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Beam stability improvement of the HIMAC synchrotron using a feed-forward system for magnet power supplies
https://repo.qst.go.jp/records/46298
https://repo.qst.go.jp/records/462984c6d56d6-280a-4912-8e27-589470787dcf
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-04-20 | |||||
| タイトル | ||||||
| タイトル | Beam stability improvement of the HIMAC synchrotron using a feed-forward system for magnet power supplies | |||||
| 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 |
Katagiri, Ken
× Katagiri, Ken× Furukawa, Takuji× Mizushima, Kota× Uchiyama, Hiroshi× Takeshita, Eri× Himukai, Takeshi× Satou, Shinji× Iwata, Yoshiyuki× Shirai, Toshiyuki× Noda, Kouji× 片桐 健× 古川 卓司× 水島 康太× 竹下 英里× 日向 猛× 佐藤 眞二× 岩田 佳之× 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 | In order to realize a precise dose distribution in heavy-ion cancer therapy, high beam stability is required for the accelerator complex. Owing to load fluctuation caused by the upper ring, which is one of the two rings in HIMAC, current dips of 5-10 Hz were observed in the power supply for the bending/quadrupole magnet of the other lower ring. The parameters of the beam stability, such as the spill variation, the beam position, and the size, were adversely affected by the current dips. In order to suppress these current dips, we developed a new feed-forward system in the magnet power supply. We verified the performance of the feed-forward system by measuring the suppression of the current dips. We also performed beam experiments to measure the variation of the horizontal tune and the structure of the beam spill, which is slowly extracted by the resonance method. The experimental result showed that the current dips were successfully reduced by the system to DI/I =1E-6. It was also confirmed that the horizontal tune and the spill structure could be stabilized by the current dip suppression. |
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| 書誌情報 |
Nuclear Instruments & Methods in Physics Research Section B 巻 269, 号 24, p. 2905-2910, 発行日 2011-04 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-583X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.nimb.2011.04.030 | |||||
