BNCT02真空设计及仿真  

The Vacuum Design and Simulation of BNCT02

作　　者：刘顺明 曹秀霞[1,2] 李志平 欧阳华甫[1,2] 刘盛进 王鹏程[1,2,3] 刘佳明 关玉慧[1,2] 谭彪 孙晓阳[1,2] 王一刚 朱邦乐[1,2] LIU Shunming;CAO Xiuxia;LI Zhiping;OUYANG Huafu;LIU Shengjin;WANG Pengcheng;LIU Jiaming;GUAN Yuhui;TAN Biao;SUN Xiaoyang;WANG Yigang;ZHU Bangle(Institute of High Energy Physics,Chinese Academy of Sciences(CAS),Beijing 100049,China;Spallation Neutron Source Science Center,Dongguan 523808,China;University of Science and Technology of China,Hefei 230029,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]散裂中子源科学中心,东莞523808 [3]中国科学技术大学,合肥230029

出　　处：《真空科学与技术学报》2024年第10期871-877,共7页Chinese Journal of Vacuum Science and Technology

基　　金：国家自然科学基金面上项目(11875271)。

摘　　要：BNCT02由两套加速器和5个治疗端组成,可实现2组癌症患者同时治疗。目前开工建设的是其中一套装置,由一台ECR离子源,一条低能传输线(LEBT),一台2.8 MeV射频四极加速器(RFQ),两条高能传输线(HEBT)、两个治疗端和一条临时调束线组成。文章首先介绍了BNCT02真空设计,利用Molflow软件计算了RFQ及HEBT不同状态下的压力分布,并与实测情况进行比对。然后,对HEBT区段异型真空盒形变、水冷真空盒温升进行模拟计算,并优化对应真空盒设计。目前整个装置已经稳定运行,真空系统满足设计要求。BNCT02 consists of two sets of accelerators and five treatment terminals,enabling simultaneous treatment of two groups of cancer patients.Currently under construction is one of the units,consisting of an ECR ion source,a low energy beam transport(LEBT)line,a 2.8 MeV radio frequency quadrupole accelerator(RFQ),two high energy beam transport(HEBT)lines,two treatment terminals,and a temporary line with beam dump.Firstly,the vacuum design of BNCT02 is introduced.The pressure distribution of RFQ and HEBT under different states is simulated and calculated by using Molflow software,and compared with the measured results.Then,the deformation and temperature rise of the irregular chamber and the water-cooled chamber in HEBT are simulated,and the chamber design is optimized.Currently,the entire device is running stably,and the vacuum system meets the design requirements.

关 键 词：硼中子俘获治疗 真空系统设计 压力分布 异型真空盒设计 形变 温升 

分 类 号：TN107[电子电信—物理电子学] TN104