angle of ±180 degrees, and is further capable of performing three-dimensional raster-scanning irradiation. Construction of the entire rotating-gantry system was completed by the end of September 2015. Prior to beam commissioning, phase-space distributions of extracted carbon beams from the synchrotron were deduced by using an empirical method. In this method, phase-space distributions at the extraction channel of the synchrotron were modeled with 8 parameters, and the best parameters were determined so as to minimize a difference between the calculated and measured beam profiles by using a simplex method. Based on the phase-space distributions, beam optics through the beam-transport lines as well as the rotating gantry were designed. Since horizontal and vertical beam emittances, as extracted slowly from the synchrotron, generally differ with each other, a horizontal-vertical beam coupling would occur when the gantry rotates. Thus, the size and shape of beam spots at the isocenter should vary depending on the gantry angle. To compensate for the difference in the emittances, we employed a method to utilize multiple Coulomb scattering of the beam particles by a thin scatterer. Having compensated for the emittances and designed beam optics through the rotating gantry, beam commissioning over various combinations of gantry angles and beam energies was performed. By finely tuning the superconducting quadrupoles of the rotating gantry, we could successfully obtain the designed beam quality, which satisfies the requirements of scanning irradiation. | |||||
| 書誌情報 |
Nuclear Instruments and Methods in Physics Research A 巻 834, p. 71-80, 発行日 2016-10 |
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| 出版者 | ||||||
| 出版者 | Elsevier Science | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-9002 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.nima.2016.07.050 | |||||
