Design study of compact medical fixed-field alternating-gradient accelerators
Design study of compact medical fixed-field alternating-gradient accelerators
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DOI：
10.1103/physrevstab.7.094701
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发表时间：
2004-09
影响因子：
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通讯作者：
T. Misu;Y. Iwata;A. Sugiura;S. Hojo;N. Miyahara;M. Kanazawa;T. Murakami;S. Yamada
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文献类型：
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作者：
T. Misu;Y. Iwata;A. Sugiura;S. Hojo;N. Miyahara;M. Kanazawa;T. Murakami;S. Yamada
094701-1我们研究了实现紧凑型固定场交变梯度（FFAG）加速器的各种条件和限制，以广泛用于重离子癌症治疗。对于一个normalconducting的FFAG加速器的情况下，我们的线性计算表明，12细胞的径向扇区与场指数为10.5作为一个合适的配置。我们发现，它的环周长可以小到70米，需要三重级联环加速碳束从40 keV=u到400 MeV=u。在本文中，我们报告了一个系统的分析的基础上的线性光学模型，各种类型的FFAG的比较，并与一些技术问题的设计实例。一个重要的结果是，可行的径向扇形设计是可能的圆周系数C显着低于值4.45以前引用。
094701-1 We have studied the various conditions and limitations for achieving compact fixed-field alternatinggradient (FFAG) accelerators to be widely used in heavy-ion cancer therapy. For the case of a normalconducting FFAG accelerator, our linear calculation indicates 12-cell radial sectors with a field index of 10.5 as a suitable configuration. We found that its ring circumference can be as small as 70 m and that triple-cascade rings are needed to accelerate a carbon beam from 40 keV=u to 400 MeV=u. In this paper, we report a systematic analysis based on a linear optical model, a comparison of various types of FFAG, and a design example with some technical concerns. An important result is that viable radialsector designs are possible with circumference factor C significantly lower than the value 4.45 previously quoted.