High power test of an injector linac for heavy ion cancer therapy facilities
High power test of an injector linac for heavy ion cancer therapy facilities
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DOI：
10.1103/physrevstab.18.111002
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发表时间：
2015-11
影响因子：
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通讯作者：
L. Lu;T. Hattori;Huanyu Zhao;K. Kawasaki;Liangting Sun;Yuan He;Hongwei Zhao
中科院分区：
文献类型：
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作者：
L. Lu;T. Hattori;Huanyu Zhao;K. Kawasaki;Liangting Sun;Yuan He;Hongwei Zhao
混合单腔 (HSC) 直线加速器与单个叉指 H 腔中的射频四极杆和漂移管结构相结合，以高射频功率运行，作为癌症治疗同步加速器的原型注射器。 HSC 采用带有激光离子源的直接等离子体注入方案 (DPIS)。 HSC 的输入束流设计为 20 mA ${\mathrm{C}}^{6+}$ 离子。根据模拟，HSC可以加速6mA的${\mathrm{C}}^{6+}$光束，满足癌症治疗的粒子数要求($1{0}^{8\ensuremath{\sim}9}\text{ }\text{ions}/\text{pulse}$)。带DPIS的HSC注射器使得现有的多回转注射系统和汽提系统不再需要；更重要的是，它还可以缩小现有同步加速器磁体中束管的尺寸，从而降低同步加速器的整体成本。本文报告了 HSC 直线加速器现场测量的详细信息以及高功率测试的结果。
A hybrid single cavity (HSC) linac, combined with radio frequency quadrupole and drift tube structure in a single interdigital-H cavity, operates with high rf power as a prototype injector for cancer therapy synchrotron. The HSC adopts a direct plasma injection scheme (DPIS) with a laser ion source. The input beam current of the HSC is designed to be 20 mA ${\mathrm{C}}^{6+}$ ions. According to simulations, the HSC can accelerate a 6-mA ${\mathrm{C}}^{6+}$ beam which meets the requirement of the particle number for cancer therapy ($1{0}^{8\ensuremath{\sim}9}\text{ }\text{ions}/\text{pulse}$). The HSC injector with DPIS makes the existing multiturn injection system and stripping system unnecessary; what is more, it can also bring down the size of the beam pipe in existing synchrotron magnets, which can reduce the whole cost of the synchrotron. Details of the field measurements of the HSC linac and results of the high power test are reported in this paper.