介质壁加速器关键技术  

Technologies of Dielectric Wall Accelerator

作　　者：章林文[1] 夏连胜[1] 谌怡[1] 王卫[1] 刘毅[1] 张篁[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,脉冲功率科学与技术重点实验室,绵阳621900

出　　处：《高电压技术》2015年第6期1769-1775,共7页High Voltage Engineering

基　　金：国家自然科学基金(11035004;51407169);中国工程物理院科学技术发展基金项目(2013A0402018);中国科学院无机功能材料与器件重点实验室开放课题(KLIFMD-2014-01)~~

摘　　要：质子放射用于放射肿瘤治疗有良好效果,需要用到质子加速器。介质壁加速器(DWA)是一种基于固态脉冲形成线、光导开关和绝缘介质壁等关键技术为一体的新概念直线加速器,可用于质子肿瘤治疗。为此,介绍了研发新型医疗加速器的必要和介质壁加速器用于肿瘤治疗的优势:质子用于肿瘤治疗时,有明确的射程,可以使辐射剂量主要沉淀在肿瘤区域,提高治疗效果,降低对非肿瘤区正常组织的伤害;介质壁加速器加速梯度最高可达100 MV/m,可以有效实现加速器的小型化、紧凑化,降低建造以及运行维护成本。此外,重点介绍了中国工程物理研究院流体物理研究所在介质壁加速器关键技术研究所取得的进展,包括固态脉冲形成线技术,高梯度绝缘介质壁技术,光导开关及其触发技术,以及一种300 k V的脉冲功率源等。Proton cancer therapy is promising among radioactive cancer treatments; it requires proton accelerators. Di- electric wall accelerator （DWA）, based on solid-state pulse forming lines, photoconductive semiconductor switches and high gradient insulators, is a novel linear accelerator that could be used for proton cancer therapies. We described the ne- cessity of developing novel medical accelerators and the advantages of using DWA for cancer treatments. When using accelerated proton to treat cancers, it has a clear range, i.e. the radiation dose mainly stays within the cancer areas, and this enhances the treatment effect while reducing the damage to healthy tissues. DWA＇s accelerating gradient is up to 100 MV/m, which enables accelerators to become more miniaturized, more compact, with lower costs of construction, opera- tion and maintenance. Besides, we demonstrated the development of some key issues for DWA obtained by Institute of Fluid Physics, CAEP, including solid-state pulse forming lines, high gradient insulators, photoconductive semiconductor switches, and a 300 kV pulsed power supply.

关 键 词：介质壁加速器 质子 肿瘤治疗 固态脉冲形成线 高梯度绝缘子 光导开关 

分 类 号：R730.55[医药卫生—肿瘤] O572.211[医药卫生—临床医学]